UK: Willows-1 & Blane

24 May 2006 07:03

Roc Oil Company Limited24 May 2006 24 May 2006 ROC OIL COMPANY LIMITED ("ROC") STOCK EXCHANGE RELEASE UK DRILLING UPDATE: WILLOWS-1 EXPLORATION WELL & BLANE OIL FIELD DEVELOPMENT 1. Willows-1, PEDL030, Onshore UK (ROC: 100%) As at 2100 hours (UK time) on 23 May 2006, the current operation at theWillows-1 exploration well was drilling ahead at 1,912 metres. Proposed TotalDepth is 2,500 metres. Willows-1 is a potentially large gas prospect located about 55 km east of Yorkand 15 km south of Scarborough. 2. Blane Oil Field, North Sea, Offshore UK (ROC: 12.5%) Batch drilling of the upper hole sections of the three Blane development wellscontinues. The two planned horizontal production wells will then be drilled toTotal Depth and completed. The third well, a water injector, will be completedin 2007. Please note that future reporting for Blane development drilling will be madewhen key milestones are achieved. The Blane Field Joint Venture (unitised across UK/Norway median line) comprises: EquityRoc Oil (GB) Limited 12.501%Talisman Expro Limited (Operator) 25.002%Bow Valley Petroleum (UK) Ltd 12.501%Eni UK Limited 13.897%Eni ULX Limited 4.105%MOC Exploration (U.K.) Ltd 13.994%Talisman Energy Norge AS 18.000% 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