SOCO International plc ("SOCO" or "the Company")

The Company's majority owned subsidiary, SOCO Vietnam Ltd., announces the completion of the Ca Ong Doi 2X ("COD-2X") well, the first Clastics targeted well on Block 9-2. The well encountered lower Miocene sands however they were not charged with hydrocarbons possibly indicating that the structure was developed after migration.

Sands were also encountered in both the Oligocene "C" and "E" sequences. Although the Oligocene "C" had good shows, the sands were thinner than expected and, following evaluation of the electric logs, it was decided not to flow test this horizon. In the Oligocene "E" the shows encountered were of residual oil indicating that the reservoir had been breached.

The Trident IX rig is currently preparing to plug and abandon the COD-2X well and is preparing to move back to Block 16-1.

Ed Story, President and Chief Executive of SOCO, commented:

"The sands and oil shows encountered in this high risk well provide important insight into the clastics play in Block 9-2. We will now incorporate the results of the well into our understanding of the Block while we focus our near term exploration programme on the proven play fairway on Block 16-1 where we expect to drill up to eight exploration wells this year."

9th March 2007


SOCO International plc
Roger Cagle Deputy Chief Executive and Chief Financial Officer
Tel: 020 7747 2000

Pelham Public Relations
James Henderson Tel: 020 7743 6673
Alisdair Haythornthwaite Tel: 020 7743 6676


SOCO is an international oil and gas exploration and production company, headquartered in London, traded on the London Stock Exchange and a constituent of the FTSE 250 Index. The Company has interests in Vietnam, Yemen, Thailand, the Republic of Congo (Brazzaville) and the Democratic Republic of Congo (Kinshasa) with production operations in Yemen.

SOCO holds its interests in Vietnam, all in the Cuu Long Basin offshore, through its 80% owned subsidiary SOCO Vietnam Ltd ("SOCO Vietnam") and through its 100% ownership of OPECO, Inc. SOCO Vietnam holds a 25% working interest in Block 9-2, which is operated by the Hoan Vu Joint Operating Company and holds a 28.5% working interest in Block 16-1, which is operated by the Hoang Long Joint Operating Company. OPECO, Inc. holds a 2% interest in Block 16-1.

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