Application of fluid inclusion technology to the study of hydrocarbon charge history in Upper Triassic reservoir of Chuanxi foreland basin, China

Comprehensive application of fluid inclusions data from the Upper Triassic reservoir of Chuanxi foreland basin in China, integrated with burial history and thermal evolution, indicates that there are four episodes of hydrocarbon charge during geologic history: early thermo-genetic oil stage, middle thermo-genetic oil stage, late thermo-genetic gas stage, structural adjustment charge stage. In every phrase of charge, four types of fractures origin from inflexible compaction, acid dissolution, breaking by abnormal pressure and tectonic deformation played a essential role in migration and accumulation of hydrocabon in the Upper Triassic reservoir of Chuanxi foreland basin.