Test confirms 'major oil field' off Vietnam

April 28, 2006
A drillstem test of a well on the Te Giac Trang (TGT) structure off southern Vietnam confirmed the discovery of what SOCO International PLC, London, calls "a major oil field."

By OGJ editors
HOUSTON, Apr. 28 -- A drillstem test of a well on the Te Giac Trang (TGT) structure on Block 16-1 off southern Vietnam confirmed the discovery of what SOCO International PLC, London, calls "a major oil field."

Hoang Long Joint Operating Co., in which SOCO Vietnam Ltd. holds a 28.5% working interest, operates Block 16-1 and plans further drilling.

During a drillstem test of the TGT-3X well, 40.5° gravity oil flowed at a maximum rate of 9,008 b/d and gas at 5.4 MMcfd from perforations of the Miocene Lower Bach Ho (LBH 5.2) at 2,827-2,887 m through an 88/64-in. choke.

Logs indicated about 68 m of net pay in the LBH 5.2 sand and about 6 m of net pay in the Lower Oligocene C interval, which wasn't tested.

The discovery well TGT-1X and earlier appraisal, TGT-2X, also encountered the LBH 5.2 interval (OGJ Online, Mar. 15, 2006). The TGT-3X was drilled 10 km south of the TGT-1X on a separate fault block.

SOCO said the TGT structure comprises five fault blocks extending over 15 km on a north-south trend within an 80 km long play fairway that extends along the eastern and southern portion of Block 16-1.

Soco said next drilling on the block will be of a structure on the L prospect 30 km south of the TGT-3X well. The Te Giac Vang 1X is expected to take 30 days to drill.