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The AAPG/Datapages Combined Publications Database
Southeast Asia Petroleum Exploration Society (SEAPEX)
Abstract
Abstract: Revisiting East Sabah Prospectivity Based on New Tectonic Understanding
The Sandakan Basin, located offshore eastern Sabah, Malaysia, has yet to make any commercial hydrocarbon discoveries despite years of exploration activities. The challenge in the basin stems from a perception of charge issue and shallow basement high due to poor seismic below the SRU (Shallow Regional Unconformity) and the DRU (Deep Regional Unconformity) based on the legacy seismic data.
The basin has two main proven play types to date: Early to Mid-Miocene and Mid to Late Miocene clastic and carbonates. We revisited the tectonic evolution of East Sabah, complemented by fieldwork and seismic reprocessing of few key regional lines to get a new understanding of the basement configuration in the region.
A bending tectonic model was devised by PETRONAS Basin Team in 2022. The model leads to a new tectonic understanding which would enable a fresh look on the basin and generate new play concepts by correlating the onshore geology to the offshore. The effort unravels the stratigraphic and structural trap style observed in the proven Miocene play as well as in the older Oligocene section.
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