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Sedimentology of the upper Åre - lower Tilje formations with emphasis on lateral variations based on selected wells at the Halten Terrace, Mid-Norway.
Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Petroleum Engineering and Applied Geophysics.
2014 (English)MasteroppgaveStudent thesis
Abstract [en]

Seven core descriptions covering the Top Åre Formation/Base Tilje Formation transition were made from the following Fields and wells: the Smørbukk Field (6506/12-K-3H, 6506/11-5 S and 6506/11-4 ST2), the Lavrans Field (6406/2-1 and 6406/2-4 SR) and the Njord Field (6407/7-1 S and 6407/7-4). As a result of the core descriptions: • Seven facies associations (FA Å1-Å7) from the observed upper Åre Formation were interpreted. • Five facies associations (FA T1-T5) from the observed lower Tilje Formation were interpreted. • Three major erosive surfaces were interpreted and correlated in the vicinity of or at the Top Åre Formation/Base Tilje Formation transition surface. Eleven wells were used for wireline log correlation of the Top Åre Formation/Base Tilje Formation transition surface, six of these wells were the same ones used for the core description, with the exception of the Smørbukk 6506/11-4 ST2 well, since it did not have wireline logs that covered the area of interest. The rest of the wells were picked from field and discovery wells that penetrated both the Tilje and °Are Formation, between the wells used in the core description. Linnorm Discovery (6406/9-2 and 6406/9-1), Spinell Discovery (6407/4-1), Noatun Discovery (6407/7-8) and the Hyme Field (6407/8-5 S). As a combined result of the core description and the wireline log: • The erosive surfaces seen in the core description were recognised in wireline logs. • Facies associations from the core descriptions were linked with corresponding wireline log response. • Clear differences in the interpreted upper Åre Formation are seen from the Smørbukk and Lavarans Field compared to the Njord Field. • The Top Åre Formation/Base Tilje Formation transition surface were correlated between the chosen wells.

Place, publisher, year, edition, pages
Institutt for geologi og bergteknikk , 2014. , 102 p.
URN: urn:nbn:no:ntnu:diva-24513Local ID: ntnudaim:10500OAI: diva2:712627
Available from: 2014-04-15 Created: 2014-04-15 Last updated: 2014-04-15Bibliographically approved

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