LUKOIL has acquired a 25% share in deepwater Block SL-4B-10 offshore Sierra Leone.
The Russian independent bought the stake from Talisman Energy, the Canadian minnow who is also the block operator. The remaining partners are Petronas (25%) and Prontinal (20%). SL-4B-10, covers an area of 2200 sq. km, in water depths ranging from 100 to 3000 m, and it adjoins SL-05-11 Block, where LUKOIL is an operator. An exploration well is currently being drilled on the Djembe structure from Stena DrillMax rig.
The Petroleum Agreement for the block was initially signed in 2003. The first exploration phase of the contract area (over 300 line km of 2D seismic, and over 1000 sq.km of 3D seismic survey) was completed in 2009. Based on the data, several potentially productive targets were identified. As far back as 1982, an exploration well had been drilled in a shallow part of the block , to a total depth of 2400 mThe well encountered oil shows in the Albian and Cenomanian sequence.