Vietnam: Soco International to Plug and Abandon Te Giac Den appraisal Well, TGD-2X

The Te Giac Den appraisal well, TGD-2X, will be plugged and abandoned. Although the well encountered significant hydrocarbons in a clastics reservoir sequence at approximately 4,550 metres measured depth and produced both black oil and gas, it flowed at sub-commercial rates.

The TGD-2X well was drilled on the flank of the structure, whereas both the TGD-1X and TGD-1XST wells were on the crest of the structure. However, the oil leg on the flank of the structure lacked the gas content encountered on the crest, thus there was insufficient reservoir energy to generate acceptable flow rates. Post drilling analysis continues as the well is being prepared for abandonment and a decision as to the future of the TGD appraisal area will follow.

Development

The first two development wells on the Te Giac Trang development offshore Vietnam have been completed. Preliminary log analysis of the first well, the TGT-H1-1P, drilled to essentially twin one of the original discovery wells, indicates that the well encountered the top of the target reservoir horizon on prognosis. The second well, the TGT-H1-2P, encountered the reservoir section approximately 10 metres higher in the section than the pre-drill prognosis which strongly supports the favourable structural reservoir analysis following the reprocessed pre stack depth migrated seismic that the TGT field extends to the east.

Both wells are being suspended and will become producing wells upon start-up of production in mid 2011. Production during this first phase of development is estimated to be circa 55,000 barrels of oil per day.

Ed Story, President and Chief Executive of SOCO, commented:

“When we embarked on the TGD exploration campaign, we realized that it would be difficult and technically challenging. However, such a vast potential prize warranted the effort. Further analysis of the data gathered from the TGD-2X well will determine our path forward for this area. On the other hand, we are extremely pleased that the revised TGT field interpretation has been validated in an early well giving rise to a potentially greater accumulation of reserves in the field.”

SOCO is an international oil and gas exploration and production company, headquartered in London, traded on the London Stock Exchange and a constituent of the FTSE 250 Index. The Company has interests in Vietnam, the Republic of Congo (Brazzaville), the Democratic Republic of Congo (Kinshasa) and Angola, with production operations in Vietnam.

SOCO holds its interests in Vietnam, all in the Cuu Long Basin offshore, through its 80% owned subsidiary SOCO Vietnam Ltd. (‘SOCO Vietnam’) and through its 100% ownership of OPECO Inc. SOCO Vietnam holds a 25% working interest in Block 9-2, which is operated by the Hoan Vu Joint Operating Company and holds a 28.5% working interest in Block 16-1, which is operated by the Hoang Long Joint Operating Company. OPECO Inc. holds a 2% interest in Block 16-1.

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Source:Soco , October 12, 2010;