Bu Hasa upgrade takes shape

06 September 2002

About eight companies are understood to have been prequalified for the engineering, procurement and construction (EPC) contract covering the Bu Hasa production upgrade facilities and reservoirs development project in Abu Dhabi (MEED 26:7:02).

The prequalifiers include Italy's Snamprogetti, Paris-based Technip-Coflexip, with the local National Petroleum Construction Company, Chiyoda Corporation and JGC Corporation, both of Japan, and Fluor Daniel, Kellogg Brown & Root, Foster Wheeler and Bechtel, all US.

The estimated $300 million-350 million project is expected to be tendered in November by Abu Dhabi Onshore Oil Operations (Adco), following the completion of a re-engineering study by Snamprogetti for the new facilities.

The project is effectively an expanded version of the surface upgrade and gas reinjection schemes, which Adco tendered separately.

The scope of works on the 32-month contract includes the construction of a new degasification plant with nameplate capacity of 730,000 barrels a day (b/d) and the replacement of the existing two-phase gas separators of 50,000 b/d each with four new three-phase separators of 120,000 b/d each. The project will also entail the installation of facilities for the reinjection of 95 million cubic feet a day of gas and 120,000 b/d of water into the G, F and D reservoirs (MEED 19:7:02; 1:3:02)

The project will tackle a rising water cut and falling reservoir pressure at Bu Hasa. Another aim of the project is the utilisation of associated gas produced at the onshore field.

Further work is planned at Bu Hasa. Abu Dhabi Gas Industries Company (Gasco) has invited companies to express interest by the end of August for an EPC contract which covers the upgrade and modification of its own gas-gathering facilities at the onshore field. Estimated to cost $20 million-25 million, the contract will cover the four boot-blower stations at plant 1. A tender is expected to be issued in November.

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