31/4-11

Exploration · Wildcat · P&A · Oil/gas · Norsk Hydro Produksjon AS · Brage · PL 055

The lithostratigraphic units 31/4-11 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	—	209	802
Utsira Fm	Formation	Nordland Gp	782.5	802
Hordaland Gp	Group	—	802	1,725
Rogaland Gp	Group	—	1,725	2,019
Balder Fm	Formation	Rogaland Gp	1,725	1,777
Sele Fm	Formation	Rogaland Gp	1,777	1,820
Lista Fm	Formation	Rogaland Gp	1,820	1,980
Våle Fm	Formation	Rogaland Gp	1,980	2,019
Shetland Gp	Group	—	2,019	2,098
No Formal Name	Formation	—	2,019	2,098
Cromer Knoll Gp	Group	—	2,098	2,130
No Formal Name	Formation	—	2,098	2,130
Viking Gp	Group	—	2,130	2,644
Draupne Fm	Formation	Viking Gp	2,130	2,201
Sognefjord Fm	Formation	Viking Gp	2,201	2,233
Heather Fm	Formation	Viking Gp	2,233	2,351
Fensfjord Fm	Formation	Viking Gp	2,351	2,426
Heather Fm	Formation	Viking Gp	2,426	2,521.5
Krossfjord Fm	Formation	Viking Gp	2,521.5	2,538
Heather Fm	Formation	Viking Gp	2,538	2,644
Brent Gp	Group	—	2,644	2,785
Tarbert Fm	Formation	Brent Gp	2,644	2,654
Ness Fm	Formation	Brent Gp	2,654	2,697
No Formal Name	Formation	—	2,697	2,785
Dunlin Gp	Group	—	2,785	3,178
Drake Fm	Formation	Dunlin Gp	2,785	2,957
Cook Fm	Formation	Dunlin Gp	2,957	2,985
Amundsen Fm	Formation	Dunlin Gp	2,985	3,178
Statfjord Gp	Group	—	3,178	3,271

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

Completion logpdf · 8.8 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/4147, documented in the API reference.