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Seisimic and Gravity Evidences of Pre-Tertiary Subcrops Beneath the Malay Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Asia Petroleum Geoscience Conference and Exhibition (APGCE), Nov 2022, Volume 2022, p.1 - 5
Abstract
Summary
The “basement play” concept in the Malay Basin has been based mainly on hydrocarbon discoveries in pre-Tertiary metasediments at Anding, SW Malay Basin (e.g., Kadir, 2010 ). Hydrocarbons in these fractured “basement” reservoirs are believed to be sourced from overlying Tertiary lacustrine source rocks within the deep half-grabens. This play concept, which drew analogy from the granitic basement play in offshore Vietnam, was the main driver for the “fractured basement” exploration since the mid-1990s. Besides metasediments, other lithologies also occur beneath the Base-Tertiary Unconformity (BTU), reflecting the complex pre-Tertiary geology of the surrounding landmasses. Hence, a better understanding of the pre-Tertiary basement geology is required to explore for hydrocarbons in the pre-Tertiary. To this end, we reviewed the evidence from seismic, well, and gravity data on the nature and distribution of pre-Tertiary rocks beneath the BTU.
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