川东南构造变形特征及其对页岩气保存的影响.pdf

第44 卷 第6 期 煤田地质与勘探 Vol. 44 No.6 2016 年 12 月 COAL GEOLOGY EXPLORATION Dec. 2016 文章编号: 1001-1986(2016)06-0021-06 川东南构造变形特征及其对页岩气保存的影响 郭卫星，熊 亮，魏力民 ( 中国石化西南油气分公司勘探开发研究院，四川 成都 610041) : – – ： ：P618.13 ：A DOI: 10.3969/j.issn.1001-1986.2016.06.004 Structure deformation of southeast Sichuan and its influences on preservation of shale gas GUO Weixing, XIONG Liang, WEI Limin (Exploration and Development Research Institute of Southwest Oil Gas Branch, SINOPEC, Chengdu 610041, China) Abstract: The structure in southeast Sichuan is complicated, and there are abundant shale gas resources in Per- mian and Silurian strata. Based on the analysis of lithology and interpretation of seismic data, Cambrian gyp- sum-salt layer and Middle-Lower Triassic gypsum-salt layer had important control action to structural deforma- tion, most faults sliped along gypsium-salt layer. The study area includes two parts: inner basin and basin margin. In inner basin symmetric folds with decollement of overlying strata were developed, basin margin was featured by structure of base-involved fold and thrust fault, and can be