UK-based Tullow Oil has announced that the deeper section of the Tweneboa-1 exploration well in Ghana and the Karuka-2 exploration well drilling the Vundu prospect in Uganda’s Block 2 have both encountered oil bearing sands.

The Tweneboa-1 well has been deepened to 3,938m and encountered 4m of oil bearing sands as well as an over-pressured zone at total depth.

The Tweneboa-1 well was drilled by the Eirik Raude deepwater rig in a water depth of 1,148m, about 25km west of the Jubilee Field, according to Tullow Oil.

According to the company, the Karuka-2 exploration well on the Vundu prospect in Block 2 as been drilled and logged. The well reached a total depth of 897m and encountered limited thin-bedded oil bearing sands from 764m to 772m.

The Karuka-2 well is being suspended and the rig will then move to drill the amplitude supported Nsoga prospect in the Victoria Nile Delta, expected to spud in early April 2009.