Drilling Update: Western Aust

Roc Oil Company Limited 13 March 2007 13 March 2007 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE DRILLING UPDATE: THREE WELL EXPLORATION DRILLING PROGRAMME OFFSHORE PERTH BASIN Roc Oil (WA) Pty Limited, a wholly owned subsidiary of ROC, advises that a three well exploration drilling programme is scheduled to commence in the offshore Perth Basin, Western Australia, in early April 2007. The three wells scheduled for drilling are Frankland-1 and Dunsborough-1 in WA-286-P, and Perseverance-1 in WA-325-P. The wells will be operated by ROC using the 'Premium Wilcraft' jack up drilling rig. The entire drilling programme is expected to be completed during May 2007. Commenting on the drilling programme, ROC's Chief Executive Officer, John Doran, stated that: 'Since the 2001 discovery of the Cliff Head Oil Field with the first moden exploration well in the offshore Perth Basin, 8 exploration wells have been drilled in an attempt to find another Cliff Head or, preferably, something significantly bigger in this region, but all have been dry. From ROC's point of view, the imminent drilling programme is probably the last roll of the dice involving, as it does, two wells which are government commitment wells. If this programme does not yield commercial encouragement, ROC will probably consolidate its Perth Basin interest to Cliff Head and the immediately surrounding area and redirect its exploration dollars to other parts of its portfolio. If the programme provides a commercial discovery, ROC will be 100% focussed on working with its co-venturers to appraise and, if warranted, develop it as soon as possible.' Participating Interests in WA-286-P are: Roc Oil (WA) Pty Ltd....................................37.5% AWE Oil (Western Australia) Pty Ltd.....................27.5% Wandoo Petroleum Pty Ltd................................24.0% ARC (Offshore PB) Limited................................6.0% CIECO Exploration and Production (Australia) Pty Ltd.....5.0% Participating Interests in WA-325-P are: Roc Oil (WA) Pty Ltd....................................37.5% Apache Northwest Pty Limited............................37.5% ARC (Offshore PB) Limited...............................20.0% Wandoo Petroleum Pty Ltd.................................5.0% Damian Fisher General Manager External Affairs & Investor Relations For further information please contact: 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
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