The Tweneboa-3 well was drilled with two deviated boreholes to test separate areas of the Tweneboa Field. The first leg was drilled to calibrate the potential of an area that had a weak seismic response. This leg encountered approximately 9 meters (29 feet) of gas-condensate pay, which was in line with expected results. The well was then sidetracked 550 meters (1,808 feet) west, targeting an area of strong seismic response. This second leg encountered a gross vertical reservoir interval of approximately 65 meters (214 feet), penetrating net gas-condensate pay of 34 meters (112 feet) in high-quality stacked reservoir sandstones in two zones.
The Tweneboa-3 well is located 12 km (7.5 miles) southeast of the Tweneboa-1 discovery well. The Tweneboa-3 well was drilled by the “Deepwater Millennium” dynamically positioned drillship to a total depth of 3,906 meters (12,816 feet) in a water depth of 1,601 meters (5,253 feet). The well will be suspended for potential future use in field development once drilling operations have been completed. Subsequently, the drillship will remain on the Deepwater Tano Block to drill the top-hole section of the Tweneboa-4 appraisal well and suspend it. Then the drillship will drill the Enyenra-2A well, which will appraise the Owo-1 discovery well.
“The Tweneboa-3 well was a significant stepout well in a very large stratigraphic trap. Producible gas-condensate in high-quality reservoirs at this location gives us confidence in the Greater Tweneboa Area’s commercial potential,” said Brian F. Maxted, Kosmos President and Chief Executive Officer. “We will now evaluate development options for the Tweneboa and Enyenra fields.”
Source: Press release
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