25/4-13 A

Exploration · Appraisal · P&A · Oil/gas · Aker BP ASA · Alvheim · PL 203

The lithostratigraphic units 25/4-13 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	—	151	785
No Formal Name	Formation	—	151	364
Utsira Fm	Formation	Nordland Gp	364	785
Hordaland Gp	Group	—	785	2,294
No Formal Name	Formation	—	785	1,284
Grid Fm	Formation	Hordaland Gp	1,284	1,325
No Formal Name	Formation	—	1,325	2,294
Rogaland Gp	Group	—	2,294	2,641
Balder Fm	Formation	Rogaland Gp	2,294	2,431
Sele Fm	Formation	Rogaland Gp	2,431	2,493
Lista Fm	Formation	Rogaland Gp	2,493	2,541
Heimdal Fm	Formation	Rogaland Gp	2,541	2,641

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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