Lacula Oil, a wholly owned subsidiary of ROC, advised that the Castanha-4 appraisal well has been drilled to a total measured depth of 2,343 meters and has been suspended following a preliminary drill stem test. Initial evaluation has indicated that the well encountered a gross hydrocarbon column of approximately 15 meters in the Chela Formation.

Production testing of the Castanha-2, Castanha the coming weeks.

Following the completion of production testing operations, the Joint Venture will then decide on Castanha as a Commercial Discovery. This decision is anticipated during 1H 2011.

Participating Interests in the Cabinda Onshore South Block are:

•Pluspetrol Angola Corporation (Operator) 45% •Lacula Oil Company Limited (ROC) 10% •Force Petroleum de Angola, S.A. 20% •Sonangol P&P, S.A. 20% •Cuba Petroleo 5%

Tags: ROC Oil