Cambodia/OCA Petroleum Geology

The study, encompassing the Khmer Trough/Shelf and the Overlapping Zone, has well control from nine wells in Cambodia, and associated seismic in both Cambodian waters and the Overlapping Zone, together with four wells bordering the overlapping zone in Thai waters.

This study is designed to complement Core Laboratories’ 1995-1999 study of the Gulf of Thailand, though it can be used independently. A key feature of this study is the creation of a digital database of electric logs, well and laboratory data, and a HTML version of the interpretive report and figures.

The well database includes wells up to and including 1996. The Overlapping Zone studied will thus have well control from both Thai and Cambodian wells. The study offers upstream asset evaluation teams a complete tool for the geological and economical analysis of forthcoming opportunities in the area.

The technical objectives of the proposed study are to provide a geological model of the area. The geological model will provide an improved basis for paleogeographic, structural, and hydrocarbon evaluation, and functioning of petroleum systems. This will be achieved through the following approach:

  • Construct a basin-wide lithostratigraphic and biostratigraphic framework as a basis to establish a non-marine sequence stratigraphy and models of sedimentary facies for such sequences in Cambodia and the Gulf of Thailand
  • Investigate the stratigraphic distribution of effective hydrocarbon source rocks in the area
  • Determine the structural style and provide a balanced interpretation of the structural mechanism for the origin of each basin in the study area
  • Establish correlations between reservoir quality and depositional/diagenetic units, and evaluate controls on reservoir quality and seal effectiveness
  • Provide a summary of the petroleum geology and hydrocarbon potential of Cambodia and the Overlapping Zone
  • Provide a digital database of laboratory and well data including electric logs for the area

Four (4) bound interpretive volumes are provided. These volumes are fully illustrated with seismic sections, analytical data and regional data in the form of maps, isopachs and cross sections. Conclusions from the analytical and interpretive program will be synthesized into a regional petroleum geology synthesis, outlining current and proposed play concepts.