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

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 continuing interests in Vietnam, Yemen, Mongolia, Libya and Thailand with ongoing production operations in Yemen and Mongolia. SOCO’s transaction to dispose of its Mongolian operations is pending completion after gaining approval from its shareholders at an EGM on 10 May 2005.

The initial wildcat exploration well, the Te Giac Trang, that spudded on 2 June 2005 on the "H" prospect on Block 16-1 offshore Vietnam was drilled to a total measured depth of 4,478 metres and has been cased. Preparations for testing have commenced.

The well was drilled to test several Miocene and Oligocene intervals in a previously un-drilled part of Block 16-1. It was drilled significantly deeper than the original prognosis due to the presence of encouraging hydrocarbon shows continuing below the original target depth.

On completion of the testing programme the rig will return to drill an appraisal well, CNV-4X, on the Ca Ngu Vang ("CNV") structure on Block 9-2. This well will be the third well in the multi-well drilling programme scheduled for Vietnam this year.

4 August 2005


ENQUIRIES:

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
Charles Vivian Tel: 020 7743 6672


NOTES TO EDITORS:

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

SOCO is aware of attempts to impersonate the company on social media. SOCO does not have a Facebook page.