RNS Number:4882E
Sound Oil PLC
26 September 2007

Sound Oil plc
26 September 2007

Pasundan-1 Operations Update - Drill Stem Test Results

The first phase of testing operations on the Pasundan-1 well were completed on
23 September 2007. Two tests of the lower part of the Baturaja Formation
carbonates were undertaken through the previously set 7-inch liner.

DST 1 (8302-8374 ft) recovered 73 barrels of fluid after acidization by reverse
circulation, 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 reservoir
with good porosity and permeability characteristics. Although both tests
produced formation water, the significance of the traces of hydrocarbon gases
will need to be assessed. In any event the results provide encouragement for
testing the higher levels of the formation.

The well is currently being suspended pending testing of the higher cavernous
zone of the Baturaja (DST 3, 6770-6900 ft). This test will be carried out at a
later date with another rig as previously announced (see Sound Oil announcement
18 September 2007). It is expected that rigging down and demobilization of the
GW93 rig will commence in the next few days.

Sound Oil plc is a 20% shareholder (through its wholly owned subsidiary Mitra
Energia Citarum Limited) in the BPREC operating company that has been drilling
the Pasundan - 1 exploration well, located approximately 50 km southeast of
Jakarta, Indonesia.

* Barrels of water per day.

Dr Michael Cope BSc PhD CGeol, Head of Exploration at Sound Oil, a qualified
petroleum geologist, has reviewed the technical information contained in this
news release.


Gerry Orbell, Chairman, Sound Oil plc
Tel:  44 (0)7903 861145

Dr A Basirov/David Jones, Smith & Williamson Corporate Finance Limited
Tel:  44 (0)207 131 4000

Tim Thompson/Nick Melson - Buchanan Communications
Tel:  44 (0)207 466 5000

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