31/2-2 R

Exploration · Appraisal · P&A · Oil/gas · A/S Norske Shell · Troll · PL 054

The lithostratigraphic units 31/2-2 R 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	—	355	650
Hordaland Gp	Group	—	650	1,124
No Formal Name	Formation	—	650	703
No Formal Name	Formation	—	703	1,124
Rogaland Gp	Group	—	1,124	1,374
Balder Fm	Formation	Rogaland Gp	1,124	1,205
Sele Fm	Formation	Rogaland Gp	1,205	1,303
Lista Fm	Formation	Rogaland Gp	1,303	1,374
Shetland Gp	Group	—	1,374	1,424
Cromer Knoll Gp	Group	—	1,424	1,469.5
Rødby Fm	Formation	Cromer Knoll Gp	1,424	1,431
Åsgard Fm	Formation	Cromer Knoll Gp	1,431	1,469.5
Viking Gp	Group	—	1,469.5	1,985
Draupne Fm	Formation	Viking Gp	1,469.5	1,544.5
Sognefjord Fm	Formation	Viking Gp	1,544.5	1,665
Heather Fm	Formation	Viking Gp	1,665	1,700
Fensfjord Fm	Formation	Viking Gp	1,700	1,848
Krossfjord Fm	Formation	Viking Gp	1,848	1,961
Heather Fm	Formation	Viking Gp	1,961	1,985
Brent Gp	Group	—	1,985	2,070
Dunlin Gp	Group	—	2,070	2,360
Drake Fm	Formation	Dunlin Gp	2,070	2,162
Cook Fm	Formation	Dunlin Gp	2,162	2,202
Amundsen Fm	Formation	Dunlin Gp	2,202	2,232.5
Johansen Fm	Formation	Dunlin Gp	2,232.5	2,344
Amundsen Fm	Formation	Dunlin Gp	2,344	2,360
Statfjord Gp	Group	—	2,360	2,500
Hegre Gp	Group	—	2,500	2,600

Biostratigraphy reports and logs behind the picks

Composite logpdf · 423 KB

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.

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