8/4-1
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
- 8/4-1
- Borehole / source record ID
- 302
- Sector
- Oil and gas
- Derived purpose group
- Exploration
- Operator in source snapshot
- Unocal Norge A/S
- Recorded spud date
- 1977-06-21
- Recorded completion date
- 1977-07-25
- Latitude / longitude (WGS84)
- 57.746666 / 2.999505
- Source-reported measurements
- 2632 m MD · RKB
- Status reported by source
- P&A
- Source accessed
- 2026-10-02
- Source snapshot date
- Not reported / not verified
- Original coordinate reference system
- ED50 / service geometry EPSG:4326
- Drilling facility reported by source
- NORJARL
Company roles reported by source
- Drilling operatorUnocal Norge A/SOpen source record ↗
| Source-reported measurements | Value | Reference |
|---|---|---|
| wlbTotalDepth | 2,632.00 m | RKB |
| wlbFinalVerticalDepth | 2,631.00 m | RKB |
| wlbWaterDepth | 63.00 m | Not reported / not verified |
| wlbBottomHoleTemperature | 90.00 °C | Not reported / not verified |
Norwegian Offshore Directorate — Wellbores ↗
Source accessed:
Reuse terms: review-source-terms
Source terms and attribution ↗Norwegian Offshore Directorate (NOD/SODIR), NLOD 2.0. Normalized by Wellficent.
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 |
|---|---|---|---|
| 8/1-1 | 17.73 km | 2,971 m | Norwegian Offshore Directorate — Wellbores |
| 7/3-1 | 18.36 km | 4,700 m | Norwegian Offshore Directorate — Wellbores |
| 17/10-1 | 33.09 km | 3,591 m | Norwegian Offshore Directorate — Wellbores |
| 8/5-1 | 40.15 km | 2,405 m | Norwegian Offshore Directorate — Wellbores |
| 16/11-1 S | 43.84 km | 3,050 m | Norwegian Offshore Directorate — Wellbores |
| 7/9-1 | 45.71 km | 2,931 m | Norwegian Offshore Directorate — Wellbores |
| 7/8-2 | 46.23 km | 3,006 m | Norwegian Offshore Directorate — Wellbores |
| 17/11-2 | 46.34 km | 2,644 m | Norwegian Offshore Directorate — Wellbores |
| 7/4-3 | 47.54 km | 3,000 m | Norwegian Offshore Directorate — Wellbores |
| 8/3-1 | 47.72 km | 3,015 m | Norwegian Offshore Directorate — Wellbores |
| 7/4-1 | 47.91 km | 3,133 m | Norwegian Offshore Directorate — Wellbores |
| 7/1-3 | 48.13 km | 166 m | Norwegian Offshore Directorate — Wellbores |
Digital well log
SODIR formation tops, drilling-mud samples and well tests on one measured-depth section.
- Total depth
- 2632
- True vertical depth (RKB)
- 2631
- Water depth
- 63
- Bottom-hole temperature
- 90
| Group | Formation | Depth (m MD, RKB) |
|---|---|---|
| GROUP | NORDLAND GP | 88 / 635 |
| GROUP | HORDALAND GP | 635 / 1,452 |
| GROUP | ROGALAND GP | 1,452 / 1,605 |
| FORMATION | BALDER FM | 1,452 / 1,485 |
| FORMATION | SELE FM | 1,485 / 1,496 |
| FORMATION | LISTA FM | 1,496 / 1,585 |
| FORMATION | MAUREEN FM | 1,585 / 1,605 |
| GROUP | SHETLAND GP | 1,605 / 2,114 |
| FORMATION | EKOFISK FM | 1,605 / 1,664 |
| FORMATION | TOR FM | 1,664 / 2,351 |
| GROUP | CROMER KNOLL GP | 2,114 / 2,351 |
| GROUP | BOKNFJORD GP | 2,351 / 2,397 |
| FORMATION | TAU FM | 2,351 / 2,397 |
| GROUP | VESTLAND GP | 2,397 / 2,513 |
| FORMATION | BRYNE FM | 2,397 / 2,513 |
| GROUP | NO GROUP DEFINED | 2,513 / 2,582 |
| FORMATION | SKAGERRAK FM | 2,513 / 2,632 |
| GROUP | ZECHSTEIN GP | 2,582 / 2,632 |
| Depth (m MD, RKB) | Mud density (g/cm³) | Quality flags |
|---|---|---|
| 159 | 1.02 | observation-date-unreported, zero-meaning-unresolved |
| 433 | 1.09 | observation-date-unreported, zero-meaning-unresolved |
| 694 | 1.07 | observation-date-unreported, zero-meaning-unresolved |
| 1388 | 1.19 | observation-date-unreported, zero-meaning-unresolved |
| 1671 | 1.27 | observation-date-unreported, zero-meaning-unresolved |
| 2437 | 1.43 | observation-date-unreported, zero-meaning-unresolved |
| 2632 | 1.49 | observation-date-unreported, zero-meaning-unresolved |
Group tops in offset wells
Group tops below each borehole's own RKB. Not TVD below sea level; deviation and kelly-bushing elevations affect apparent depths.
| Group | 8/4-1 | 8/1-1 | 7/3-1 |
|---|---|---|---|
| NORDLAND GP | 88 | 98 | 95 |
| HORDALAND GP | 635 | 661 | 881 |
| ROGALAND GP | 1452 | 1347 | 1712 |
| SHETLAND GP | 1605 | 1535 | 1882 |
| CROMER KNOLL GP | 2114 | 1899 | 2386 |
| BOKNFJORD GP | 2351 | 2379 | 2598 |
| VESTLAND GP | 2397 | 2606 | 2655 |
| NO GROUP DEFINED | 2513 | 2680 | — |
| ZECHSTEIN GP | 2582 | 2873 | 2696 |
| ROTLIEGEND GP | — | — | 4406 |
| UNDEFINED GP | — | — | 4692 |
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-P031366 | 18.73 km | 66.50 mW/m2 | {"qualityScores":["U1.M3.SXXP-X-"]} |
| R24-P003221 | 62.33 km | 74.00 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.