{"version":"2.1","snapshot":{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","schemaVersion":4,"classificationVersion":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","shardCount":4},"schema":"https://wellficent.com/api/v1/wells/schema","total":61660,"distinctSourceWellIds":52403,"page":1507,"pageSize":40,"next_url":"https://wellficent.com/api/v1/wells?page=1508&sector=oil-gas","catalogues":[{"reuseLicense":"review-source-terms","commercialUseAllowed":null,"attribution":"Contains information licenced under the BC Energy Regulator Open Data Licence. Normalized by Wellficent.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":5497,"sourceRows":34425,"termsUrl":"https://www.bc-er.ca/files/gis/BCER-Open-Data-Licence.pdf","id":"canada-bcer","name":"BC Energy Regulator — Public well surface holes","source":"https://data-bc-er.opendata.arcgis.com/datasets/657b609ee3314adf91da5ab86d42cda7_0/explore","checkedAt":"2026-10-02","importedAt":"2026-10-02T23:47:28+00:00","sourceCrs":"OGC:CRS84 (official export; native CRS not supplied)","coordinateMethod":"official-ArcGIS-Hub-export-spatialRefId-4326","currentStatusVerified":false,"exclusions":{"confidential-or-unspecified":5497},"sourceSha256":"ba2173fc6a1b874c38334ae8f0d3dd97394c456fe80c5d6ea97eeb339c4b8d25","recordCount":28928,"distinctSourceWellIds":28928,"bounds":[-132.9747684,48.6219577,-114.1909838,59.9963609]},{"reuseLicense":"review-source-terms","commercialUseAllowed":null,"attribution":null,"sourceAsOf":"2020-07-06","positionAccuracy":null,"excludedRows":0,"sourceRows":609,"termsUrl":null,"id":"israel-petroleum-2020","name":"Index of Oil and Gas Wells in Israel","source":"https://www.energy-sea.gov.il/media/bwndxpjq/wells-from-prime_web.pdf","checkedAt":"2026-10-02","importedAt":"2026-10-02T22:36:29+00:00","sourceCrs":"EPSG:4326","coordinateMethod":"source-wgs84","currentStatusVerified":false,"sourceSha256":"ef17c8413a8e649e801822955079829e79b7ebc15d402d8f366bbd7eaa812034","sourceOrdinalGaps":[48,405,483,595,596],"recordCount":609,"distinctSourceWellIds":548,"bounds":[33.341657,29.897388,35.8009,33.258788]},{"reuseLicense":"review-source-terms","commercialUseAllowed":null,"attribution":"Source: NLOG / TNO Geological Survey of the Netherlands. Administrative data normalized by Wellficent.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":979,"sourceRows":6737,"termsUrl":"https://www.nlog.nl/en/disclaimer","id":"netherlands-nlog","name":"TNO / NLOG — Netherlands boreholes","source":"https://www.nlog.nl/en/boreholes","checkedAt":"2026-10-02","importedAt":"2026-10-02T23:47:28+00:00","sourceCrs":"EPSG:23031 (ED50 / UTM zone 31N)","coordinateMethod":"provider-transformed-to-wgs84","currentStatusVerified":false,"exclusions":{"outside-hydrocarbon-geothermal-scope":979},"sourceSha256":"93396847699c48d2a0bd5997acb7a1c898d5563cc05446d2a89978c638400a13","recordCount":5758,"distinctSourceWellIds":5758,"bounds":[2.816751,50.7586575,7.1811304,55.6810259]},{"reuseLicense":"review-source-terms","commercialUseAllowed":null,"attribution":"© Crown Copyright, New Zealand Petroleum & Minerals. Public well data reproduced with permission; normalized by Wellficent.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":57,"sourceRows":1267,"termsUrl":"https://www.nzpam.govt.nz/about/copyright","id":"new-zealand-nzpam","name":"NZ Petroleum & Minerals — Public petroleum wells","source":"https://services3.arcgis.com/fp1tibNcN9mbExhG/ArcGIS/rest/services/Petroleum_and_minerals/FeatureServer/18","checkedAt":"2026-10-02","importedAt":"2026-10-02T23:47:28+00:00","sourceCrs":"EPSG:2193 / source coordinate field WGS84","coordinateMethod":"provider-transformed-to-wgs84","currentStatusVerified":false,"exclusions":{"not-explicitly-public":57},"sourceSha256":"0bef0448c41122a4e50c4c93c4177ac287bdf0d7340fb18076b0c4a52e0c5fdf","recordCount":1210,"distinctSourceWellIds":1210,"bounds":[167.1531861,-47.4445487,178.4618819,-35.1051235]},{"reuseLicense":"review-source-terms","commercialUseAllowed":null,"attribution":"Norwegian Offshore Directorate (NOD/SODIR), NLOD 2.0. Normalized by Wellficent.","sourceAsOf":null,"positionAccuracy":"NOD general disclaimer: approximately ±0–300 m unless otherwise stated; not for navigation.","excludedRows":64,"sourceRows":9845,"termsUrl":"https://data.norge.no/nlod/en/2.0","id":"norway-sodir","name":"Norwegian Offshore Directorate — Wellbores","source":"https://factmaps.sodir.no/api/rest/services/DataService/Data/FeatureServer/5000","checkedAt":"2026-10-02","importedAt":"2026-10-02T23:47:28+00:00","sourceCrs":"ED50 / service geometry EPSG:4326","coordinateMethod":"provider-transformed-to-wgs84","currentStatusVerified":false,"exclusions":{"missing-coordinates":64},"sourceSha256":"e649556d781967fd50faf3689b5fc16ec87d602d3ae18bae2e6d482e733fd172","recordCount":9781,"distinctSourceWellIds":6024,"bounds":[-8.6995307,56.1249206,35.8371879,80.6831871]},{"reuseLicense":"unconfirmed","commercialUseAllowed":null,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":13383,"termsUrl":null,"id":"uk-nsta-offshore","name":"NSTA — UK offshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","sourceRetrievedAt":"2026-10-02T23:32:49+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseNote":"ArcGIS item metadata does not specify a reuse licence; public access alone is not a licence.","recordCount":13383,"distinctSourceWellIds":8295,"bounds":[-9.8454471,48.5244231,3.35291,62.6562819]},{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062]}],"companies":[{"name":"Nederlandse Aardolie Maatschappij B.V.","role":"reported-owner","records":3116},{"name":"Nederlandse Aardolie Maatschappij B.V.","role":"original-operator","records":2030},{"name":"NAM","role":"original-operator","records":1347},{"name":"Statoil Petroleum AS","role":"drilling-operator","records":1180},{"name":"Nederlandse Aardolie Maatschappij B.V.","role":"drilling-contractor","records":1132},{"name":"Equinor Energy AS","role":"drilling-operator","records":1098},{"name":"NEO NEXT + ENERGY RESOURCES UK LIMITED","role":"responsible-wellbore-operator","records":1062},{"name":"NEO NEXT + ENERGY RESOURCES UK LIMITED","role":"licence-origin-operator","records":1058},{"name":"SHELL U.K. LIMITED","role":"licence-origin-operator","records":1053},{"name":"Norsk Hydro Produksjon AS","role":"drilling-operator","records":1046},{"name":"NEO NEXT + ENERGY RESOURCES UK LIMITED","role":"licence-td-operator","records":1043},{"name":"SHELL U.K. LIMITED","role":"licence-td-operator","records":1038},{"name":"SHELL U.K. LIMITED","role":"responsible-wellbore-operator","records":1028},{"name":"Den norske stats oljeselskap a.s","role":"drilling-operator","records":963},{"name":"PERENCO UK LIMITED","role":"licence-origin-operator","records":888},{"name":"TAQA BRATANI LIMITED","role":"licence-origin-operator","records":794},{"name":"TAQA BRATANI LIMITED","role":"responsible-wellbore-operator","records":792},{"name":"TAQA BRATANI LIMITED","role":"licence-td-operator","records":785},{"name":"CNR INTERNATIONAL (U.K.) LIMITED","role":"licence-origin-operator","records":742},{"name":"BP EXPLORATION OPERATING COMPANY LIMITED","role":"licence-origin-operator","records":730},{"name":"CNR INTERNATIONAL (U.K.) LIMITED","role":"responsible-wellbore-operator","records":707},{"name":"CNR INTERNATIONAL (U.K.) LIMITED","role":"licence-td-operator","records":682},{"name":"PERENCO UK LIMITED","role":"responsible-wellbore-operator","records":652},{"name":"PERENCO UK LIMITED","role":"licence-td-operator","records":637},{"name":"KCA Deutag Drilling Ltd","role":"drilling-contractor","records":603},{"name":"APACHE NORTH SEA LIMITED","role":"licence-origin-operator","records":601},{"name":"BP EXPLORATION OPERATING COMPANY LIMITED","role":"responsible-wellbore-operator","records":590},{"name":"ConocoPhillips Skandinavia AS","role":"drilling-operator","records":590},{"name":"APACHE NORTH SEA LIMITED","role":"licence-td-operator","records":584},{"name":"APACHE NORTH SEA LIMITED","role":"responsible-wellbore-operator","records":582},{"name":"APACHE BERYL I LIMITED","role":"responsible-wellbore-operator","records":576},{"name":"APACHE BERYL I LIMITED","role":"licence-origin-operator","records":573},{"name":"APACHE BERYL I LIMITED","role":"licence-td-operator","records":561},{"name":"CHRYSAOR PRODUCTION (U.K.) LIMITED","role":"licence-origin-operator","records":538},{"name":"ENQUEST HEATHER LIMITED","role":"responsible-wellbore-operator","records":525},{"name":"BP EXPLORATION OPERATING COMPANY LIMITED","role":"licence-td-operator","records":522},{"name":"ENQUEST HEATHER LIMITED","role":"licence-origin-operator","records":521},{"name":"BP AFRICA LIMITED","role":"licence-origin-operator","records":517},{"name":"ENQUEST HEATHER LIMITED","role":"licence-td-operator","records":512},{"name":"Phillips Petroleum Company Norway","role":"drilling-operator","records":500},{"name":"CHRYSAOR PRODUCTION (U.K.) LIMITED","role":"licence-td-operator","records":495},{"name":"Statoil ASA (old)","role":"drilling-operator","records":474},{"name":"Aker BP ASA","role":"drilling-operator","records":460},{"name":"CNOOC PETROLEUM EUROPE LIMITED","role":"licence-origin-operator","records":455},{"name":"CNOOC PETROLEUM EUROPE LIMITED","role":"responsible-wellbore-operator","records":446},{"name":"CHRYSAOR PRODUCTION (U.K.) LIMITED","role":"responsible-wellbore-operator","records":442},{"name":"CNOOC PETROLEUM EUROPE LIMITED","role":"licence-td-operator","records":424},{"name":"NEO NEXT+ ENERGY E&P UK LIMITED","role":"responsible-wellbore-operator","records":392},{"name":"NEO NEXT+ ENERGY E&P UK LIMITED","role":"licence-origin-operator","records":391},{"name":"Noble Drilling (Nederland) B.V.","role":"drilling-contractor","records":387},{"name":"ADURA ENERGY LIMITED","role":"licence-origin-operator","records":378},{"name":"ADURA ENERGY LIMITED","role":"licence-td-operator","records":378},{"name":"ADURA ENERGY LIMITED","role":"responsible-wellbore-operator","records":378},{"name":"NEO NEXT+ ENERGY E&P UK LIMITED","role":"licence-td-operator","records":370},{"name":"Wintershall Noordzee B.V.","role":"reported-owner","records":333},{"name":"ISLAND GAS LIMITED","role":"licence-origin-operator","records":321},{"name":"ITHACA OIL AND GAS LIMITED","role":"licence-origin-operator","records":317},{"name":"ITHACA OIL AND GAS LIMITED","role":"responsible-wellbore-operator","records":317},{"name":"ITHACA OIL AND GAS LIMITED","role":"licence-td-operator","records":315},{"name":"Transocean Drilling Ltd.","role":"drilling-contractor","records":296},{"name":"ITHACA SP E&P LIMITED","role":"responsible-wellbore-operator","records":284},{"name":"Eni Energy Netherlands B.V.","role":"reported-owner","records":272},{"name":"ITHACA SP E&P LIMITED","role":"licence-origin-operator","records":272},{"name":"ITHACA SP E&P LIMITED","role":"licence-td-operator","records":269},{"name":"Esso Exploration and Production Norway A/S","role":"drilling-operator","records":265},{"name":"NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED","role":"licence-origin-operator","records":255},{"name":"Tenaz Energy Netherlands B.V.","role":"reported-owner","records":249},{"name":"NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED","role":"licence-td-operator","records":244},{"name":"NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED","role":"responsible-wellbore-operator","records":243},{"name":"Penrod International Drilling Company","role":"drilling-contractor","records":225},{"name":"Saga Petroleum ASA","role":"drilling-operator","records":220},{"name":"StatoilHydro Petroleum AS","role":"drilling-operator","records":207},{"name":"Vermilion Energy Netherlands B.V.","role":"reported-owner","records":186},{"name":"ENI UK LIMITED","role":"licence-td-operator","records":185},{"name":"BRITOIL LIMITED","role":"licence-origin-operator","records":184},{"name":"BRITOIL LIMITED","role":"responsible-wellbore-operator","records":184},{"name":"ENI UK LIMITED","role":"licence-origin-operator","records":183},{"name":"Drilltec Netherlands B.V.","role":"drilling-contractor","records":182},{"name":"IKU Petroleumsforskning SINTEF Gruppen","role":"drilling-operator","records":180},{"name":"Elf Petroleum Norge AS","role":"drilling-operator","records":179},{"name":"A/S Norske Shell","role":"drilling-operator","records":178},{"name":"BRITOIL LIMITED","role":"licence-td-operator","records":178},{"name":"CHRYSAOR PETROLEUM COMPANY U.K. LIMITED","role":"licence-origin-operator","records":174},{"name":"CHRYSAOR PETROLEUM COMPANY U.K. LIMITED","role":"responsible-wellbore-operator","records":174},{"name":"CHRYSAOR PETROLEUM COMPANY U.K. LIMITED","role":"licence-td-operator","records":164},{"name":"Lundin Norway AS","role":"drilling-operator","records":160},{"name":"Lapidoth Israel Oil Prospectors Corp. Ltd.","role":"source-operator","records":159},{"name":"TotalEnergies EP Nederland B.V.","role":"reported-owner","records":158},{"name":"HESS LIMITED","role":"responsible-wellbore-operator","records":157},{"name":"Amoco Norway Oil Company","role":"drilling-operator","records":156},{"name":"HESS LIMITED","role":"licence-origin-operator","records":156},{"name":"HESS LIMITED","role":"licence-td-operator","records":156},{"name":"Neddrill Nederland B.V.","role":"drilling-contractor","records":153},{"name":"PETROLEUM CORPORATION OF NZ EXPL.  LTD","role":"source-operator","records":153},{"name":"PREMIER OIL UK LIMITED","role":"responsible-wellbore-operator","records":150},{"name":"Petroland B.V.","role":"original-operator","records":149},{"name":"PREMIER OIL UK LIMITED","role":"licence-origin-operator","records":144},{"name":"ITHACA ENERGY (UK) LIMITED","role":"licence-origin-operator","records":141},{"name":"Wintershall Noordzee B.V.","role":"original-operator","records":140},{"name":"ITHACA ENERGY (UK) LIMITED","role":"licence-td-operator","records":139}],"records":[{"id":"uk-nsta-onshore-l46-23-a12","wellId":"L46/23-A12","sourceRecordId":"L46/23-A12","name":"WELTON A12","wellName":"WELTON A12","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782512,"longitude":-0.445559,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1988-08-22","completionDate":"1988-10-07","status":"Constructed","depth":"1844.01 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1844.0095171971054,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1564.5993576218088,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1988-10-06","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A12%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Dry Hole","fluidTypes":"Water","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A12%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a12"},{"id":"uk-nsta-onshore-l46-23-a13","wellId":"L46/23-A13","sourceRecordId":"L46/23-A13","name":"WELTON A13","wellName":"WELTON A13","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782592,"longitude":-0.4454837,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1988-10-08","completionDate":"1988-11-14","status":"Constructed","depth":"1709.01 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1709.014,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1505.407,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1988-11-09","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A13%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A13%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a13"},{"id":"uk-nsta-onshore-l46-23-a14","wellId":"L46/23-A14","sourceRecordId":"L46/23-A14","name":"WELTON A14","wellName":"WELTON A14","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782674,"longitude":-0.4454235,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1988-11-17","completionDate":"1988-12-24","status":"Constructed","depth":"1883.05 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1883.054,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1485.9,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1988-12-23","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A14%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A14%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a14"},{"id":"uk-nsta-onshore-l46-23-a15","wellId":"L46/23-A15","sourceRecordId":"L46/23-A15","name":"WELTON A15","wellName":"WELTON A15","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782844,"longitude":-0.4453478,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1988-12-24","completionDate":"1989-01-28","status":"Suspended","depth":"1712 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1712.001,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1467.886,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1989-01-13","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A15%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":null,"totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A15%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a15"},{"id":"uk-nsta-onshore-l46-23-a16","wellId":"L46/23-A16","sourceRecordId":"L46/23-A16","name":"WELTON A16","wellName":"WELTON A16","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782924,"longitude":-0.4452726,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1989-01-29","completionDate":"1989-02-23","status":"Suspended","depth":"1660 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1659.9987094768019,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1469.806557765894,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1989-02-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A16%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A16%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a16"},{"id":"uk-nsta-onshore-l46-23-a17","wellId":"L46/23-A17","sourceRecordId":"L46/23-A17","name":"WELTON A17","wellName":"WELTON A17","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2783005,"longitude":-0.4451973,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1989-02-24","completionDate":"1989-03-15","status":"Suspended","depth":"1500.99 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1500.9875977184988,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1457.3097577848891,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1989-03-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A17%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A17%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a17"},{"id":"uk-nsta-onshore-l46-23-a18","wellId":"L46/23-A18","sourceRecordId":"L46/23-A18","name":"WELTON A18","wellName":"WELTON A18","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2784081,"longitude":-0.4444884,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1991-02-25","completionDate":"1991-03-27","status":"Constructed","depth":"1891.99 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1891.9850371241828,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1500.682797718962,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1991-03-26","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A18%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A18%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a18"},{"id":"uk-nsta-onshore-l46-23-a19","wellId":"L46/23-A11","sourceRecordId":"L46/23-A19","name":"WELTON A19","wellName":"WELTON A19","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2783165,"longitude":-0.4450467,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1994-01-28","completionDate":"1994-02-14","status":"Constructed","depth":"1830 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1830.0000557783999,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1417.0000431901599,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1994-03-09","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Decommissioned","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A19%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A19%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a19"},{"id":"uk-nsta-onshore-l46-23-a20","wellId":"L46/23-A20","sourceRecordId":"L46/23-A20","name":"WELTON A20","wellName":"WELTON A20","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1994-06-18","completionDate":"1994-12-06","status":"Suspended","depth":"1922 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1922.0000585825599,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1398.200042617136,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1994-12-06","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a20"},{"id":"uk-nsta-onshore-l46-23-a20x","wellId":"L46/23-A20","sourceRecordId":"L46/23-A20X","name":"WELTON A20X","wellName":"WELTON A20X","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1996-04-08","completionDate":"1996-04-13","status":"Constructed","depth":"1852 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1851.995277184967,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1405.1889578641126,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1996-04-09","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20X%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A20","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20X%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a20x"},{"id":"uk-nsta-onshore-l46-23-a20y","wellId":"L46/23-A20","sourceRecordId":"L46/23-A20Y","name":"WELTON A20Y","wellName":"WELTON A20Y","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1994-11-30","completionDate":"1994-12-02","status":"Constructed","depth":"1718.01 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1718.005197388632,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"}],"totalDepthReachedDate":null,"completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20Y%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A20","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20Y%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a20y"},{"id":"uk-nsta-onshore-l46-23-a20z","wellId":"L46/23-A20","sourceRecordId":"L46/23-A20Z","name":"WELTON A20Z","wellName":"WELTON A20Z","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1994-11-20","completionDate":"1994-11-30","status":"Constructed","depth":"1965.96 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1965.9599970117408,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"}],"totalDepthReachedDate":"1994-11-30","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20Z%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A20","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A20Z%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a20z"},{"id":"uk-nsta-onshore-l46-23-a21","wellId":"L46/23-A21","sourceRecordId":"L46/23-A21","name":"WELTON A21","wellName":"WELTON A21","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1995-01-01","completionDate":"1995-09-22","status":"Suspended","depth":"1934 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1934.0000589483197,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1415.300043138344,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1995-08-22","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A21%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A21%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a21"},{"id":"uk-nsta-onshore-l46-23-a22","wellId":"L46/23-A22","sourceRecordId":"L46/23-A22","name":"WELTON A22","wellName":"WELTON A22","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781094,"longitude":-0.447784,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1995-09-13","completionDate":"1996-10-12","status":"Suspended","depth":"1754 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1754,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1311.8,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1995-10-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A22%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Show","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A22%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a22"},{"id":"uk-nsta-onshore-l46-23-a22z","wellId":"L46/23-A22","sourceRecordId":"L46/23-A22Z","name":"WELTON A22Z","wellName":"WELTON A22Z","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781094,"longitude":-0.447784,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1995-09-21","completionDate":"1996-10-12","status":"Suspended","depth":"1677.5 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1677.5,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1292.352,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":null,"completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A22Z%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Show","fluidTypes":"Oil","parentWell":"L46/23-A22","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A22Z%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a22z"},{"id":"uk-nsta-onshore-l46-23-a23","wellId":"L46/23-A10Z","sourceRecordId":"L46/23-A23","name":"WELTON A23","wellName":"WELTON A23","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2783085,"longitude":-0.445122,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1995-10-15","completionDate":"1995-10-19","status":"Constructed","depth":"1732.48 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1732.4831973666255,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1301.700039675816,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":null,"completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A23%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A10Z","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A23%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a23"},{"id":"uk-nsta-onshore-l46-23-a24","wellId":"L46/23-A24","sourceRecordId":"L46/23-A24","name":"WELTON A24","wellName":"WELTON A24","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782346,"longitude":-0.4456646,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1996-01-11","completionDate":"1996-02-17","status":"Constructed","depth":"1925 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1925,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1415.86,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1996-02-10","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A24%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A24%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a24"},{"id":"uk-nsta-onshore-l46-23-a25","wellId":"L46/23-A16","sourceRecordId":"L46/23-A25","name":"WELTON A25","wellName":"WELTON A25","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782924,"longitude":-0.4452726,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1996-09-24","completionDate":"1996-10-09","status":"Constructed","depth":"1818.13 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1818.1319972364392,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1415.9300430965864,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1996-09-28","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A25%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A16","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A25%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a25"},{"id":"uk-nsta-onshore-l46-23-a26","wellId":"L46/23-A22","sourceRecordId":"L46/23-A26","name":"WELTON A26","wellName":"WELTON A26","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781094,"longitude":-0.447784,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1996-10-13","completionDate":"1996-10-27","status":"Constructed","depth":"2027.53 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":2027.53,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1332.586,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1996-10-22","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A26%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A22","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A26%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a26"},{"id":"uk-nsta-onshore-l46-23-a27","wellId":"L46/23-A15","sourceRecordId":"L46/23-A27","name":"WELTON A27","wellName":"WELTON A27","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2782844,"longitude":-0.4453478,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-03-27","completionDate":"1997-04-03","status":"Constructed","depth":"1966 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1966,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1417.9,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1997-03-31","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A27%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A15","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A27%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a27"},{"id":"uk-nsta-onshore-l46-23-a28","wellId":"L46/23-A8","sourceRecordId":"L46/23-A28","name":"WELTON A28","wellName":"WELTON A28","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781317,"longitude":-0.4474232,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-04-24","completionDate":"1997-05-24","status":"Suspended","depth":null,"basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[],"totalDepthReachedDate":"1997-05-17","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A8","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a28"},{"id":"uk-nsta-onshore-l46-23-a28y","wellId":"L46/23-A8","sourceRecordId":"L46/23-A28Y","name":"Welton A28Y","wellName":"Welton A28Y","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781317,"longitude":-0.4474232,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"IGAS ENERGY DEVELOPMENT LIMITED","role":"licence-origin-operator"}],"spudDate":"1998-03-13","completionDate":"1998-03-20","status":"Suspended","depth":"593.75 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":593.7503990974993,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":429.015143347897,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":null,"completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28Y%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":null,"fluidTypes":"Oil","parentWell":"L46/23-A28","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28Y%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a28y"},{"id":"uk-nsta-onshore-l46-23-a28z","wellId":"L46/23-A8","sourceRecordId":"L46/23-A28Z","name":"Welton A28Z","wellName":"Welton A28Z","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781317,"longitude":-0.4474232,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"IGAS ENERGY DEVELOPMENT LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-05-08","completionDate":"1997-05-17","status":"Suspended","depth":null,"basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":49.6,"unit":"°C","kind":"maximum-hole-temperature","reference":null,"sourceField":"MXTDTEMPC"}],"totalDepthReachedDate":null,"completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28Z%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":null,"fluidTypes":"Oil","parentWell":"L46/23-A28","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A28Z%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a28z"},{"id":"uk-nsta-onshore-l46-23-a29","wellId":"L46/23-A9","sourceRecordId":"L46/23-A29","name":"WELTON A29","wellName":"WELTON A29","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781393,"longitude":-0.4473179,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-07-09","completionDate":"1997-07-15","status":"Suspended","depth":"1685 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1685.0000513588,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1398.200042617136,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1997-07-13","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A29%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A9","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A29%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a29"},{"id":"uk-nsta-onshore-l46-23-a29z","wellId":"L46/23-A9","sourceRecordId":"L46/23-A29Z","name":"WELTON A29Z","wellName":"WELTON A29Z","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781393,"longitude":-0.4473179,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-10-21","completionDate":"1997-10-29","status":"Suspended","depth":null,"basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[],"totalDepthReachedDate":"1997-10-23","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A29Z%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":null,"fluidTypes":null,"parentWell":"L46/23-A29","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A29Z%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a29z"},{"id":"uk-nsta-onshore-l46-23-a3","wellId":"L46/23-A3","sourceRecordId":"L46/23-A3","name":"WELTON A3","wellName":"WELTON A3","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781094,"longitude":-0.447784,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1984-11-01","completionDate":"1984-11-30","status":"Suspended","depth":"1617 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1617.000573542159,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1515.8008776959828,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1984-11-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Decommissioned","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A3%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A3%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a3"},{"id":"uk-nsta-onshore-l46-23-a30","wellId":"L46/23-A21","sourceRecordId":"L46/23-A30","name":"WELTON A30","wellName":"WELTON A30","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781243,"longitude":-0.4475434,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1997-09-30","completionDate":"1997-10-29","status":"Constructed","depth":null,"basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[],"totalDepthReachedDate":"1997-10-29","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A30%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A21","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A30%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a30"},{"id":"uk-nsta-onshore-l46-23-a31","wellId":"L46/23-A7","sourceRecordId":"L46/23-A31","name":"WELTON A31","wellName":"WELTON A31","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781274,"longitude":-0.4474835,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1998-02-24","completionDate":"1998-03-20","status":"Decomissioned","depth":null,"basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[],"totalDepthReachedDate":"1998-03-20","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A31%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":null,"fluidTypes":"Water","parentWell":"L46/23-A7","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A31%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a31"},{"id":"uk-nsta-onshore-l46-23-a32","wellId":"L46/23-A8","sourceRecordId":"L46/23-A32","name":"WELTON A32","wellName":"WELTON A32","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781317,"longitude":-0.4474232,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1998-03-13","completionDate":"1998-03-20","status":"Constructed","depth":"1948 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1948.0000593750399,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1389.300042345864,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1998-03-20","completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A32%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A28","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A32%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a32"},{"id":"uk-nsta-onshore-l46-23-a33","wellId":"L46/23-A17","sourceRecordId":"L46/23-A33","name":"WELTON A33","wellName":"WELTON A33","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2783005,"longitude":-0.4451973,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"STAR ENERGY OIL UK LIMITED","role":"licence-origin-operator"}],"spudDate":"2005-02-08","completionDate":"2005-03-25","status":"Constructed","depth":"1682.98 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1682.9836774418648,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1387.784877890567,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":null,"completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A33%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Gas and Oil Well","fluidTypes":"Gas, Oil","parentWell":"L46/23-A17","parentRole":"Re-drill","sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A33%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a33"},{"id":"uk-nsta-onshore-l46-23-a34","wellId":"L46/23-A9","sourceRecordId":"L46/23-A34","name":"WELTON A34","wellName":"WELTON A34","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781393,"longitude":-0.4473179,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"2007-12-08","completionDate":"2008-01-09","status":"Constructed","depth":"2069.9 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":2069.8967968537568,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1405.1279978642053,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"2007-12-17","completionStatus":"Completed (Operating)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A34%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"L46/23-A29","parentRole":"Sidetrack","sidetrackType":"Geological","licenceNumber":"PL179","totalDepthLicenceNumber":"PL179","classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A34%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a34"},{"id":"uk-nsta-onshore-l46-23-a4","wellId":"L46/23-A4","sourceRecordId":"L46/23-A4","name":"WELTON A4","wellName":"WELTON A4","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781086,"longitude":-0.447724,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1984-12-07","completionDate":"1984-12-31","status":"Suspended","depth":"1675 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1675.0009654539983,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1542.6994776550969,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1984-12-08","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A4%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Show","fluidTypes":"Water","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A4%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a4"},{"id":"uk-nsta-onshore-l46-23-a5","wellId":"L46/23-A5","sourceRecordId":"L46/23-A5","name":"WELTON A5","wellName":"WELTON A5","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781168,"longitude":-0.4476637,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1985-01-07","completionDate":"1985-01-31","status":"Suspended","depth":"1665 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1665.0004774691993,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1472.3973577619558,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1985-01-05","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A5%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A5%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a5"},{"id":"uk-nsta-onshore-l46-23-a6","wellId":"L46/23-A6","sourceRecordId":"L46/23-A6","name":"WELTON A6","wellName":"WELTON A6","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781252,"longitude":-0.4476184,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1985-02-05","completionDate":"1985-02-27","status":"Suspended","depth":"1766.99 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1766.9865573141803,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1526.2859976800453,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1985-02-06","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A6%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A6%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a6"},{"id":"uk-nsta-onshore-l46-23-a7","wellId":"L46/23-A7","sourceRecordId":"L46/23-A7","name":"WELTON A7","wellName":"WELTON A7","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781274,"longitude":-0.4474835,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1985-03-04","completionDate":"1985-03-20","status":"Decomissioned","depth":"1671.49 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1671.4927174593308,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1549.6946376444641,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1985-03-05","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A7%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A7%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a7"},{"id":"uk-nsta-onshore-l46-23-a8","wellId":"L46/23-A8","sourceRecordId":"L46/23-A8","name":"WELTON A8","wellName":"WELTON A8","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781317,"longitude":-0.4474232,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1985-03-23","completionDate":"1985-04-22","status":"Suspended","depth":"1928.99 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1928.9877570679384,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1529.608317674995,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1985-03-25","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A8%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Dry Hole","fluidTypes":"Water","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A8%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a8"},{"id":"uk-nsta-onshore-l46-23-a9","wellId":"L46/23-A9","sourceRecordId":"L46/23-A9","name":"WELTON A9","wellName":"WELTON A9","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2781393,"longitude":-0.4473179,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1985-05-07","completionDate":"1985-05-26","status":"Suspended","depth":"1635.86 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1635.8615975134903,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1464.807837773492,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1985-05-26","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A9%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-A9%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-a9"},{"id":"uk-nsta-onshore-l46-23-b1","wellId":"L46/23- B1","sourceRecordId":"L46/23- B1","name":"WELTON B1","wellName":"WELTON B1","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2748036,"longitude":-0.4314816,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1984-01-21","completionDate":"1984-02-28","status":"Constructed","depth":"1557.58 m MD · Kelly Bushing","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1557.576,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":1455.171,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":null,"completionStatus":"Completed (Shut In)","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-+B1%27&outFields=%2A&outSR=4326&f=json","purpose":"Appraisal","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"appraisal","basis":"wellficent-source-purpose-v2","sourceValue":"Appraisal","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-+B1%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-b1"},{"id":"uk-nsta-onshore-l46-23-b10","wellId":"L46/23-B10","sourceRecordId":"L46/23-B10","name":"WELTON B10","wellName":"WELTON B10","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2743245,"longitude":-0.4312742,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1990-01-19","completionDate":"1990-02-09","status":"Suspended","depth":"1704.99 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1704.9902374084147,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1489.2527977363357,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1990-02-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-B10%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-B10%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-b10"},{"id":"uk-nsta-onshore-l46-23-b11","wellId":"L46/23-B11","sourceRecordId":"L46/23-B11","name":"WELTON B11","wellName":"WELTON B11","catalogue":"uk-nsta-onshore","sector":"oil-gas","latitude":53.2743075,"longitude":-0.4313498,"operator":null,"operatorRole":null,"companies":[{"sourceId":null,"url":null,"name":"ISLAND GAS LIMITED","role":"licence-origin-operator"}],"spudDate":"1990-02-10","completionDate":"1996-06-19","status":"Suspended","depth":"1701 m MD · Rotary Table","basin":null,"area":"Landward","sourceUpdatedAt":null,"measurements":[{"value":1700.997,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":1430.914,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"}],"totalDepthReachedDate":"1990-03-01","completionStatus":"Abandoned Phase 1","wellboreStatus":"EXTANT","originStatus":"Present","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-B11%27&outFields=%2A&outSR=4326&f=json","purpose":"Development","facility":null,"targetField":"WELTON","prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"PL179","totalDepthLicenceNumber":null,"classification":{"purposeGroup":"development","basis":"wellficent-source-purpose-v2","sourceValue":"Development","kind":"derived"},"coordinateCrs":"EPSG:4326","snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","source":{"reuseLicense":"nsta-user-agreement-2023-noncommercial","commercialUseAllowed":false,"attribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceAsOf":null,"positionAccuracy":null,"excludedRows":0,"sourceRows":2138,"termsUrl":"https://www.nstauthority.co.uk/media/u51lhvio/nsta-user-agreeement-june-2023.pdf","id":"uk-nsta-onshore","name":"NSTA — England onshore wellbore top holes","source":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0","checkedAt":"2026-10-02","importedAt":"2026-10-03T00:30:00+00:00","sourceCrs":"EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary","coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","currentStatusVerified":false,"exclusions":{},"sourceSha256":"74a5e0ef337cacaf14ebdb8a12596949f8d61fb45a9ea8be3d9dcaa69031ca87","sourceRetrievedAt":"2026-10-02T23:36:06+00:00","recordType":"wellbore-top-hole","rightsReviewUrl":"https://www.arcgis.com/home/item.html?id=d40f9dc58ca84268935582152a5b20f9","reuseNote":"NSTA User Agreement permits non-commercial exploitation with attribution; other rights may be excluded.","recordCount":2138,"distinctSourceWellIds":1787,"bounds":[-7.0134585,50.5932326,1.6609397,58.4033062],"recordUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS%20onshore%20petroleum%20wells%20top%20holes%20WGS84/FeatureServer/0/query?where=WELLREGNO%3D%27L46%2F23-B11%27&outFields=%2A&outSR=4326&f=json"},"qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","url":"https://wellficent.com/en/wells/record/uk-nsta-onshore-l46-23-b11"}]}