POOL-FORMING FEATURES OF OLD OIL FIELDS IN THE EAST CHINA

Based on analysis of source rock maturity stage, fluid-inclusions and history simulation of sedimental basin setting and thermal evolution (transient thermal flow model), it is discussed in this paper the distribution patterns of key source beds, reservoir and cap rock characteristics and their matching relationship during basin evolution period in the old fields of East China.The source-reservoir-caprock system distribution and the matching features of oil-and-gas migration, accumulation and main trap forming time and the petroleum enrichment characteristics have also been discussed.