在广泛调研国内外相关研究成果的基础上，综合大量文献中地震–地质剖面等资料，结合重磁资料最新研究成果，重新厘定了文莱–沙巴盆地边界，并将盆地分为巴兰三角洲坳陷和沙巴坳陷2个次级构造单元。综合分析认为，文莱–沙巴盆地是一个主要经历了3期构造演化且沉积速度较快的新生代含油气盆地。盆地的西部(巴兰三角洲坳陷)和东部(沙巴坳陷)沉积特点表现出了较大的差异性；烃源岩主要为下中新统–上新统陆生植物夹杂藻类，以泥岩、炭质泥岩及煤层为主；储层主要为上中新统和下上新统发育的三角洲、滨岸、下海岸平原相砂岩；盖层主要为下上新统区域性泥岩以及层内页岩、泥岩、钙质粉砂岩等。
Based on the extensive research of relevant research results at home and abroad, a large number of seismic-geological profiles and the latest research results of gravity and magnetic data, the boundary of the Brunei-Saba Basin was redefined, and the basin was divided into two sub-tectonic units: the Balan Delta Depression and the Sabah Depression. Comprehensive analysis indicated that the Brunei-Saba Basin was a Cenozoic petroliferous basin which has undergone three stages of tectonic evolution and rapid depositional velocity. There existed big difference between western basin (Balaam Delta Depression) and eastern basin (Sabah Depression). Hydrocarbon source rocks are mainly Lower Miocene to Pliocene terrestrial plants mixed with algae, which are mainly mudstone, carbonaceous mudstone and coal beds. Reservoirs are mainly Upper Miocene and Lower Pliocene delta, shore, coastal plain sandstones. Rock caps are mainly Lower Pliocene regional mudstone and shale, mudstone, calcareous siltstone within the zone.
