Gharabi-1 Exploration Well, Offshore Mauritania

Roc Oil (Mauritania) Company, a wholly owned subsidiary of ROC, advises that the Maersk Deliverer rig started drilling the Gharabi-1 exploration well at 19:10 hours (Mauritania time) on 7 January 2011. At 06:00 hours on 9 January (Mauritania time) the well was drilling ahead at a measured depth of 2,418 metres.

Gharabi-1 is located in Block C6, offshore Mauritania, approximately 22 kilometres southwest of the Cormoran-1 discovery. The planned total depth of the well is approximately 4,880 metres and the well is located in a water depth of 1,791 metres.

Participating Interests in Block C6 are: PC Mauritania I Pty Ltd (Operator) 72.58%; Tullow Petroleum (Mauritania) Pty Ltd 22.42%; Roc Oil (Mauritania) Company 5.00%.