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鄂尔多斯盆地东南缘煤层气储集特征研究
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摘要
以位于鄂尔多斯盆地东南缘的韩城—澄城地区各矿区已有煤田地质资料、新钻探煤层气井、野外露头、煤光片镜下观察等相关资料为依据,分析了煤层的展布及埋深、煤的有机显微组分、煤孔隙类型与结构等特征,评价了煤层的生气能力;利用煤层含气性测试数据做了煤层含气量图;结合构造特征、煤层厚度和泥岩盖层厚度等特征对煤层含气性控制因素进行了分析。综合以上各要素,分析了研究区煤层气储集特征。
Based on the geological data of Hancheng-Chengcheng area along the southeastern fringe of Ordos Basin,as well as related data of new coalbed methane well,outcrop observation,we analyzed the coal seam distribution,buried depth,organic micro-components of coal,types and structure of coal pores,and assessed the gas generation capability of the coal seam.Gas content graph was drawn on the data of gas containing features of coal seam.We integrated structure features,coal seam thickness,and mudstone caprock thickness to study the main controlling factors of gas-bearing capacity.All factors were then synthesized to explore the storing characteristics of the coalbed methane.
引文
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