NAIROBI, Kenya, Feb 21 – British oil exploration firm Tullow Oil Plc has successfully completed a testing program for the Twiga South-1 well with results showing that it has a cumulative flow rate of 2,812 barrels of oil per day (bopd) from three reservoir zones.
In a statement to media houses, the firm confirmed that with optimised equipment, these flow rates would increase to a cumulative rate of around 5,200 bopd.
Tullow previously stated that Drill Stem Tests (DST) 3 and 4A flowed at a cumulative rate of 2,351 bopd and can now announce that the fifth and final DST flowed at a rate of 461 bopd.
Two additional zones were tested in the tight reservoir rock at the base of the well and, as anticipated, both produced at sub-commercial rates, but confirmed the presence of movable oil.
These results provide encouragement for the forthcoming testing program at Ngamia-1A, Block 10BB, where four zones are planned to be tested using the Weatherford 804 rig.
Testing activities are expected to commence in March and complete by the end of May.
Tullow has a 50 percent operated interest in the Twiga South-1 well, Block 13T, with Africa Oil holding the remaining 50 percent interest.