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Thursday, November 6, 2014
The interpretation of 2D seismic over Block 11A in Kenya has revealed the presence of several viable leads according to one of the block’s partners, ERHC Energy Inc. The company said some of the leads contain closures of up to 20 sq km.
BGP was contracted by ERHC and the block’s operator, Cepsa, to acquire the 1,086.6 km of 2D seismic.
“The possibility of existence of stacked reservoirs, as seen in the Lokichar basin, could be a significant factor in computation of field volumetrics associated with these closures,” said Dr. Peter Thuo, General Manager of ERHC Kenya Ltd. “Completion of the ongoing detailed seismic interpretation is expected to mature these leads into drillable prospects.”
Leads of similar play types, such as the ones associated with major basin-boundary faults, have been successfully tested in the Lokichar Basin, with reserves of producing more than 600 million barrels of oil in place to date. Other significant proven fields in the region include the Muglad and Melut basins in the South Sudan with 3 billion and 2 billion barrels of oil respectively, and the Albertine Basin in Uganda with 1.7 billion barrels of oil in place.
The full tensor gravity gradiometry (FTG) survey conducted earlier on the block identified two separate basins, Anam and Tarach, which cover 1,600 sq km to the west of block 11A and 2,500 sq km to east, respectively. The basins are estimated to contain up to six to seven kilometers of sediments. ERHC said in a statement that based on the analogy with the Lokichar basin, burial history is sufficient to generate commercial amounts of liquid hydrocarbons.
Bell Geospace acquired over 12,000 sq km of FTG data in the block, on behalf of the contracting parties, during the fourth quarter of 2013. The FTG results enabled the optimization of the 2D seismic program layout, designed to image the subsurface structural features within the two basins.
ERHC holds a 35% interest in Block 11A after farming out a 55% stake to Cepsa Kenya Ltd.
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