Activity Update: Drilling
23 APR 08
1. Offshore Mauritania
Roc Oil (Mauritania) Company, a wholly owned subsidiary of ROC, advises that as at 0000 hours (local time) on 22 April 2008, the Banda NW appraisal well had been plugged back to 1,078 mBRT and a sidetrack well, Banda NW ST-1, commenced and drilled to 2,284 mBRT.
Since the last Stock Exchange Release on 16 April 2008, wireline pressure data in Banda NW-1 had indicated penetration of a gas column, but as uncertainty existed concerning the location of fluid contacts, a sidetrack borehole was initiated.
The forward programme is to drill the sidetrack to further evaluate the hydrocarbon column in a more favourable structural position.
Participating Interests in the PSC Area B Joint Venture are:
ROC Group Companies...................................................... 3.693%
PC Mauritania I Pty Ltd (Operator).................................. 53.846%
Tullow Oil plc...................................................................... 21.600%
Mauritania Holdings B.V.................................................. 11.630%
Premier Oil Mauritania B Limited...................................... 9.231%
2. Blane Oil Field, North Sea
Roc Oil (GB) Limited, a wholly owned subsidiary of ROC, advises that as at 0600 hours (local time) on 22 April 2008, the "Ocean Princess" rig had completed water injectivity tests on the 30/3a-3Z well.
The forward programme is to finalise connection of the well to the pre-laid water injection pipeline from the Ula Platform.
Unitised Interests in the Blane Oil Field are:
Roc Oil (GB) Limited......................................................... 12.5%
Talisman Energy (UK) Limited (Operator).................... 25.0%
Talisman Energy Norge AS............................................. 18.0%
MOC Exploration (UK) Limited
(a subsidiary of Nippon Oil Corporation)...................... 14.0%
ENI UK Limited .................................................................. 13.9%
ENI ULX Limited................................................................... 4.1%
Bow Valley Petroleum (UK) Limited................................ 12.5%
For further information see: Stock Exchange Release 23.04.08