Drilling Report

Roc Oil Company Limited 02 January 2007 2 January 2007 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE OFFSHORE MAURITANIA DRILLING UPDATE CHINGUETTI-18 DEVELOPMENT WELL ROC advises that the Atwood Hunter drilling rig commenced drilling the Woodside-operated Chinguetti-18 development well within PSC B before midnight on 29 December (local time). At midnight on 30 December (local time), the well had been drilled to a depth of approximately 900 metres where the 30 inch conductor casing was run and then cemented prior to pulling out of hole on 31 December (local time). By 0600 hours on 1 January 2007 (local time), preparations were underway to drill ahead. Chinguetti-18 is located within the southern part of the Chinguetti Oil and Gas Field in a water depth of 819 metres approximately 80 km southwest of the Mauritanian capital Nouakchott. The planned Total Depth is 2,912 metres and the well is expected to be drilled and completed by late February 2007. Participating interests are: Company Chinguetti Joint Venture ---------------------------- ---------- Roc Oil group companies 3.24984% Woodside group companies (Operator) 47.38448% Hardman group companies 19.00800% Societe Mauritanienne des Hydrocarbures 12.00000% BG group companies 10.23440% Premier group companies 8.12328% ------------------------- ------------------------ Michelle Manook or 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 E-mail: 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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