30/12b- 4
Partial source coverage. Status and company roles are reported by each source, not independently verified as current. Unknown does not mean zero.
- Name / source ID
- 30/12b- 4
- Borehole / source record ID
- 30/12b- 4
- Sector
- Oil and gas
- Derived purpose group
- Appraisal
- Operator in source snapshot
- NEO NEXT + ENERGY RESOURCES UK LIMITED
- Recorded spud date
- 1985-07-19
- Recorded completion date
- 1985-10-16
- Latitude / longitude (WGS84)
- 56.528772 / 2.235268
- Source-reported measurements
- 4600.04 m MD · Kelly Bushing
- Status reported by source
- Decomissioned
- Source accessed
- 2026-10-02
- Source snapshot date
- Not reported / not verified
- Original coordinate reference system
- EPSG:4326 WGS84 service geometry; source TOPHOLEDTM attributes vary
- Total depth reached date
- 1985-09-23
- Source completion status
- Abandoned Phase 3
- Source wellbore status
- EXTANT
- Source well-origin status
- Decommissioned
- Target field
- HALLEY
- Flow class
- Oil Well
- Source fluid types
- Oil
- Licence number
- P185
- Total-depth licence number
- P185
Company roles reported by source
- Responsible wellbore operatorNEO NEXT + ENERGY RESOURCES UK LIMITED
- Licence operator at well originNEO NEXT + ENERGY RESOURCES UK LIMITED
- Licence operator at total depthNEO NEXT + ENERGY RESOURCES UK LIMITED
| Source-reported measurements | Value | Reference |
|---|---|---|
| TDMDDEPM | 4,600.04 m | Kelly Bushing |
| TDTVDSSM | 4,572.15 m | subsea |
| WATDEP_M | 79.55 m | Not reported / not verified |
NSTA — UK offshore wellbore top holes ↗
Source accessed:
Reuse terms: unconfirmed
Contains information provided by the North Sea Transition Authority and/or other third parties.
ArcGIS item metadata does not specify a reuse licence; public access alone is not a licence.
Nearby wells and heat flow
These tools are descriptive: not forecasts, reserve estimates or investment advice. Source coverage is partial; unknown does not mean zero.
| Name | Distance | Source-reported measurements | Source catalogues |
|---|---|---|---|
| 30/12b- 10 | 0.42 km | 4,191 m | NSTA — UK offshore wellbore top holes |
| 30/12b- 8 | 2.19 km | 4,053 m | NSTA — UK offshore wellbore top holes |
| 30/12b- 6 | 2.37 km | 4,329 m | NSTA — UK offshore wellbore top holes |
| 30/12b- 3 | 2.89 km | 4,907 m | NSTA — UK offshore wellbore top holes |
| 30/12b- 2 | 3.01 km | 4,887 m | NSTA — UK offshore wellbore top holes |
| 30/11b- 5 | 4.41 km | 4,581 m | NSTA — UK offshore wellbore top holes |
| 30/11b- 4 | 5.64 km | 4,572 m | NSTA — UK offshore wellbore top holes |
| 30/17b- 16 | 5.67 km | 4,600 m | NSTA — UK offshore wellbore top holes |
| 30/12b- 7 | 6.25 km | 4,827 m | NSTA — UK offshore wellbore top holes |
| 30/17b- 9 | 6.30 km | 4,131 m | NSTA — UK offshore wellbore top holes |
| 30/16-F26 | 6.36 km | 4,301 m | NSTA — UK offshore wellbore top holes |
| 30/16-F26J | 6.36 km | 1,091 m | NSTA — UK offshore wellbore top holes |
Subsurface temperature and heat flow
Compare bottom-hole temperatures with depth and see measured heat flow near wells: context for geothermal reuse.
| Name | Distance | Subsurface temperature and heat flow | Quality flags |
|---|---|---|---|
| R24-P003227 | 16.25 km | 66.00 mW/m2 | {"qualityScores":["Ux.Mx.-------"]} |
| R24-P003242 | 16.77 km | 72.00 mW/m2 | {"qualityScores":["Ux.Mx.-------"]} |
| R24-P003240 | 18.13 km | 52.00 mW/m2 | {"qualityScores":["Ux.Mx.-------"]} |
| R24-P003239 | 18.51 km | 64.00 mW/m2 | {"qualityScores":["Ux.Mx.-------"]} |
| R24-P003241 | 18.70 km | 49.00 mW/m2 | {"qualityScores":["Ux.Mx.-------"]} |
IHFC · Global Heat Flow Database, Release 2024 (v. 2026.03) ↗
Source accessed:
Reuse terms: CC-BY-4.0
Source terms and attribution ↗Global Heat Flow Data Assessment Group et al. (2024): The Global Heat Flow Database: Release 2024. V. 2026.03. GFZ Data Services. https://doi.org/10.5880/fidgeo.2024.014 Licensed under CC BY 4.0. Wellficent shows parent-level site values and selected metadata; values are not modified.