--> Abstract: Paleozoic Plays on the Norwegian Shelf (North Sea and mid-Norway), by S. Berstad, K. Aubert, R. J. Steel, and A. Yukler; #90987 (1993).

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BERSTAD, SVERRE and KRISTIN AUBERT, Nopec a.s, Norway; RON J. STEEL, University of Bergen, Norway; and ARIF YUKLER, IBA Inc., Dallas, TX

ABSTRACT: Paleozoic Plays on the Norwegian Shelf (North Sea and mid-Norway)

Upper Paleozoic plays have been established in the Moray Firth Basin where Devonian lacustrine source rock (Beatrice) and Devonian/Carboniferous reservoirs (Buchan & Claymore) have been established. This together with the presence of Permian source rock in East Greenland (Ravnefjell Fm.), provides a basis for testing such plays on the Norwegian sector. Nopec-acquired seismic data, together with maturation estimates, show several such play possibilities.

The Sele High contaIns Devonian rotated fault-blocks with unconformity traps which may be sourced from underlying Devonian and/or mature Jurassic shales in the Ling Graben. Lower Paleozoic shales from southern Sweden and the Oslo regions provide potential source rocks for Paleozoic reservoirs in the Farsund Basin. In adjacent areas both Jurassic sandstones and Zechstein carbonate traps may be sourced by Paleozoic or Jurassic shales. Off mid-Norway a thin sequence of Permian carbonates has been drilled by a single well on the Nordland Ridge, but very little is known about the pre-salt (Middle-Late Triassic) succession. It is probable that Permian source rock, such as found on East Greenland, also exists in this area as it was part of the same basin prior to the Tertiary separation of N rway and Greenland.

AAPG Search and Discovery Article #90987©1993 AAPG Annual Convention, New Orleans, Louisiana, April 25-28, 1993.