GEOTEMPERATURE FIELD AND UP- WELLING ACTION OF HOT FLOW BODY AND ITS RELATIONSHIP WITH NATURAL GAS MIGRATION AND ACCUMULATION IN YINGGEHAI BASIN
莺歌海盆地热流体上侵活动与天然气运聚富集关系探讨

Yinggehai basin is a high geotemperature basin that developed at Eogene, and its high geotemperature field and high value of terrestrial heat flow mainly concentrate in the shale piercement belt of central downwarp area in basin. Development and evolution of shale piercement bell and especially upwelling action of hot flow body in late Pliocene epoch are close related with the migration and accumulation of natural gas and especially non-hydrocarbon (CO2). The local invasion of hot flow body, which is characterized by different layer, block and district, leads the migration and accumulation of hydrocarbon and non-hydrocarbon (CO2) to possess the same characteristics. And the development and evolution of shale pierce merit and upwelling action of hot flow body is the dominant factor which influence the migration, accumulation and reservoir forming of hydrocarbon and especially non hydrocarbon (CO2). The difference between hydrocarbon and non-hydrocarbon (CO_2)on time and channel of migration and accumulation is the main factor which control and constraint the different migration, accumulation and reservoir forming of hydrocarbon and non-hydrocarbon.