Tullow Oil strikes oil onshore Kenyan basins

oilfield-vincentlammin-flickrTullow Oil officials confirmed that further drilling can be expected in the Kerio basin in 2015. (Image source: Vincent Lammin/Flickr) UK-based exploration company Tullow Oil has discovered oil at two of its wells in the Great Rift Valley Region of Kenya

Company officials stated that Tullow Oil has found oil in Block 10BB in the Kodos-1 well situated in Kerio Basin and the Ekosowan-1 well located in South Lokichar Basin.

Kodos-1 was drilled to a final depth of 2,500 metres and will be plugged and abandoned for now, added officials.

“Following up on the encouraging hydrocarbon shows at Kodos-1, further drilling in the greater Kerio Basin can be expected during 2015,” the company stated. Tullow Oil has plans to drill a second well Epir-1 in the basin, located 25 km north of Kodos-1 well.

The UK-based company operates Blocks 10BB and 13T in Kenya on a 50-50 basis with the state-owned Africa Oil Corporation. Block 10BB was the first well drilled in the Kerio Basin, which indicated the presence of an active petroleum system. However, reservoirs were mixed quality alluvial sands close to the basin boundary fault at this well location, according to an appraisal report by the company.

Meanwhile, the company also encoutered a 900-metre section of near continuous oil show at the Ekosowan-1 well in Block 10BB. The Ekosowan area is located within the ongoing 3D seismic survey in the South Lokichar Basin.

In addition, Tullow Oil has completed four flow tests at Block 13T in the Twiga-2A well located in South Lokichar Basin. Officials confirmed that they achieved production rates between 150 and 3,270 boepd under natural flow with no depletion. This is reportedly the highest oil production rate witnessed in Kenya so far.

With optimised equipment, the maximum flow potential from the best zone could have increased to around 10,000 bpd demonstrating the reservoir’s high deliverable rate, the company added.

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