A major breakthrough in geological survey of coal measure gas in Southern Sichuan, China

作者：Cai-qin Bi,Han-you Zhu,Jia-qiang Zhang,Yan-sheng Shan,Yang Chen,Huan-peng Chi,Yong Luo,Zhi-jun Zhang

摘要：1.Objectives Southern Sichuan is located in Xuyong-Junlian superimposed fold belt in the southern margin of Sichuan Foreland Basin,with an area of about 15000 km^2.The coal measures of Upper Permian Xuanwei Formation and Longtan Formation are characterized by mudstone,clayey mudstone,fine sandstone,siltstone,and coal seams interbedded.The coal seams and carbonaceous mudstone have good hydrocarbon generation potential.The coal measure“three gas”includes coalbed methane(CBM),coal shale gas and coal measure tight sandstone gas coexist.There was a breakthrough in the CBM survey in Junlian,Gulin,and other areas in Southern Sichuan(Yin ZS et al.,2019).But it lacks a comprehensive and systematic evaluation of coal measure gas resource potential.

发文机构：Oil and Gas Resources Survey Key Laboratory of Unconventional Oil and Gas Geology Sichuan Insititute of Coal Field Geological Engineering Exploration and Designing

关键词：MUDSTONESANDSTONESURVEY

分类号： P61[天文地球—矿床学]