{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21a-13","wellId":"15/21a- 13","sourceRecordId":"15/21a- 13","name":"15/21a- 13","wellName":"15/21a- 13","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"2694.43 m MD · Kelly Bushing","spudDate":"1984-07-06","completionDate":"1984-07-22","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":2694.4319959044633,"measurements":[{"value":2694.4319959044633,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":141.42719978503064,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.1860458,"longitude":0.1201926,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21a-+13%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1984-07-18","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Dry Hole","fluidTypes":null,"parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"P218","totalDepthLicenceNumber":"P218"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21a-52","wellId":"15/21a- 52","sourceRecordId":"15/21a- 52","name":"15/21a- 52","wellName":"15/21a- 52","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"2942.84 m MD · Kelly Bushing","spudDate":"1993-12-11","completionDate":"1994-01-05","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":2942.843995526877,"measurements":[{"value":2942.843995526877,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":2757.2207958090244,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"},{"value":140.20799978688385,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.2350144,"longitude":0.1120574,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21a-+52%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1994-01-04","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"P218","totalDepthLicenceNumber":"P588"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21a-52y","wellId":"15/21a- 52","sourceRecordId":"15/21a- 52Y","name":"15/21a- 52Y","wellName":"15/21a- 52Y","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"3003.8 m MD · Kelly Bushing","spudDate":"1995-10-31","completionDate":"1995-11-24","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":3003.803995434218,"measurements":[{"value":3003.803995434218,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":140.20799978688385,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.2350144,"longitude":0.1120574,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21a-+52Y%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1995-11-24","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Dry Hole","fluidTypes":null,"parentWell":"15/21a- 52Z","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"P218","totalDepthLicenceNumber":"P218"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21a-52z","wellId":"15/21a- 52","sourceRecordId":"15/21a- 52Z","name":"15/21a- 52Z","wellName":"15/21a- 52Z","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"2968.75 m MD · Kelly Bushing","spudDate":"1994-01-04","completionDate":"1994-01-24","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":2968.751995487497,"measurements":[{"value":2968.751995487497,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":2859.023995654283,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"},{"value":140.20799978688385,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.2350144,"longitude":0.1120574,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21a-+52Z%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1994-01-24","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"15/21a- 52","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"P218","totalDepthLicenceNumber":"P588"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21a-60","wellId":"15/21a- 60","sourceRecordId":"15/21a- 60","name":"15/21a- 60","wellName":"15/21a- 60","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"3259.53 m MD · Rotary Table","spudDate":"2012-10-14","completionDate":"2012-11-15","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":3259.5311950455125,"measurements":[{"value":3259.5311950455125,"unit":"m","kind":"measured-depth","reference":"Rotary Table","sourceField":"TDMDDEPM"},{"value":3236.366395080723,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"},{"value":140.20799978688385,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.2543157,"longitude":0.0938475,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21a-+60%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"2012-11-05","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Dry Hole","fluidTypes":null,"parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"P218","totalDepthLicenceNumber":"P218"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21b-47y","wellId":"15/21b- 47","sourceRecordId":"15/21b- 47Y","name":"15/21b- 47Y","wellName":"15/21b- 47Y","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"4321.45 m MD · Kelly Bushing","spudDate":"1992-08-31","completionDate":"1992-10-19","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":4321.454393431389,"measurements":[{"value":4321.454393431389,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":139.29359978827372,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.3144025,"longitude":0.0341434,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21b-+47Y%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1992-09-07","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"15/21b- 47Z","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"P588","totalDepthLicenceNumber":"P588"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21b-47z","wellId":"15/21b- 47","sourceRecordId":"15/21b- 47Z","name":"15/21b- 47Z","wellName":"15/21b- 47Z","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"4119.37 m MD · Kelly Bushing","spudDate":"1992-06-24","completionDate":"1992-08-30","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":4119.371993738554,"measurements":[{"value":4119.371993738554,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":139.29359978827372,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.3144025,"longitude":0.0341434,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21b-+47Z%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1992-08-30","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":"15/21b- 47","parentRole":"Sidetrack","sidetrackType":null,"licenceNumber":"P588","totalDepthLicenceNumber":"P588"}
{"snapshotSha256":"7d6e677299352a7b989393edc6a851c0822df0e5f2355d2bd0f6d0b3c86192df","sourceSha256":"ad10c28aabbd58cbd05f0692b3e8b18d929681e8afce4d92c4c5aeeaeadcefb8","id":"uk-nsta-offshore-15-21b-56","wellId":"15/21b- 56","sourceRecordId":"15/21b- 56","name":"15/21b- 56","wellName":"15/21b- 56","catalogue":"uk-nsta-offshore","sector":"oil-gas","purposeGroup":"appraisal","classificationBasis":"wellficent-source-purpose-v2","classificationSha256":"83e4157601b4d73cb883d6e8578f9fe1ea467bb929d96a74071d77068ee8ca48","qualityFlags":[],"qualityRuleVersion":"wellficent-row-quality-v1","sourcePurpose":"Appraisal","sourceStatus":"Decomissioned","operator":"SERICA ENERGY NORTE LIMITED","operatorRole":"responsible-wellbore-operator","companies":[{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"responsible-wellbore-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-origin-operator"},{"sourceId":null,"url":null,"name":"SERICA ENERGY NORTE LIMITED","role":"licence-td-operator"}],"basin":null,"area":"Seaward","depth":"4037.08 m MD · Kelly Bushing","spudDate":"1997-02-07","completionDate":"2005-10-03","sourceUpdatedAt":null,"statusEffectiveDate":null,"authorizationDate":null,"operatorCode":null,"measuredDepthM":4037.0759938636443,"measurements":[{"value":4037.0759938636443,"unit":"m","kind":"measured-depth","reference":"Kelly Bushing","sourceField":"TDMDDEPM"},{"value":3898.087194074907,"unit":"m","kind":"vertical-depth","reference":"subsea","sourceField":"TDTVDSSM"},{"value":138.3791997896636,"unit":"m","kind":"water-depth","reference":null,"sourceField":"WATDEP_M"}],"latitude":58.3183108,"longitude":0.0209151,"coordinateCrs":"EPSG:4326","positionAccuracy":null,"coordinateMethod":"official-WGS84-top-hole-geometry-outSR-4326","sourceAsOf":null,"sourceCheckedAt":"2026-10-02","sourceUrl":"https://services-eu1.arcgis.com/OZMfUznmLTnWccBc/arcgis/rest/services/UKCS_offshore_wellbore_top_holes_(WGS84)/FeatureServer/0/query?where=WELLREGNO%3D%2715%2F21b-+56%27&outFields=%2A&outSR=4326&f=json","sourceAttribution":"Contains information provided by the North Sea Transition Authority and/or other third parties.","sourceTermsUrl":null,"sourceRightsReviewUrl":"https://www.arcgis.com/home/item.html?id=b5752e9f56a949e3ad44a08144e621a8","reuseLicense":"unconfirmed","commercialUseAllowed":null,"spudYear":null,"facility":null,"totalDepthReachedDate":"1997-03-29","completionStatus":"Abandoned Phase 3","wellboreStatus":"EXTANT","originStatus":"Decommissioned","targetField":null,"prospect":null,"flowClass":"Oil Well","fluidTypes":"Oil","parentWell":null,"parentRole":null,"sidetrackType":null,"licenceNumber":"P588","totalDepthLicenceNumber":"P588"}