Rockpool Acqui Regulatory News (ROC)

27 Sep 2005 07:03

Roc Oil Company Limited27 September 2005 27 September 2005 ROC OIL COMPANY LIMITED ("ROC") STOCK EXCHANGE RELEASE MAURITANIA OFFSHORE DRILLING UPDATE ROC advises that the following release was made earlier today by WoodsidePetroleum Ltd: "Woodside Mauritania Pty. Ltd., a wholly-owned subsidiary of Woodside PetroleumLtd., reports the following activity offshore Mauritania since the last reportissued on 20 September 2005. PSC Area B: Tevet-2 Combined Appraisal and Exploration Well The 'Stena Tay' rig drilled the Tevet-2 well to a depth of 2,785 metres.Wireline logs, including fluid sampling and downhole pressure measurements, wereacquired over the Miocene appraisal objective, where oil and gas was discoveredin the Tevet-1 well. A preliminary evaluation of these data and data acquiredwhile drilling has established that the well intersected a gross gas interval ofapproximately 1.5 metres above a gross oil interval of approximately 37 metres. Whilst the hydrocarbon sands are of a similar thickness to those discovered inthe Tevet-1 well, the amount of reservoir sand is less than expected. Furtherstudies will be required to determine the significance of the Tevet-2 result. At midnight on 26 September 2005, preparations were underway to drill to thenext casing point. The well will then target a deeper exploration prospect. Theplanned total depth of the well is approximately 3,965 metres. Chinguetti Development Wells The 'West Navigator' drillship continues to perform completion work onChinguetti Development wells. Woodside does not plan to issue regularannouncements regarding operations on Chinguetti development wells but will doso if necessary to comply with its continuous disclosure obligations under theASX Listing Rules. General All reported drilling depths are referenced to the rig rotary table and alltimes are Universal Time (UTC) (Mauritanian time). The locations of planned exploration wells and the Chinguetti Oil Field areshown on the attached map*." Participating Interests in the Chinguetti Joint Venture and relevant PSC areasare: +---------------------------+-----------+----------+----------+----------+ | Company |Chinguetti | PSC-A | PSC-B | PSC-C, | | | Joint | | | Block 6 | | | Venture | | | | +---------------------------+-----------+----------+----------+----------+ |Woodside group companies | 47.38448% | 53.846% | 53.846% | 37.578% | |(Operator) | | | | | +---------------------------+-----------+----------+----------+----------+ |Hardman group companies | 19.00800% | 24.3% | 21.6% | 22.422% | +---------------------------+-----------+----------+----------+----------+ |Groupe Project Chinguetti | 12.00000% | -- | -- | -- | +---------------------------+-----------+----------+----------+----------+ |BG group companies | 10.23440% | 13.084% | 11.63% | -- | +---------------------------+-----------+----------+----------+----------+ |Premier group companies | 8.12328% | -- | 9.231% | -- | +---------------------------+-----------+----------+----------+----------+ |Roc Oil group companies | 3.24984% | 4.155% | 3.693% | 5.0% | +---------------------------+-----------+----------+----------+----------+ |Fusion group companies | -- | 4. 615% | -- | -- | +---------------------------+-----------+----------+----------+----------+ |Petronas Carigali Overseas | -- | -- | -- | 35.0% | |Sdn Bhd | | | | | +---------------------------+-----------+----------+----------+----------+ *Map attached to the copy of this release on ROC's website.(http://www.rocoil.com.au/Pages/ASX_Releases/2005_Releases/September-2005.html) Michelle Manook For further information please contact:General Manager - Corporate Affairs Dr John Doran on Tel: +61-2-8356-2000 Fax: +61-2-9380-2635 Email: jdoran@rocoil.com.au Or visit ROC's website: www.rocoil.com.au Dr Kevin Hird General Manager Business Development Tel: +44 (0)207 586 7935 Fax: +44 (0)207 722 3919 Email: khird@rocoil.com.au Nick Lambert Bell Pottinger Corporate & Financial Tel: +44 (0)207 861 3232 This information is provided by RNS The company news service from the London Stock Exchange