Well Test Result

Regal Petroleum PLC 18 January 2008 REGAL PETROLEUM PLC ('Regal' or 'the Company') Second Test on RBN-4 Well in Romania Regal Petroleum (AIM: RPT), the independent oil & gas exploration and production company, today announces that it has flow tested a second interval at its exploration well, RBN-4, in the Barlad Concession, Romania (100% working interest). The RBN-4 well was completed to a total depth of 973 metres TVD on 27 October 2007. This second, higher, interval of 12.7 metres, between 543.3 metres and 556.0 metres, in the Sarmatian formation was perforated and tested but no hydrocarbons were present. Results from the previous successful testing of the lower interval were announced on 13 December 2007. This lower 4.6 metre interval, between 756.7 metres and 761.3 metres, in the Sarmatian formation yielded a maximum dry gas flow rate of 3.74 MMscf/d on a 12mm choke with a flowing tubing head pressure of 49 bar over a 24 hour flow period. The RBN-4 well has now been suspended to allow re-entry of the lower producing interval and to allow further evaluation of the results of this well. David J Greer, Regal's Chairman and Chief Executive Officer, commented: 'Although the test results of the second interval are disappointing, we are very encouraged by the flow rates achieved from the lower zone and we will now be evaluating the potential for this gas discovery.' For further information, please contact: Regal Tel: 020 7408 9500 David J Greer, Chairman & Chief Executive Officer Evolution Securities Tel: 020 7071 4300 Robert Collins Mirabaud Securities Tel: 020 7321 2508 Pav Sanghera Citigate Dewe Rogerson Tel: 020 7638 9571 Martin Jackson Scott Fulton Definitions: bar one atmosphere pressure mm millimetres MMscf/d million standard cubic feet per day TVD true vertical depth In accordance with the guidelines of the AIM market of the London Stock Exchange, Antonio Mozetic, PhD Geological Sciences, SPE, Director of Regal Petroleum plc, is the qualified person that has reviewed the technical information contained in this press release. This information is provided by RNS The company news service from the London Stock Exchange
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