LONDON -- The Mahogany-2 well, which is being drilled to appraise the Jubilee field offshore Ghana, flowed at a test rate of 5,200 b/d of 36° API gravity crude oil and approximately 5.3 MMcf/d of associated natural gas, according to Tullow Oil.
The drillshipSonga Saturn drilled the well to 3,443 m (11,296 ft) TD in 1,080 m (3,543 ft) water depth. A single zone covering an interval of 17 m (56 ft) was tested through a 40/64-in. choke resulting in a flowing tubing head pressure of 1,540 psi.
These results confirm that the Turonian turbidite reservoirs of the Jubilee field are highly productive and validates the geological and reservoir model, Tullow says. The company will now acquire oil samples to conduct comprehensive refinery assays before the well is suspended as a potential development well and the rig released.
Development planning for the Jubilee field is ongoing and Tullow has secured the deepwater rigsBlackford Dolphin and the Eirik Raude for an extended program of appraisal, development, and exploration drilling in both the West Cape Three Points and the Deepwater Tano licenses. This program is scheduled to begin later this year.
"These excellent well test results are in line with our expectations, confirming the high quality reservoir characteristics and supporting our view that the completed Jubilee production wells should be capable of flowing at rates in excess of 20,000 b/d of oil," says Aidan Heavey, chief executive of Tullow. "These results support the decision by the Jubilee partnership to progress with a fast track appraisal and development program targeting first oil in 2010."