A combine of Mobil Corp. and Nigeria's state oil company has scheduled a large natural gas liquids recovery project for a field off Nigeria.
Mobil Producing Nigeria and Nigerian National Petroleum Corp. (NNPC) let an engineering, procurement, and construction contract for development of the project to recover 350 million bbl of NGL from Oso field.
The field, which has been producing condensate since 1992, is on Oil Mining Lease 70, about 35 miles southwest of Mobil's Qua Iboe terminal in Nigeria's Akwa Ibom state.
The contract, valued at about $650 million, went to lead contractor ABB Lummus Crest & Associates, along with JGC Corp., Bouygues Offshore, and a joint venture of Spie Batignolles and Fougerolle. Total project costs are estimated at $800 million.
Oso field's present gross production is more than 110,000 b/d. When the Mobil-NNPC project is complete in 1998, peak gross production is to climb to an estimated 50,000 b/d of NGL: 27,000 b/d of propane, 14,000 b/d of butane, and 9,000 b/d of pentane plus.
The project calls for construction of an offshore platform to extract NGL and inject processed gas into the Oso reservoir. NGL will move through a 42 mile pipeline to Bonny Island in Rivers stat. There, liquids will be fractionated into propane, butane, and pentane plus. Export terminal facilities will include 700,000 bbl each of refrigerated storage for propane and butane and 300,000 bbl of storage for pentane plus.
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