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Geological Society, London, Memoirs; 1991; v. 14; p. 175-182;
DOI: 10.1144/GSL.MEM.1991.014.01.22
© 1991 Geological Society of London

Part 2: The Viking Graben

The Ninian Field, Blocks 3/3 & 3/8, UK North Sea

E. J. Van Vessem & T. L. Gan

Chevron UK Ltd, 2 Portman Street, London W1H 0AN, UK

The Ninian Field, located in the northern North Sea, lies in the East Shetland Basin on the west side of the Viking Graben. The field straddles Blocks 3/3 and 3/8 and is developed under a unitization agreement with Chevron UK Limited as operator. The structure is a westward tilted fault block. The estimated original oil-in-place contained in the marine-deltaic sandstones of the Middle Jurassic Brent Group, is 2920 MMBBL, of which an estimated 35 to 40% is recoverable. The oil is a paraffinic-naphthenic type with an API gravity of 36°. The field development consists of three fixed platforms with a total of 109 drilling slots. The natural drive in the field is negligible so that water flooding is required. The production of the Ninian Field started in December 1978 and reached a peak of 315 000 BOPD in the summer of 1982. At the end of 1988 over 811 MMBBL had been produced.