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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 63 (1979)

Issue: 3. (March)

First Page: 479

Last Page: 480

Title: Statfjord Previous HitFieldNext Hit, Previous HitNorthNext Hit Previous HitSeaNext Hit Giant: ABSTRACT

Author(s): R. H. Kirk

Article Type: Meeting abstract

Abstract:

Statfjord, the largest single oil Previous HitfieldNext Hit in the Previous HitNorthNext Hit Previous HitSeaNext Hit, is located on the United Kingdom-Norwegian boundary between 61 and 61°30^primeN lat. About 11% of the Previous HitfieldNext Hit extends into United Kingdom waters. Its discovery, in March 1974, was based on interpretation of seismic reflection surveys and extrapolation of a productive regional trend. Two principle sandstone reservoirs, Middle Jurassic Brent and Lower Jurassic to Upper Triassic Statfjord, contain reserves on the order of 3 billion bbl within a productive area of approximately 20,000 acres (8,094 ha.). Reservoir properties are excellent with permeabilities in darcys. The Previous HitfieldNext Hit extends northeastward 15.5 mi (24.9 km) and averages 2.5 mi (4 km) in width.

End_Page 479------------------------------

Titled Jurassic fault blocks from the primary hydrocarbon trap at Statfjord as throughout the East Shetland basin. Statfjord Previous HitfieldNext Hit is a structural/stratigraphic trap formed by westward tilting and erosion of a major fault block. Brent deltaic sandstones and underlying Statfjord fluvial to continental sandstones are truncated by mid-late Kimmerian unconformities on the crest and east flank of the structure, which is marked by a major fault system. Overlying and onlapping Jurassic and Cretaceous shales seal the trap. Organically rich Upper Jurassic shales provide an excellent oil source. Reservoirs have separate oil/water contacts. Normal faulting separates Statfjord Previous HitfieldNext Hit from the Brent Previous HitfieldTop on the southwest.

Joint Norwegian and United Kingdom development utilizes "condeep" type gravity platforms and initial offshore loading. Development drilling from Statfjord "A" platform, towed to the location in May 1977, began in late 1978. First production is expected late in 1979.

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Copyright 1997 American Association of Petroleum Geologists