Controlling factors for shale gas accumulation and prediction of potential development area in shale gas reservoir of South China
Controlling factors for shale gas accumulation and prediction of potential development area in shale gas reservoir of South China
复制标题
DOI：
--
复制
发表时间：
2009
影响因子：
1.8
通讯作者：
Bian Rui-kang
中科院分区：
文献类型：
--
作者：
Bian Rui-kang
在总结美国页岩气成藏理论和条件的基础上，分析了页岩气成藏的控制因素，并将其划分为内部控制因素和外部控制因素，其中内部控制因素包括有机质类型、含量、成熟度，页岩的裂缝、孔隙度、渗透率、矿物成分、厚度、湿度等;外部控制因素包括储层深度、其中，有机质类型、含量、成熟度以及裂缝、页岩的孔隙度和渗透率是页岩气成藏的主要因素，利用参数模型预测了页岩气成藏的有利区，通过模型的类比分析表明，页岩气成藏的有利区带是页岩气成藏的有利区带。寒武系和志留系是中国南方海相古生界页岩气最有利的储层，寒武系最有利的地区位于四川盆地、米仓山-大巴山前陆、北方黔北、湘西、渝东和江南隆起北部;志留系最有利的地区位于四川盆地，研究区主要分布在米仓山-大巴山前陆及长江上游的渝东、鄂西、长江中游的鄂北和长江下游的苏南地区，并对有利区带的页岩气指标进行了分析，以期为我国页岩气的早期评价提供参考。
On the basis of the pool-forming theory and conditions for shale gas in the United States,the controlling factors for shale gas accumulation were analyzed and divided into internal and external factors.The internal control factors include the type,content and maturity of organic matters,and the fracture,porosity,permeability,mineral composition,thickness,humidity of shale.The external control factors include reservoir depth,temperature and pressure of formation.Among them,the type,content and maturity of organic matters,as well as the fracture,porosity and permeability of shale are the main factors for generating shale gas reservoir.The favorable areas for developing shale gas reservoirs were predicted by using parameter model.The analogical analysis based on the model suggests that the Cambrian system and the Silurian system are the most favorable strata for developing of shale gas reservoirs among the marine Paleozoic strata in South China.The most favorable areas of the Cambrian are located in Sichuan Basin,the Micangshan-Dabashan foreland,the northern Guizhou Province,West Hunan Province,East Chongqing and the north part of Jiangnan uplift.The most favorable areas of the Silurian are located in Sichuan Basin,the Micangshan-Dabashan foreland and East Chongqing,West Hubei Province of Upper-Yangtze River,North Hubei Province of Middle-Yangtze River and South Jiangsu Province of Lower-Yangtze River.The indexes of shale in the favorable areas were analyzed to provide reference for early evaluation of shale gas in China.