摘要
杨家湾井田煤炭资源丰富,运用解析法对井田煤层气进行采样测试;根据甲烷含量等值线图分析煤层气分布规律,采用体积法估算煤层气资源量.结果表明:甲烷含量在井田东北部露头最低,在井田中深部及长春铺向斜轴部较高,影响甲烷含量的主要因素为地质构造、煤层厚度、顶板岩性、煤层露头及埋藏深度;探明井田内4、4下、5、6-1、6-1中、6-1下、6-2、6-2下、6-3、6-3下、7和8煤层煤层气资源量达52.77×108 m3.长春铺向斜及区域内呈北东或北北东向展布的宽缓向斜是煤层气勘查有利靶区,向斜轴部比翼部更有利于煤层气富集.
Based on the rich coal resources in Yangjiawan minefield,using the analytic method to sample and test the coalseam,we analyzed the regularities of distribution of CBM according to methane contentisogram,and estimated the resources of CBM by volumetric method.The results showed that the methane content is the lowest in the northeastern field of outcrop,and higher in the deep and the Changchunpu syncline axis,and geological structure,coal thickness,roof lithology,seam outcrop and buried depth are the main factors which affect methane content.Exploring the CBM resource of 4,4L,5,6-1,6-1M,6-1L,6-2,6-2L,6-3,6-3L,7and 8coal seam is up to 52.77×108 m3 in this minefield.Research suggests that Changchunpu syncline and NE,NNE trapped syncline in this area are deemed to target region of CBM for prospecting,CBM resource in central part is more than that in the wing of syncline.
出处
《东北石油大学学报》
CAS
北大核心
2014年第6期30-36,99,共8页
Journal of Northeast Petroleum University
基金
贵州省省长基金项目(20090179)
贵州大学特色重点学科建设基金项目(2013005)
