Kosmos Energy has conducted a second drillstem test of the Mahogany-2 appraisal well in the Jubilee Field offshore the Republic of Ghana. The well tested at a flow rate of 4,448 barrels of oil per day (BOPD) of 39-degree API gravity crude and approximately 5.1 million cubic feet per day of associated natural gas on a 36/64-inch choke with a flowing tubing pressure of 1,936 pounds per square inch during a second drillstem test. The test encompassed a 23-meter perforated interval representing 40% of the oil-bearing pay in the well’s upper sands. The flow rate was limited by equipment and facilities. The drillstem test confirms that a Jubilee production well completed in the upper sands should be capable of flowing more than 20,000 BOPD when completed with 5 1/2-inch tubing.
Kosmos and its field partners in the Jubilee Field decided to take advantage of the opportunity that the “Songa Saturn” drillship had remained on location and could perform a second drillstem test. The first drillstem test, conducted in June, encompassed a single 17-meter interval in the well’s lower zone.
“This drillstem test of the Mahogany-2 well’s upper zone further confirms that the Jubilee Field’s reservoirs are sizable and highly productive, and validates our geological model,” said James C. Musselman, Kosmos Chairman and Chief Executive Officer. “We are pushing ahead to achieve first oil production from this world-class field in 2010. Our ultimate objective is to bring the project on line as quickly and prudently as possible for the benefit of the people of Ghana.”
Kosmos Energy is operator of the deepwater West Cape Three Points Block in which the company holds a 30.875% interest. Anadarko WCTP Company, an affiliate of Anadarko Petroleum Corporation, has a 30.875% interest; Tullow Ghana Limited, an affiliate of Tullow Oil plc, has a 22.896% interest; the E.O. Group has a 3.5% interest; and Sabre Oil & Gas Holdings has a 1.854% interest in the block. Ghana National Petroleum Corporation (GNPC), which has a 10% participating interest in the project, will be carried through the exploration and development phases.
The West Cape Three Points Block comprises 1,761 square kilometers (435,200 acres) in water depths ranging from 50 meters (165 feet) to 1,800 meters (5,900 feet). The Jubilee Field discovery well, Mahogany-1, is located 63 kilometers from the Ghanaian coastline and 132 kilometers southwest of the port city of Takoradi and is situated in the Tano Basin.