摘要
四川盆地下二叠统灰岩储层中，较大储量缝洞系统以东吴期暴露溶蚀形成的管道状溶洞系统为主要储集空间。第三纪喜山运动产生构造裂缝，使致密灰岩具有较高渗滤能力，但在深埋条件下不具备产生较强岩溶作用形成大型溶洞的条件。缝洞系统是在东吴期古溶洞系统基础上，经埋藏后充填和溶解，最后由喜山期构造裂缝改造而成。储层地质模式可描述为东吴期管道状溶洞系统与喜山期构造裂缝网络的组合。在东吴期古岩溶发育区。
The tubular cave system resulted from erosion in Dongwu stage are the main reservoir space of Lower Permian limestone reservoirs in Sichuan Basin.The cave system were burried first,then filled up and eroded and finally reformed by Himalayan tectonic fractures.The geological model of the reservoirs could be described as a combination of tubular caves system of Dongwu stage and Himalaya tectonic fracture network.It is proposed that the place where Dongwua stage cave system developed and the place where unicline and syncling developed should be taken as furthur exploration areas.\;
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1999年第1期11-14,29,共5页
Oil & Gas Geology
基金
油气藏地质及开发工程国家重点实验室资助
关键词
模式
四川盆地
早二叠世
气藏
储集层
fissurecave reservoir\ model\ paleokarst\ Carbonate rock\ Sichuan Basin
