Abstract:

Organic enclosure is the direct indicator of hydrocarbon generation, migration, accumulation and evolution. This paper discussed the properties of organic enclosures in different diagenesis stages from the Second Member of the Lower Triassic Jialingjiang Formation and determined the time, depth, direction, passage, phase state of migration and source of the gas. Five indicators, namely the type, amount, temperature, paleosalinity and constituent of the organic enclosures for the pool-forming assessment of natural gas pools are proposed based on typic dissection and contrast. Studying gas migration with organic enclosures, a comprehensive dynamic research in connection time with space could be made and the examinational results of Huangcaoxia gas pools are pretty well.