Offshore Khmer Basin
          Khmer Basin was tectonically formed as a result of extrusion in Indochina due to the collision of the Indian Plate into the Eurasian Plate. Coupling with Indian-Australian Plate movement and Philippine Sea Plate, it formed the main petroleum basins in Southeast Asia, especially in the Gulf of Thailand. The basement of the Khmer Basin consists mainly of pre-Tertiary rocks.
          The basin was stratigraphically divided into two sequences, syn-rift (Early Oligocene alluvial fan clastics and lacustrine shale) and post-rift sequence (Late Oligocene to Recent fluvial sediments with minor lacustrine and marine episodes).
          Even though some previous studies indicated that Khmer Basin may consist of several types of play, four types have been identified to be more likely prospective. These types are synthetic, antithetic, inner terrace, and horst, of which the synthetic Angkor Prospect is the most viable for first gas and condensate development.

  Onshore Tonle Sap Basin

        Two sedimentary features ranging from Pre-Cambrian to Quaternary have been identified as a result of earlier onshore geological and geophysical surveys. Some convincing evidence of petroleum potential are for example, presence of source rocks, thick plays which are also exposed at the surface (volcanic, metamorphic and clastic) and large structures.

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Last Update: 8 August 2002