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Friday, December 9, 2022
In its most recent operational update, VAALCO Energy reports that it brought the North Tchibala 2H-ST well online in early November. The well flowed at a low, controlled rate to allow for cleanup and to minimize negative impact to the completion.
Through early December, the well has flowed, but with temporary interruptions for operational activity and shut-ins for pressure build up analysis with the following results. During this time, the well produced approximately 8,000 gross barrels of oil, or about 275 gross barrels of oil per day (bopd).
About 33% of injected completion fluid was recovered and cleanup is continuing with pressure transient analysis indicating the lower stimulated zones may not be contributing.
The company is conducting chemical analysis on oil recovered from the well that will help determine if all zones that were fracture stimulated are producing. Post-frac modeling suggests that the well is capable of producing rates at or above 1,500 gross bopd.
In related news, the company states that on December 4, the first lifting from the new FSO “TELI” was successfully completed at the same time that the final remaining volumes from the Nautipa FPSO were removed.
George Maxwell, Chief Executive Officer, commented, “We continue to monitor the fluids flowing from the North Tchibala 2H-ST well to better understand its results. During cleanup, the well has been producing about 275 gross bopd, however our post-frac modeling indicates that the well is capable of producing rates in excess of 1,500 gross bopd. The well is not cleaning up as expected, with only about 33% of completion fluid recovered. We are continuing to gather information to understand why the lower stimulated zones may not yet be contributing any meaningful production. We will continue to monitor the well and plan to provide additional information to the market once we have analyzed all the data.”
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