渝东南地区海相页岩气保存条件评价  

Evaluation of marine shale gas preservation condition in southeastern Chongqing

作　　者：刘人和[1,2] 张瀛涵 刘洛夫[1] 巩文龙 高小跃[1] 李婧[1] 

机构地区：[1]中国石油大学(北京)油气资源与工程国家重点实验室,北京102249 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《能源与环保》2017年第6期13-17,22,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金项目(41502123)

摘　　要：四川盆地及周缘海相页岩的保存条件对页岩气富集具有关键控制作用。基于渝东南地区志留系龙马溪组海相页岩气差异富集特征,采用岩心描述、测井分析、盆地模拟等技术,分析了地层压力、裂缝发育特征和构造演化过程对页岩气保存的控制作用。结果表明,研究区从西北部到东南部页岩构造抬升幅度增大、页岩中裂缝密度增大、压力系数降低、裂缝密度增大、页岩中含气量降低。在此基础上,优选裂缝密度、剥蚀量、压力系数等参数,定量评价了研究区页岩气保存条件,认为由研究区西北部向东南保存条件逐渐变差,导致页岩含气量降低。研究成果对四川盆地及其周缘志留系页岩气勘探具有指导意义。The shale gas preservation condition around Sichuan Basin plays the major factors core, well-logging,basin modeling data,the differential enrichment characteristics of the marinethe southeast area of Chongqing were proposed , ad the major controlling factors for shale gas distribution and structural evolution were discussed. The results show that,from the northwest to the sure coefficient decreases,the density of fracture increases,the tectonic uplift increases and the gas contents decreases. Further more,theparameters of uplift amplitude,erosion thickness and pressure coefficient were optimized to quantitatively evaluate vation condition. From the northwest to the southeast of the study area,the poor preservation conditionstent. Results of research have great significance for the Silurian shale gas exploration in

关 键 词：海相页岩气 构造演化 裂缝 保存条件 渝东南地区 

分 类 号：P618.13[天文地球—矿床学]