West Australian Petroleum Pty. Ltd. (Wapet) plans to develop two small oil fields on Australia's Northwest Shelf simultaneously for $30 million (Australian).

Wapet, a combine of Chevron Asiatic Oil Co., Shell Development Australia Pty. Ltd., and Texaco Oil Development Co. 25.7% each, Ampol Exploration Ltd. 12.9%, and Western Mining Corp. Ltd. 10%, last week declared Cowie and Yammaderry oil fields commercial.

The two fields are to go on stream in February 1991 at a combined rate of about 6,500 b/d of 49 gravity oil. Wapet estimates a 4 year production life and pegs each field's reserves at 4 million bbl of oil.

Yammaderry was discovered in July 1988 and Cowie in December 1989. Both are single well fields.

Site is immediately southwest of Wapet's producing Saladin oil field and 20 km north of Onslow, Western Australia (see map, OGJ, Mar. 12, p. 21).

Plans call for Wapet to install in each field a single well monopod platform with helideck. Water depth is 30 ft at Yammaderry, 39 ft at Cowie.

Each field will get one development well to be directionally drilled to tap Cretaceous Flacourt pay at about 4,090 ft.

Wapet will install individual flow lines to connect the wells to its existing Saladin oil treating facilities on Thevenard Island. A pipeline from Thevanard will move treated crude to an offshore mooring/tanker loading buoy.

Copyright 1990 Oil & Gas Journal. All Rights Reserved.

WAPET TO DEVELOP TWO SMALL NW SHELF FINDS

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