吐哈盆地中侏罗统西山窑组页岩气勘探远景  

Exploration prospect of shale gas in Xishanyao Formation of Middle Jurassic in Tuha Basin

作　　者：李靖 秦荣芳[2] Li Jing;Qin Rongfang(Department of Geological Surveying and Mapping Engineering,Shanxi Institute of Energy,Jinzhong 030600,Chin;State Key Laboratory of Coal Resources and Safe Mining,CUMTB,Beijing lO0083,China)

机构地区：[1]山西能源学院地质测绘工程系,山西晋中030600 [2]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《能源与环保》2018年第9期9-14,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：中央高校基本科研业务费专项资金项目(2010YD11);山西省"1331工程"重点学科建设计划

摘　　要：为了探索吐哈盆地中侏罗统西山窑组煤系页岩气的富集特征,充分利用钻井资料、野外露头资料、分析测试资料等数据,对泥页岩平面分布特征、烃源岩有机地化特征以及页岩储集层特征展开分析。吐哈盆地泥页岩发育情况良好,泥岩累计厚度最大值达到600 m,泥岩总有机碳含量均值达到了2. 06%,干酪根类型以Ⅲ型为主,镜质体反射率普遍高于0. 5%,达到了成熟阶段,具备产气的能力。由于强烈的构造作用,泥页岩的物性特征变化范围很大,脆性矿物含量通常大于60%。岩石的硬度较大、脆性高,总体评价为较好—好等级页岩储集层。利用泥岩累计厚度、泥岩总有机碳含量和镜质体反射率等条件的约束,圈定了台北凹陷和哈密坳陷的部分区域是该区煤系页岩气勘探优选区。In order to explore the Tuba Basin in the Jurassic Xishanyao Formation of coal shale gas enrichment, making full use of drilling data, outcrop data and analysis of test data of shale distribution characteristics, the distribution characteristics of shale, organic geoehenfieal characteristics of source rocks and characteristics of shale reservoirs were analyzed. The shale development in Tuba Basin is good. The maxinmum eumulative value of nmdstone is 600 m,and the total organic carbon content of nmdstone reaches 2.06%. The kerogen type is mainly type Ⅲ, vitrinite reflectance is generally higher than 0.5%, reaching the maturity stage, and has the ability to generate gas. Because of strong tectonic action, the physical property of shale has a wide range of physical characteristics, and the content of brittle nfinerals is usually more than 60%. The hardness of rock is relatively high, and the rock is brittle, and the overall evaluation is better-good grade shale reservoir. The constraints of mudstone eumulative thickness, total organic carbon content of shale and vitrinite reflectance are used to delineate parts of Taipei sag and Hanfi depression, which is the exploration area of coal shale gas exploration in this area.

关 键 词：吐哈盆地 西山窑组 煤系页岩气 地球化学特征 勘探远景 

分 类 号：D618.13[政治法律—政治学]