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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. |
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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). |
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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. |
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Onshore
Tonle Sap Basin |
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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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