Crude Oil Source and Accumulation Models for the Wenchang Formation, Southern Lufeng Sag, Pearl River Mouth Basin, (Offshore) China

In recent years, a large amount of industrial oil and gas resources have been discovered in the Paleogene Wenchang Formation (WC) southern Lufeng sag, confirming that WC are promising prospects for petroleum exploration. However, because complex lithology, multiple sources crude multi-period charging characteristics WC, accumulation process model not clearly understood. Therefore, this study, main hydrocarbon key periods determined by combining biomarker geological analyses. Finally, is systematically summarized. The obtained results show source rock hydrocarbons study area. types sag classified into three types. Type A comes from rocks Members 3 4. B partly 1, 2, 5 6. C mix type oil. There typify area: first period, was with vertical migration fault; second lateral sand body; third body adjacent to source. methodology can support offshore