Anomalies of natural gases in the Gulf of Tonkin (South China Sea)

Offshore areas previously considered as unpromis ing with respect to hydrocarbons are now being sub jected to extensive investigations. The Gulf of Tonkin in the South China Sea is one such areas. In 1981, 1983, 1989, and 1990, the gas geochemical investiga tions in the South China Sea were conducte...

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Bibliographic Details
Published in:Doklady earth sciences 2015-03, Vol.461 (1), p.203-207
Main Authors: Akulichev, V. A., Obzhirov, A. I., Shakirov, R. B., Van Phach, Phung, Trung, Nguyen Nhu, Hung, Duong Quoc, Mal’tseva, E. V., Syrbu, N. S., Polonik, N. S., Anh, Le Duc
Format: Article
Language:English
Subjects:
Bottom water
Earth and Environmental Science
Earth Sciences
Gas industry
Geologists
Geology
Hydrocarbons
Natural gas
Offshore drilling
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Summary:Offshore areas previously considered as unpromis ing with respect to hydrocarbons are now being sub jected to extensive investigations. The Gulf of Tonkin in the South China Sea is one such areas. In 1981, 1983, 1989, and 1990, the gas geochemical investiga tions in the South China Sea were conducted by scien tists from the Pacific Oceanological Institute, Far East Branch, Russian Academy of Sciences (POI FEB RAS), together with Vietnamese geologists [1], whereas exploration of its petroleum resource potential was carried out by industrial organizations [2]. During these investigations, it was established that the western (Vietnamese) part of the South China Sea is charac terized by the significant variations in concentrations of methane and other hydrocarbon gases in bottom water, which reflect the presence or absence of oil pools and gas accumulations. In this connection, of particular interest are uninvestigated geological struc tures, which may represent generation centers of hydrocarbon fluids, and deep seated faults as possible conduits for migration of gases from the Earths inte rior toward the surface. Such prerequisites determine the fundamental urgency of their investigation.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X15030010