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Case History 7 Shallow 3-D Seismic and a 3-D Borehole Profile at Ekofisk Field

John A. Dangerfield
John A. Dangerfield
Phillips Petroleum Company
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January 01, 2011


Ekofisk field in the Norwegian North Sea was discovered in 1969 but after more than 20 years of production much remains to be understood (Sulak,1990). This case history describes some of the 3-D seismic work carried out at Ekofisk field by the Phillips Licence 018 Group of Companies: a short offset 3-D to image the very shallow layers, a normal surface seismic 3-D especially processed for shallow data, and a 3-D borehole profile, shot to image the crest of the field beneath a gas cloud.

Figure 14-7-1 shows the areas covered by the various 3-D surveys. It also shows the reservoir area that is obscured from normal seismic view by gas in the overlying sediments.

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AAPG Memoir

Interpretation of Three-Dimensional Seismic Data

Alistair R. Brown
Alistair R. Brown
Consulting Reservoir Geophysicist
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American Association of Petroleum Geologists
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Publication date:
January 01, 2011




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