31/6-8

Exploration · Appraisal · Suspended · Oil/gas · Norsk Hydro Produksjon AS · Troll · PL 085

The lithostratigraphic units 31/6-8 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	—	325	537.5
Hordaland Gp	Group	—	537.5	985
Rogaland Gp	Group	—	985	1,255.5
Balder Fm	Formation	Rogaland Gp	985	1,112
Sele Fm	Formation	Rogaland Gp	1,112	1,224
Lista Fm	Formation	Rogaland Gp	1,224	1,255.5
Shetland Gp	Group	—	1,255.5	1,371
Hardråde Fm	Formation	Shetland Gp	1,255.5	1,264
Undifferentiated	Formation	—	1,264	1,371
Cromer Knoll Gp	Group	—	1,371	1,412
Rødby Fm	Formation	Cromer Knoll Gp	1,371	1,385
Åsgard Fm	Formation	Cromer Knoll Gp	1,385	1,412
Viking Gp	Group	—	1,412	1,985
Draupne Fm	Formation	Viking Gp	1,412	1,485
Heather Fm	Formation	Viking Gp	1,485	1,507
Sognefjord Fm	Formation	Viking Gp	1,507	1,661
Heather Fm	Formation	Viking Gp	1,661	1,705
Fensfjord Fm	Formation	Viking Gp	1,705	1,927
Krossfjord Fm	Formation	Viking Gp	1,927	1,965
Heather Fm	Formation	Viking Gp	1,965	1,985
Brent Gp	Group	—	1,985	2,007.5
Dunlin Gp	Group	—	2,007.5	2,138
Drake Fm	Formation	Dunlin Gp	2,007.5	2,025
Cook Fm	Formation	Dunlin Gp	2,025	2,138

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 · 303 KB
WDSS completion logpdf · 197 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.

Developers: this page as JSON is GET /v1/data/norway/wells/466, documented in the API reference.