Conduit System and formation mechanism of heat fluids in diapiric belt of Yinggehai basin,China  

作　　者：解习农 李思田 胡祥云 董伟良 张敏强 

机构地区：[1]Faculty of Earth Resources, China University of Geosciences [2]China Offshore Petroleum Nanhai West Corporation

出　　处：《Science China Earth Sciences》1999年第6期561-571,共11页中国科学（地球科学英文版）

基　　金：Project jointly supported by the Ministry of Science and Technology of China (Grant No. 95-Pre-39);the National Natural Science Foundation of China (Grant No. 49732005); A Hundred Excellent Researchers Foundation from the Ministry of Land and Resou

摘　　要：The conduit system of heat fluids in diapiric belt of Yinggehai basin is dominantly vertical faults and fractures . Detailed research on the formation mechanism and their occurrence features shows that the faults and fractures can be classified into three types: intrastratal dispersive hydrofracture, puncturing fault and upwarping-extensional fault. The development of the fault and fracture system not only resulted in the changes of the temperature and pressure fields in the basin, but also affected the hydrocarbon migration in the overpressured system. These faults and fractures constituted the main pathways for vertical hydrocarbon migration, and opening and closing intermittently led to episodic expulsion of overpressured fluid compartment. Thus there formed the pool-forming model of multi-source mixing and ploy-stage migration and accumulation for hydrocarbons in the Yinggehai basin.The conduit system of heat fluids in diapiric belt of Yinggehai basin is dominantly vertical faults and fractures . Detailed research on the formation mechanism and their occurrence features shows that the faults and fractures can be classified into three types: intrastratal dispersive hydrofracture, puncturing fault and upwarping-extensional fault. The development of the fault and fracture system not only resulted in the changes of the temperature and pressure fields in the basin, but also affected the hydrocarbon migration in the overpressured system. These faults and fractures constituted the main pathways for vertical hydrocarbon migration, and opening and closing intermittently led to episodic expulsion of overpressured fluid compartment. Thus there formed the pool-forming model of multi-source mixing and ploy-stage migration and accumulation for hydrocarbons in the Yinggehai basin.

关 键 词：Yinggehai basin overpressured system HYDROFRACTURING EPISODIC HYDROCARBON expulsion. 

分 类 号：P544.4[天文地球—构造地质学]