淮南煤田泥页岩地球化学特征分析及生烃潜力评价  

Analysis on geochemical characteristics of mud shale and potential evaluation of hydrocarbon generation in Huainan Coalfield

作　　者：高德燚 胡宝林[1] 刘会虎[1] 徐宏杰[1] 

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《煤炭科学技术》2017年第5期198-204,共7页Coal Science and Technology

基　　金：国家自然科学基金资助项目(41302129;41402140);中国博士后基金资助项目(2016M601992);安徽省自然科学基金资助项目(1408085QE88)

摘　　要：为了对淮南地区煤系烃源岩特征作出评价,在采集相关样品的基础上对淮南煤田下石盒子组泥页岩样品的矿物特征和有机质的含量、显微组成以及成熟度进行了测试。结果表明:下石盒子组泥页岩中石英含量在35%左右;黏土矿物含量均值为56.28%。有机碳平均含量1.21%;干酪根以Ⅲ型和近于Ⅲ的Ⅱ2型为主,利于生气;样品的镜质组反射率均大于0.7%;生烃峰温基本高于445℃,有机质已进入成熟阶段。此外,多层煤层或煤线也为生烃提供了物质基础。综合评价认为,下石盒子组的烃源岩具有良好的生烃潜力,但较高的黏土矿物含量可能对后期的开采带来不利影响。In order to evaluate the coal-measure source rock in Huainan Coalfield,on the basis of collecting relevant samples,the mineral characteristics,organic matter content, macerals composition and maturity in nmd shale of the Lower Shihezi Formation in this coalfield were tested. The results showed that in mud shale of lower Shihezi Formation,the content of quartz was about 35%,clay mineral is about 56.28%; tire average content of organic carbon is 1.21% ;type of kerogen was IlI mainly,or II2 which was near III nminly, these factors are beneficial to hydrocarbon generation. Vitrinite reflectance of samples was greater than 0.7% , hydrocarbon generation peak temperature was higher than 445℃ ; organic matter had entered the mature stage. In addition,the seams of coal or coal lines also provide material basis for hydrocarbon generation. The comprehensive research shows that source rocks in the lower Shihezi Formation has good potential of hydrocarbon generation,but the content of clay mineral is high,it may take some adverse effects for later exploit.

关 键 词：淮南煤田 地球化学特征 泥页岩 有机碳 成熟度 生烃潜力 

分 类 号：TE122[石油与天然气工程—油气勘探]