Kenya_Block_1

Block 1

Working interest
80%
Operator
EAX*
Work programme Seismic acquisition and interpretation

*  EAX is a wholly owned subsidiary of Afren Plc

Background
Block 1 is on the western margin of the Mandera-Lugh Basin in north-eastern Kenya, bordering both Somalia and Ethiopia, where it is connected to the Ogaden Basin. The Upper Triassic and Jurassic formations that have been identified are considered to be the primary zones of oil prospectivity. An oil seep discovered by the Tarbaj well in the south-west corner of the block confirms the presence of hydrocarbons. Analogous data with the Ogaden Basin also suggests there may be other potential source rocks and reservoirs. The Bur Mayo and the Kalicha-Seir formations in the Mandera-Lugh basin appear comparable to the Lower and Upper Hamanlei (Jurassic) formations in the Ogaden Basin. If analogous, these formations should have high total organic content (TOC) source rocks and good quality reservoirs. In 2013, we concluded the interpretation of 1,900 km of 2D seismic, which identified leads and prospects and a number of new play concepts. Many of these prospects have successful analogues in the Ethiopian sector of the basin immediately north of Block 1. The new data set has also enhanced our view of the oil prospectivity in the south of this large frontier block.

Block 1 is located on the western margin of the Mandera-Lugh basin in north-eastern Kenya bordering both Somalia and Ethiopia, where it is connected to the Ogaden basin. The Upper Triassic and Jurassic formations that have been identified are considered to be the primary zones of oil prospectivity. An oil seep close to the Tarbaj-1 well in the south-west corner of the block confirms the presence of hydrocarbons. Analogous data with the Ogaden basin also suggests there may be other potential source rocks and reservoirs. The Bur Mayo and the Kalicha-Seir formations in the Mandera-Lugh basin appear comparable to the Lower and Upper Hamanlei (Jurassic) formations in the Ogaden basin. If analogous, these formations should have high total organic content (TOC) source rocks and good quality reservoirs.

Several major structures have already been mapped on the block with the 850 km of existing 2D seismic coverage. On 5 April 2012, Afren exercised its option to increase its participating interest on the block from 50% to 80% and during the year the Partners commenced and completed the acquisition of 1,900 km of 2D seismic data to firm up the mapped structures and augment the results of airborne gravity and magnetic data acquired in 2011.

Outlook
Following the final processed products from 1,900 km of 2D seismic data acquired by Afren in 2013, six leads and prospects were identified as well as a number of new play concepts. The largest of these leads (covering in excess of 350 km2) will be the target of a 290 line km 2D seismic programme expected to commence in 2H 2014. The decision on where to drill will be made following the interpretation of this new dataset which is expected to conclude in early 2015.

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