By OGJ editors
HOUSTON, June 9 -- Bowleven PLC said its Sapele-1 appraisal sidetrack off Cameroon stabilized at 2,023 b/d of 39.2° gravity oil and 6.47 MMscfd of associated gas on a 56/64-in. choke from the Deep Omicron interval over a 71-m perforated interval.
The well went to 3,634 m true vertical depth, 4,483 m measured depth, in 25 m of water on Block MLHP-5 of the Etinde permit 2 km southeast of the Deep Omicron oil discovery in the original Sapele-1 vertical wildcat. The flow rates are believed commercial, and oil quality and gas-oil ratio are comparable to that encountered in the vertical discovery wellbore, Bowleven said.
The Sapele-1ST well encountered log evaluated net pay conservatively estimated to be 10 m in the Deep Omicron interval based on conventional wireline logs.
The interval tested at the sidetrack correlates on seismic with the equivalent Deep Omicron interval drilled by the original well, which encountered better-developed sands. Sapele-1 had a confirmed oil pressure gradient at Deep Omicron, and oil samples were obtained during logging.
Due to the stratigraphic nature of the Omicron discoveries, further analysis and appraisal is required to delineate the fields and to assess the implications for resource estimates and potential development options. Bowleven said the productivity demonstrated by the Deep Omicron test at Sapele-1ST is a key step forward.
In addition, a test program is ongoing at Sapele-2, drilled to appraise both the Lower and Deep Omicron discoveries, and the results from this will be integral to the process.
The Noble Tommy Craighead jackup is being released as planned after Sapele-1ST testing in 2-3 weeks for mandatory recertification.
Bowleven tests Douala oil, gas off Cameroon
By OGJ editors