Vietnamese operators purchase reservoir software

June 28, 2006
Hoan Vu and Hoang Long joint operating companies purchased Roxar's Tempest reservoir simuilation software.

Offshore staff

(Vietnam) -- Hoan Vu and Hoang Long joint operating companies purchased Roxar's Tempest reservoir simuilation software. The companies operate offshore Vietnam in block 9-2 and 16-1, respectively.

The Hoan Vu Joint Operating Co. consists of PetroVietnam Exploration & Production Co., 50%; SOCO Vietnam Ltd., 25%; and, PTTEP Hoan Vu Co. Ltd., 25%.

The Hoang Long Joint Operating Co. is owned by PetroVietnam, 41%; SOCO, 28.5%; PTTEP 28.5%; and OPECO, 2%.

6/28/06