30/9-12 A

Exploration · Appraisal · Suspended · Oil · Norsk Hydro Produksjon AS · Oseberg · PL 104

The lithostratigraphic units 30/9-12 A 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	—	129	842
Utsira Fm	Formation	Nordland Gp	646	842
Hordaland Gp	Group	—	842	2,088
Skade Fm	Formation	Hordaland Gp	980	1,012
No Formal Name	Formation	—	1,012	1,353
Grid Fm	Formation	Hordaland Gp	1,353	1,385
No Formal Name	Formation	—	1,385	2,088
Rogaland Gp	Group	—	2,088	2,422
Balder Fm	Formation	Rogaland Gp	2,088	2,176.5
Sele Fm	Formation	Rogaland Gp	2,176.5	2,339
Lista Fm	Formation	Rogaland Gp	2,339	2,417
Våle Fm	Formation	Rogaland Gp	2,417	2,422
Shetland Gp	Group	—	2,422	2,637.5
Hardråde Fm	Formation	Shetland Gp	2,422	2,637.5
Cromer Knoll Gp	Group	—	2,637.5	2,692
Rødby Fm	Formation	Cromer Knoll Gp	2,637.5	2,675
Sola Fm	Formation	Cromer Knoll Gp	2,675	2,676
Mime Fm	Formation	Cromer Knoll Gp	2,676	2,691
Åsgard Fm	Formation	Cromer Knoll Gp	2,691	2,692
Viking Gp	Group	—	2,692	2,868.5
Draupne Fm	Formation	Viking Gp	2,692	2,734
Heather Fm	Formation	Viking Gp	2,734	2,765
Intra Heather Fm Ss	Formation	Viking Gp	2,765	2,781
Heather Fm	Formation	Viking Gp	2,781	2,868.5
Brent Gp	Group	—	2,868.5	3,007
Tarbert Fm	Formation	Brent Gp	2,868.5	2,886.5
Ness Fm	Formation	Brent Gp	2,886.5	2,963
Undifferentiated	Formation	—	2,963	3,007
Dunlin Gp	Group	—	3,007	3,061
Drake Fm	Formation	Dunlin Gp	3,007	3,061

Core cut in each unit

METRES CORED · AS THE DIRECTORATE FILES IT

The cores themselves, with their intervals →

Biostratigraphy reports and logs behind the picks

Composite logpdf · 411 KB
WDSS completion logpdf · 186 KB
Completion report and logpdf · 8.4 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/1770, documented in the API reference.