NORWAY · WELLBORES · NPDID 1989

30/9-B-18

Development · Observation · Plugged · Not applicable · Norsk Hydro Produksjon AS · Oseberg · PL 079

The lithostratigraphic units 30/9-B-18 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	—	167	885.5
Undifferentiated	Formation	—	167	707
Utsira Fm	Formation	Nordland Gp	707	885.5
Hordaland Gp	Group	—	885.5	2,614
Rogaland Gp	Group	—	2,614	3,061.5
Balder Fm	Formation	Rogaland Gp	2,614	2,735
Sele Fm	Formation	Rogaland Gp	2,735	2,868
Lista Fm	Formation	Rogaland Gp	2,868	3,045
Våle Fm	Formation	Rogaland Gp	3,045	3,061.5
Shetland Gp	Group	—	3,061.5	3,257.5
Hardråde Fm	Formation	Shetland Gp	3,061.5	3,257.5
Viking Gp	Group	—	3,257.5	3,682.5
Draupne Fm	Formation	Viking Gp	3,257.5	3,309
Heather Fm	Formation	Viking Gp	3,309	3,682.5
Brent Gp	Group	—	3,682.5	3,941
Tarbert Fm	Formation	Brent Gp	3,682.5	3,695
Ness Fm	Formation	Brent Gp	3,695	3,818
Etive Fm	Formation	Brent Gp	3,818	3,824.5
Rannoch Fm	Formation	Brent Gp	3,824.5	3,830.5
Oseberg Fm	Formation	Brent Gp	3,830.5	3,941
Dunlin Gp	Group	—	3,941	3,980
Drake Fm	Formation	Dunlin Gp	3,941	3,980

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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