济阳拗陷上古生界煤成气储层非均质性研究  

Studies on the Coal-formed Gas Reservoir Heterogeneity in the Upper Paleozoic in Jiyang Depression

作　　者：门岳峰 郑雪[2] 杨其栋[2] 

机构地区：[1]中化地质矿山总局山东地质勘查院,山东济南250013 [2]山东省沉积成矿作用与沉积矿产重点实验室.山东科技大学,山东青岛266590

出　　处：《西南石油大学学报（自然科学版）》2015年第1期25-32,共8页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：济阳拗陷上古生界是重要的煤成气储层,储层非均质性是影响地下煤成气运移重要因素,同时也是认识煤成气藏的基础,因此,对煤成气储层的非均质性研究水平将直接影响到对储层中煤成气的分布规律的认识和开发效果的好坏。根据所掌握的资料,运用统计学方法和洛伦兹曲线法,分别从平面、层间、层内3个方面对济阳拗陷上古生界煤成气储层的非均质性进行研究,并根据研究结果做出评价。结果表明,济阳拗陷沾化凹陷孤北地区砂体渗透率大致呈西高东低、北高南低的趋势。储层层间非均质性严重的井区有德古2、王古1、孤北古1、孤北古2、孤北古3等,层内非均质性严重的井区有德古2、孤北古1、孤北古2等,这些对济阳拗陷煤成气的勘探有指导意义。Neopaleozoic is an important coal-gas reservoir of Jiyang Depression. The reservoir heterogeneity is an important factor to the migration of underground coal-gas, and is also the basis for understanding coal-gas, so achievements of researches on the reservoir heterogeneity have a direct impact on recognizing the distribution law of coal-gas in reservoirs and on the development effect. According to the information available, and by using statistical methods and the Lorenz curve methods, we studied the coal-gas reservoirs heterogeneity from the plane, intralayer, interlayer heterogeneity in Paleozoic Jiyang De- pression, respectively, and evaluated the results. The results show that sand permeability of Gubei Area in Zhanhua Sag of Jiyang Depression decreases from west to east and from north to south. Wells with severe interlayer heterogeneity are Degu 2, Wanggu 1, Gubeigu 1, Gubeigu 2, Gubeigu 3 etc. And wells with severe intralayer heterogeneity are Degu 2, Gubeigul, Gubeigu 2 etc. Such results have guiding significance to the coal-gas exploration in Jiyang Depression.

关 键 词：济阳拗陷 上古生界 煤成气 储层 非均质性 

分 类 号：TE122[石油与天然气工程—油气勘探]