NORWAY · WELLBORES · NPDID 173
25/8-1
Exploration · Wildcat · P&A · Oil · Esso Exploration and Production Norway A/S · Balder · PL 027
The lithostratigraphic units 25/8-1 drilled through, shallowest first, with the depth each was met and where it ended. Groups are in bold; the formations within them are indented.
Formation tops
LITHOSTRATIGRAPHY · METRES ALONG THE WELLBORE
| Unit | Level | Part of | Top, m | Base, m |
|---|---|---|---|---|
| Nordland Gp | Group | — | 138 | 750 |
| Utsira Fm | Formation | Nordland Gp | 607 | 716 |
| No Formal Name | Formation | — | 716 | 750 |
| Hordaland Gp | Group | — | 750 | 1,665 |
| Skade Fm | Formation | Hordaland Gp | 750 | 970 |
| No Formal Name | Formation | — | 970 | 991 |
| Skade Fm | Formation | Hordaland Gp | 991 | 1,015 |
| No Formal Name | Formation | — | 1,015 | 1,062 |
| Skade Fm | Formation | Hordaland Gp | 1,062 | 1,093 |
| No Formal Name | Formation | — | 1,093 | 1,662.6 |
| No Formal Name | Formation | — | 1,662.6 | 1,665 |
| Rogaland Gp | Group | — | 1,665 | 1,845.6 |
| Balder Fm | Formation | Rogaland Gp | 1,665 | 1,735.8 |
| Sele Fm | Formation | Rogaland Gp | 1,735.8 | 1,754 |
| Hermod Fm | Formation | Rogaland Gp | 1,754 | 1,763 |
| Sele Fm | Formation | Rogaland Gp | 1,763 | 1,766.7 |
| Lista Fm | Formation | Rogaland Gp | 1,766.7 | 1,776.5 |
| Heimdal Fm | Formation | Rogaland Gp | 1,776.5 | 1,812 |
| Lista Fm | Formation | Rogaland Gp | 1,812 | 1,841.3 |
| Våle Fm | Formation | Rogaland Gp | 1,841.3 | 1,845.6 |
| Shetland Gp | Group | — | 1,845.6 | 1,936 |
| Ekofisk Fm | Formation | Shetland Gp | 1,845.6 | 1,853 |
| Tor Fm | Formation | Shetland Gp | 1,853 | 1,897 |
| Hod Fm | Formation | Shetland Gp | 1,897 | 1,915 |
| Blodøks Fm | Formation | Shetland Gp | 1,915 | 1,923 |
| Hidra Fm | Formation | Shetland Gp | 1,923 | 1,936 |
| Cromer Knoll Gp | Group | — | 1,936 | 1,981 |
| Viking Gp | Group | — | 1,981 | 1,987 |
| Draupne Fm | Formation | Viking Gp | 1,981 | 1,987 |
| Statfjord Gp | Group | — | 1,987 | 2,158 |
| No Group Defined | Group | — | 2,158 | 2,316.5 |
| Undefined Gp | Group | — | 2,316.5 | 2,606 |
Core cut in each unit
METRES CORED · AS THE DIRECTORATE FILES IT
- Rogaland Gp92.4
- Sele Fm22.5
- Lista Fm22.3
- Balder Fm20.1
- Undefined Gp16.5
- Heimdal Fm14.2
- Hermod Fm9
- Våle Fm4.3
- Ekofisk Fm1.5
- Shetland Gp1.5
Biostratigraphy reports and logs behind the picks
- NPD Paper No.28 Interpreted Lithology log Well 25 8 1pdf · 1.4 MB
- NPD Paper No.28 Log Correlation chart Profile NE-SW Well 25 8 1pdf · 408 KB
- Completion logpdf · 1.5 MB
About this data
Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Tops are the Directorate's lithostratigraphy for the wellbore, in metres along the wellbore from the kelly bushing. A unit filed as No Formal Name or No Group Defined is the Directorate's placeholder where nothing is named.
Developers: this page as JSON is GET /v1/data/norway/wells/173, documented in the API reference.