临兴地区山西组致密砂岩气开采潜力地质评价方法  

Geological Evaluation Method of Tight Sandstone Gas Exploitation Potential in Shanxi Formation in Linxing Area

作　　者：吴蒙 朱超[2] 秦云虎[1] 秦勇 申建[2] 赵恒[1] 朱士飞 Wu Meng;Zhu Chao;Qin Yunhu;Qin Yong;Shen Jian;Zhao Heng;Zhu Shifei(Jiangsu Mineral Resources and Geological Design and Research Institute,Xuzhou 221006,Jiangsu,China;Key Laboratory of Coaled Methane Resource and Reservoir Formation Process(China University of Mining&Technology),Ministry of Education,Xuzhou 221008,Jiangsu,China)

机构地区：[1]江苏地质矿产设计研究院,江苏徐州221006 [2]煤层气资源与成藏过程教育部重点实验室(中国矿业大学),江苏徐州221008

出　　处：《吉林大学学报（地球科学版）》2020年第4期991-1002,共12页Journal of Jilin University：Earth Science Edition

基　　金：国家科技重大专项项目(2016ZX05066-01-04);中国煤炭地质总局科技项目(ZMKJ-2018-11)。

摘　　要：为了进一步开发煤系致密砂岩气,对影响致密砂岩气开采潜力的各种因素进行了综合研究,确立了临兴地区山西组致密砂岩气开采潜力评价的3个二级指标(富集、高渗及可采性)及10个三级指标。根据层序地层体系域发育程度,采用模糊决策两两矩阵和灰色关联分析相结合的方法建立了致密砂岩储层评价模型,利用层序地层单元对砂岩储层进行评价,实现了有利储层的精细划分。结果表明:两两矩阵方法与灰色关联分析方法相结合既提高了“高渗”类别6个三级指标数据之间的关联性,又减少了两两比较法的主观性对参数权重产生的误差;结合层序地层体系域中煤、砂体展布规律,使储层划分、评价更加准确。研究区西南部为山1段开采潜力富集区,东北部为山2段开采潜力富集区。In order to further develop the tight sandstone gas in coal measures,a comprehensive research on various factors affecting the exploration potential of tight sandstone gas was conducted,and three secondary indicators(enrichment,hypertonicity,recoverability)and ten tertiary indicators were established for the evaluation of the tight gas potential of Shanxi Formation in Linxing area,northeast Ordos basin.Based on the development degree of sequence stratigraphic system,combined with fuzzy decision matrix and grey correlation analysis,the evaluation model of tight sandstone reservoir was established.Through sequence stratigraphic units,a fine division of favorable reservoirs is realized.The results show that the combination of the pairwise matrix method and the gray correlation analysis method not only improves the correlation between the data of six tertiary indicators in the“hypertonic”category,but also reduces the error caused by the subjectivity of the pairwise comparison method which depends on parameter weight.Combined with the distribution of coal and sand bodies in the sequence stratigraphic system tract,the reservoir division and evaluation are more accurate.It is concluded that the enrichment area of tight sandstone gas in Shan 1Section is in the southwest,and in Shan 2Section is in the northeast of the study area.

关 键 词：层序地层单元 致密砂岩储层 评价参数 两两矩阵法 灰色关联分析法 山西组 临兴地区 

分 类 号：TE348[石油与天然气工程—油气田开发工程] P618.13[天文地球—矿床学]