Rockpool Acqui Regulatory News (ROC)

17 Apr 2007 07:03

Roc Oil Company Limited17 April 2007 17 April 2007 ROC OIL COMPANY LIMITED ("ROC") STOCK EXCHANGE RELEASE Drilling Activity Update: Offshore Perth Basin Exploration Drilling - Frankland-1 Roc Oil (WA) Pty Limited advises that as of 1000 hrs on 17 April 2007 AustralianWestern Standard Time (AWST), the Frankland-1 exploration well in WA-286-Poffshore Perth Basin was drilling ahead at 2,090 metres. Since the last drilling report (10 April) the well drilled to 1,720 metres where244 mm casing was set prior to drilling on to the present depth. Based on preliminary drill data and Measurement While Drilling information, itappears that the top of the reservoir objective was encountered some 50 metreshigh to prognosis at approximately 1,983 Metres Below Rotary Table (MBRT).Current tentative interpretation suggests that hydrocarbons are present in themain reservoir objective from 1,983 MBRT to 2,018 MBRT, over an internal of 35metres. Between 2,018 MBRT and current depth, the predominant lithology appears to below net/ gross section with high background gas, but with possible furtherhydrocarbon saturation in thin sands. An additional zone of potential interestwas encountered in the up hole section of the well between 1,338 MBRT and 1,348MBRT. The forward programme is to drill to the proposed total depth of 2,210 MBRT andrun a full suite of electrical logs to evaluate more precisely the nature andsignificance of the hydrocarbon indications encountered by the well. Participating Interests in WA-286-P are:Roc Oil (WA) Pty Ltd (Operator)...............................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% In accordance with ASX Listing Rules and AIM Rules, the information in thisRelease has been reviewed and signed off by Dr John Doran, Chief ExecutiveOfficer, Roc Oil Company Limited, BSc (Hons) Geology; MSc and PhD. Dr Doran hasat least five years' relevant experience within the sector and consents to theinformation in the form and context in which it appears. Damian FisherGeneral ManagerExternal 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