Facies Heterogeneity and Lobe Facies Multiscale Analysis of Deep-Marine Sand-Shale Complexity in the West Crocker Formation of Sabah Basin, NW Borneo

Deepwater lobes constitute a significant volume of submarine fans and are primarily believed to exhibit simple sheet geometry. However, recent studies interpret the geometries these deep-marine as distinct with respect complexity facies their distribution. Hence, conceptual model sediments is essential discuss associated fan lobe architecture. The present study highlights heterogeneity distribution various elements at multiscale level by considering case West Crocker Formation Sabah in northwest Borneo. formation was logged on bed-to-bed scale from recently well-exposed sections, total vertical thickness more than 300 m. lithological characteristics, bed geometry, sedimentary textures structures individual beds were used categorize rock units into nine lithofacies: five sandstone lithofacies (S1–S5), one hybrid (H), two siltstone (Si1 Si2) shale or mudstone (M). These grouped four associations (FA1–FA4), which interpreted axis (FA1), off-axis (FA2), fringe (FA3) distal interlobe (FA4) associations. This applicable for subseismic, complexities characterize potential hydrocarbon intervals sand-shale system around globe.