茂名盆地油柑窝组褐煤微观孔隙结构特征与分形特征  

The Structure Characteristics and Fractal Characteristics of Lignite from Youganwo Formation in Maoming Basin

作　　者：马云鹏[1] 赵迪斐[1,2] 郭英海[1,2] 王雪莲[1] 李刚[1] 卢晨刚 冯绪兴 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]煤层气资源与成藏过程教育部重点实验室,江苏徐州221008 [3]山西潞安金源煤层气公司,山西长治046204

出　　处：《煤》2016年第2期4-6,共3页Coal

基　　金：煤层气资源与成藏过程教育部重点实验室(中国矿业大学)开放基金资助项目(2015-007);中国矿业大学大学生创新创业基金资助项目(201517)

摘　　要：以广东茂名盆地油柑窝组褐煤为研究对象,利用高压压汞、扫描电镜等实验技术手段,探究褐煤微观储集空间的发育特征。结果表明：茂名盆地油柑窝组褐煤TOC（%）介于40.8%-67.4%之间,Ro介于0.37%-0.43%之间,成熟度较低;孔隙度介于12%-24%之间,孔隙以中孔、过渡孔为主;样品表面特征复杂,微米级孔隙、微裂隙较为发育;分形维数介于2.80-2.91之间,样品微观储集空间发育结构复杂,非均质性极强。Using the lignite samples of Youganwo Formation in Maoming Basin, Guangdong, the developmental characteristics of the micro reservoir space were explored using methods including Mercury intrusion porosimetry and Scanning Electronic Microscopy. Experimental results show that the lignite TOC （ % ） is between 40.8% - 67.4% , Ro is between 0.37% - 0.43%. The porosity is between 12% -24%. The mesopores and transition pores is the major type of pores in reservoir. The surface features of the samples are complex, and the micro pores and micro fractures are developed well. The fractal dimension is between 2.80 -2.91. The spatial structure of samples is complex and show strong heterogeneity characteristics.

关 键 词：褐煤 孔隙结构 分形特征 油柑窝组 

分 类 号：TQ531[化学工程—煤化学工程]