中文摘要：

以往的油气和煤田勘探结果表明,济源凹陷发育有二叠系太原组-山西组、上三叠统谭庄组和下侏罗统鞍腰组等3套泥页岩层系.以这些勘探资料为基础,通过野外观测,结合有机地球化学分析、岩石学分析和等温吸附测试等,对该区页岩气的成藏条件和勘探潜力进行了系统分析.结果表明,上三叠统谭庄组泥页岩厚220～500 m,TOC含量大于2.0%,主要干酪根类型为II型,Ro为1.0%～2.0%,正处于生成油气高峰,且泥页岩中多夹杂粉砂岩、泥质粉砂岩,脆性矿物含量高,是济源凹陷最有利的泥页岩油气勘探开发层系,主要有利区位于凹陷的沁阳次凹南部、中央次凸及孟县-温县次凹的孟县-城伯以北地区;二叠系太原组、山西组泥页岩厚20～100 m,且含有多层煤,干酪根类型主要为III型,TOC平均含量为1.19%,处于大量生成干气的阶段,泥页岩中脆性矿物含量较高,是济源凹陷页岩气开发较有利的层系,主要有利区域位于凹陷的孟县-温县次凹北部、中央次凸;下侏罗统鞍腰组泥页岩厚度较大,有机质达到了成熟阶段,但有机碳含量较低,是潜在勘探层系.济源凹陷页岩气资源丰度可达（1.42～6.78）×108m3/km2,具有较大的泥页岩气勘探开发潜力.

英文摘要：

According to the data of former oil and gas and coal explorations,there are three sets of mudstone or shale formation in Jiyuan depression,including Taiyuan-Shanxi formation in Permian,Tanzhuang formation in the upper Triassic and Anyao formation in the lower Jurassic.There are basic geological conditions for the shale gas formation in Jiyuan depression.In order to make the potential shale gas exploration clear,the formation conditions of shale gas reservoirs were analyzed based on the data of the past oil,gas and coal exploration,the field geological exploration,organic geochemical analysis,petrology analysis and isothermal adsorption test,etc.According to the analysis to above data,several conclusions were obtained.In the Tanzhuang formation of the upper Triassic,the shale thickness is between 220 m and 500 m,TOC content is more than 2.0%,the main kerogen type is type II,and Ro is 1.0 % ～ 2.0%,which is favorable for shale gas generation and accumulation.The siltstone and pelitic siltstone generally is interbedded in shale,which is the best to the development of shale gas in Tanzhuang formation.It is the most favorable formation for the shale gas development in Jiyuan depression.The main favorable area is located in the south of Qianyang secondary depression,the central secondary uplift and the north of Mengcheng-Chengbo in Mengxian-Wenxian secondary depression.In the Taiyuan formation of Permian,the shale thickness is 20 ～ 100 m,there are several coal seams,the kerogen type is mainly type III,the kerogen maturity is in the phase of dry gas generation,the average TOC content is 1.19%,and the brittle mineral content is higher.Those are beneficial to shale gas development.The Taiyuan-Shanxi formation is more favorable for gas development,and the main favorable area is located in the north of MengXian-Wenxian secondary depression and the central secondary uplift.In the Anyao formation of the lower Jurassic saddle,the shale thickness is bigger,the kerogen reached a mature stage,but the organic carbon content aga