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

SOCO is an international oil and gas exploration and production company, headquartered in London. The Company has continuing interests in Vietnam, Yemen, Mongolia, Libya and Thailand with ongoing production operations in Yemen and Mongolia. As announced on 1 April 2005, SOCO has agreed to dispose of its Mongolian operations, subject to gaining approval from its shareholders.

After achieving the target depth of 6,123 metres measured depth, testing operations on the appraisal well on the Ca Ngu Vang ("CNV") structure on Block 9-2 offshore Vietnam, CNV-3X, have commenced. Due to its highly fractured nature the Granitic Basement reservoir was drilled with total losses of drilling fluid/seawater to the formation of more than 150,000 barrels.

The initial period of the testing operations is currently being extended while the flow from the well continues to improve through the process of "cleaning up" whereby the amount of recovery of drilling fluid declines and the oil rate increases. The aim is to establish a stabilised flow performance. Testing operations are continuing.


9 May 2005


ENQUIRIES:

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

College Hill
Tel: 020 7457 2020
Ben Brewerton
Nick Elwes


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.