Operations Update

26 Sep 2007 07:01

Sound Oil PLC26 September 2007 Sound Oil plc26 September 2007 Pasundan-1 Operations Update - Drill Stem Test Results The first phase of testing operations on the Pasundan-1 well were completed on23 September 2007. Two tests of the lower part of the Baturaja Formationcarbonates were undertaken through the previously set 7-inch liner. DST 1 (8302-8374 ft) recovered 73 barrels of fluid after acidization by reversecirculation, mostly formation water and a trace of hydrocarbon gas. DST 2 (8024-8069 ft) flowed at a stabilized rate after acidization of 3000 BWPD*with a trace of hydrocarbon gas. These results indicate that the Baturaja Formation is an effective reservoirwith good porosity and permeability characteristics. Although both testsproduced formation water, the significance of the traces of hydrocarbon gaseswill need to be assessed. In any event the results provide encouragement fortesting the higher levels of the formation. The well is currently being suspended pending testing of the higher cavernouszone of the Baturaja (DST 3, 6770-6900 ft). This test will be carried out at alater date with another rig as previously announced (see Sound Oil announcement18 September 2007). It is expected that rigging down and demobilization of theGW93 rig will commence in the next few days. Sound Oil plc is a 20% shareholder (through its wholly owned subsidiary MitraEnergia Citarum Limited) in the BPREC operating company that has been drillingthe Pasundan - 1 exploration well, located approximately 50 km southeast ofJakarta, Indonesia. * Barrels of water per day. Dr Michael Cope BSc PhD CGeol, Head of Exploration at Sound Oil, a qualifiedpetroleum geologist, has reviewed the technical information contained in thisnews release. Contacts. Gerry Orbell, Chairman, Sound Oil plcTel: +44 (0)7903 861145 Dr A Basirov/David Jones, Smith & Williamson Corporate Finance LimitedTel: +44 (0)207 131 4000 Tim Thompson/Nick Melson - Buchanan CommunicationsTel: +44 (0)207 466 5000 This information is provided by RNS The company news service from the London Stock Exchange