Phase 1 covers the engineering, construction, and installation of production and transportation facilities required to recover the oil reserves of the field. The development consists of three satellite wellhead protector platforms (WPPs) that will be connected via flowlines to a steel jacket central production platform (CPP). The commercialisation of the gas resource is expected to occur as the second phase, three to nine years following first oil, and will utilise Phase 1 infrastructure with secondary enhancements. The timing of the commencement of gas sales will largely depend on reservoir performance and oil recovery considerations.
Regulatory approvals from the Government of Trinidad and Tobago have been received. The joint venture will be pursuing an aggressive schedule to achieve first oil by the end of calendar year 2004, and the Greater Angostura Field has an estimated production life for both oil and gas between 19 to 24 years.
"With our sanction of the Angostura project, Trinidad and Tobago will become a core development area for BHP Billiton," said Philip Aiken, President and CEO of BHP Billiton Petroleum. "Once production begins, Angostura will be one of the company's largest operated assets. This represents a significant milestone in our Petroleum strategy to build shareholder value by achieving material growth through oil and gas exploration and production. We see further potential in this offshore area and our exploration campaign will continue with further test drilling this year in both Block 2(c) and the adjacent Block 3(a)."
The CPP will have a nameplate production capacity for 100,000 barrels of oil per day. Initially, produced gas will be re-injected to the reservoir to maintain pressures and enhance oil recovery. Oil will be delivered via an 18-inch pipeline to storage and marine loading facilities onshore for export to market. BHP Billiton is the operator of Block 2(c) and holds a 45 percent working interest in the Greater Angostura field. Other partners include TotalFinaElf with a 30 percent interest and Talisman Energy with a 25 percent interest.
BHP Billiton's interest in offshore Trinidad began in 1996 and a gas accumulation was discovered in 1999 with Angostura-1. The oil discovery was made with the Kairi-1 well in 2001, and there have been a total of seven exploration/appraisal wells drilled on Block 2(c).
BHP Billiton has further acreage interest in the area – in 2001 it was awarded a 30% interest and operatorship in the adjacent Block 3(a) together with BG and Talisman, 30% each, and Total Fina Elf, 10%. Exploration drilling is planned for later this calendar year.
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