TGT well supports field extension theory
SOCO International says development drilling is proceeding as planned on the Te Giac Trang (TGT) field in the Cuu Long basin offshore southern Vietnam.
LONDON -- SOCO International says development drilling is proceeding as planned on the Te Giac Trang (TGT) field in the Cuu Long basin offshore southern Vietnam.
The first two development wells on the field in block 16-1 were completed last month. Log analysis of the first well, TGT-H1-1P, suggests it encountered the top of the target reservoir horizon on prognosis.
However, the second well, TGT-H1-2P, encountered the reservoir section 10 m (33 ft) higher than the pre-drill prognosis. This supports the structural reservoir analysis that followed reprocessing of pre-stack depth migrated seismic that the TGT field extends to the east. The TGT-H1-3P, the third well, is currently being completed.
TGT is due to start production in August 2011, building to 55,000 b/d of oil.
In block 9-2, SOCO says production from the Ca Ngu Vang field averaged 9,600 b/d this summer. A shut-in was implemented from Oct. 26 through Nov. 7 to allow a field-wide downhole pressure survey to be conducted. The results will support reservoir management strategies and field reserve estimates.
Development drilling will continue for the next few months until the drilling rig transfers from the platform jacket to enable installing the platform topsides and production facilities. Some of the wells will be drilled to further probe the edges of the field as interpreted by the current field geologic model, and the results could materially alter the reserves picture.
Elsewhere in the block the partners are applying for an extension to the TGD appraisal area license, which is due to expire at the end of this year. This would allow them to evaluate drilling results on the TGD discovery and acquire further seismic, if need be, over the appraisal area.