Tullow, Africa Oil find more oil in Kenya’s Lokichar basin

Two exploration wells drilled on Block 10BB in northern Kenya—Amosing-1 and Ewoi-1—have resulted in the discovery of two new oil fields, according to Africa Oil Corp. and operator Tullow Oil PLC. These latest exploratory wells continue the partners’ success in the South Lokichar basin (OGJ Online, Aug. 1, 2013).

Based on results of drilling, wireline logs, and samples of reservoir fluid, the Amosing-1 well has intersected potential net oil pay of 160-200 m, “significantly exceeding predrill expectations,” Africa Oil said. Amosing is 7 km southwest of the previously announced Ngamia discovery along the western basin bounding fault trend commonly referred to as the “string of pearls” (OGJ Online, July 5, 2012).

On the eastern side of the basin known as the rift flank play, the Ewoi-1 well has found potential net pay of 20-80 m and has continued to derisk the basin flank play opened up by the Etuko-1 well last year 4 km to the east.

Following completion of logging operations, the wells will be suspended for future flow testing which will confirm the net pay counts, Africa Oil said.

These two rigs will mobilize to drill the Emong-1 prospect (formerly called Ngamia West), and the Twiga South-2 appraisal well, both on Block 13T.

Africa Oil and Tullow hold equal interests in both discoveries.

Tullow said, “As a result of these latest successes and recently reported discoveries at Ekales-1 and Agete-1, Tullow has updated its estimate of discovered resources in this basin to over 600 million bbl of oil." Tullow added that it believes the overall potential for the basin, which will be assessed more fully over the next 2 years, is in excess of 1 billion bbl of oil.

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