During past decades, worldwide deep-water hydrocarbon exploration has attained interest with significant commercial discoveries. The upside exploration possibilities of worldwide deep-water basins are not explored to their full potential, and it has been expected that near future, many new discoveries will come. Globally, deep-water petroleum settings of different basins are highly variable. Effective exploration exertions in the frontier region will hang on to the application of knowledge gathered from an improved understanding of the well-explored basins with known petroleum systems. In Southeast Asia, a proven petroleum system exists in the Sabah basin and has a substantial financial influence on this region. Present-day hydrocarbon discovery in the deep-water region, NW Sabah Trough encou-raged an inclusive inquiry of the adjacent territory, e.g., the hydrocarbon prospectivity in the Dangerous Grounds region, where the exploration activities are in the initial phase. Earlier, the analysis was principally intensive on infrequent 2D seismic data and gravity-magnetic data investigation. An organised way of the seismic attribute analysis and well log interpretation of the carbonate platform of Late Oligocene-Middle Miocene age has not been conferred thus far in the published literature. In this research work, newly obtained 3D seismic data with high-resolution and well information have been used to evaluate the carbonate platform. Seismic sections reflect the faults related to syn-rift tectonic activity that was also prominent in the post-rift section. The variance extraction map reveals the structural trend in the platform region and also the growth of the reef on top of the carbonate platform. RMS amplitude extraction map reflects the delivery of carbonate platform with higher amplitude value; sweetness extraction map reveals the fault-related lateral discontinuities. Significant evidence of facies changes, carbonate to clay/shale has been observed. Density vs gamma-ray and density vs neutron porosity cross plot reflect the presence of limestone, sand, shaly sand/siltstone, and carbonaceous shale. Vp vs Vs cross plot reflects a linear trend. Vp/Vs vs P-impedance cross plot depicts the reservoir rock carbonates that are water-bearing. Mu-rho vs density cross plot discriminates the lithologies as carbonate, shaly sand/siltstone, shale. During the Middle Miocene end, the high influx of siliciclastic sediments has been observed, resulting in the demise and burial of carbonate. © 2022, Petroleum and Coal. All Rights Reserved.