Seismic interpretation and sequence stratigraphy of the Phu Khanh Basin offshore Vietnam / Telakavati Lekshmanan

Telakavati , Lekshmanan (2017) Seismic interpretation and sequence stratigraphy of the Phu Khanh Basin offshore Vietnam / Telakavati Lekshmanan. Masters thesis, University of Malaya.

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      Abstract

      The Phu Khanh basin in offshore Vietnam is a frontier basin which has never been drilled. Seismic study study of Phu Khanh basin seismic indicates that it is a typical rift basin which comprises; 1) pre-rifting 2) rifting and basin inversion and finally 3) postrift sedimentation. Pre-rifting may have begun in the Late Cretaceous or Paleogene. Rifting and basin inversion took place during the Late Oligocene, which was followed by rifting till the Early Miocene. Post rift sedimentation took place from Middle to Upper Miocene whereby marine transgression dominated the basin. Sea level during the transgressive stage favored carbonate growth and was later followed by regression. The regressive stage has seismic evidence of lowstand, less obvious transgressive and distinct highstand tracts especially in the shallow part of the basin. Seismic data from the Phu Khanh basin indicate occurrence of active fluid circulation due to metamorphism during uplift of the mantle a x. The metamorphic fluid flow contributed to volcanism and gas escape features seen in the data. Potential source of rocks are believed to be present in the form of syn-rift lacustrine sediments. These sediments are likely from the gas window. Post-rift deposits may also be potential source rock. Basin floor fans, carbonate buildups, weathered basements, shallow water sands are potentially good reservoirs in the Phu Khanh basin. Hydrocarbon indicators such as flat spots, gas chimneys, polarity reversals are observed, which clearly indicates the presence of hydrocarbon in the basin.

      Item Type: Thesis (Masters)
      Additional Information: Dissertation (M.A.) – Faculty of Science, University of Malaya, 2017.
      Uncontrolled Keywords: Phu Khanh Basin; Reservoirs; Stratigraphy; Gas chimneys; Hydrocarbon indicators
      Subjects: Q Science > Q Science (General)
      Divisions: Faculty of Science
      Depositing User: Mr Mohd Safri Tahir
      Date Deposited: 27 Mar 2019 07:34
      Last Modified: 27 Mar 2019 07:34
      URI: http://studentsrepo.um.edu.my/id/eprint/9587

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