Oil and gas group SOCO International (LON:SIA) this morning reported that an appraisal well being drilled on its Te Giac Den field offshore Vietnam had encountered hydrocarbons in a clastics sequence at approximately 4,450 metres measured depth. Drilled to appraise the "E" prospect discovery, well TGD-2X reached total depth of 4,669 metres after penetrating the target hydrocarbon zone in the Oligocene "E" formation.

The TGD-2X is being drilled by the jack up rig Maersk Convincer on a sole risk basis and is targeting reserves (P50) of around 100 million barrels in the supravolcanics interval that was briefly tested in a initial discovery well. The TGD Appraisal Area covers 150 sq km including the high pressure, high temperature discovery well, TGD-1X-ST1, on Prospect E and the analogous E South Prospect. This area borders the southern boundary of the Te Giac Trang field.

SOCO said that well logging was ongoing but that drilling shows and early log interpretation indicated two main reservoir sand intervals. Approximately 40 metres will be tested after a 7" liner is set and cemented. Testing is expected to take approximately three weeks. After the completion of testing there will be a further release with results and mapping a way forward. For detailed discussion about SOCO, click here.

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