太原西山煤田煤储层含气性分布规律及控制因素

发布时间：2018-03-09 19:35

本文选题：西山煤田　切入点：含气性　出处：《煤炭科学技术》2017年02期 　论文类型：期刊论文

【摘要】：为了实现寻找西山煤田煤层气开发有利区,把西山煤田西北部的马兰矿、屯兰矿和东曲矿作为研究区,采用灰色关联度分析等数理统计方法,研究了西山煤田煤储层含气性分布规律及其地质主控因素。结果表明:平面上,研究区可划分为向斜控制区和断层控制区2个不同的局部构造分区,研究区中部煤层含气量较高;纵向上,研究区8号煤层的含气量最高,其次为9号煤层、2号煤层。研究区除西南部含气量受风氧化作用控制外,其余地区含气性的控制因素按重要性排序依次为:局部构造、煤层埋深、顶板厚度和煤的岩石学特征。研究区中部的地层平缓区,局部断层多发育为封堵性断层且煤层埋藏较深,导致该区具备良好的煤层气保存条件,导致煤层含气量较高,有利于煤层气开发。
[Abstract]:In order to find a favorable area for coalbed methane development in Xishan coalfield, Ma Lan, Tunlan and Dongqu mines in the northwest of Xishan coalfield are regarded as study areas, and grey correlation degree analysis and other mathematical statistical methods are used. In this paper, the distribution law of gas-bearing properties of coal reservoirs in Xishan coalfield and the main geological control factors are studied. The results show that the study area can be divided into two different local tectonic zones: syncline control area and fault control area. In the middle of the study area, the gas content of coal seam No. 8 is the highest, followed by coal seam No. 9 and coal seam No. 2. The gas content in the study area is controlled by wind oxidation in the southwest of the study area. The controlling factors of gas-bearing in other areas are in order of importance: local structure, coal seam depth, roof thickness and petrological characteristics of coal. Most of the local faults are plugging faults and the coal beds are buried deeply, which leads to good conditions for the preservation of coalbed gas in this area, which leads to the higher gas content of coal beds, which is beneficial to the development of coalbed methane.
【作者单位】：中国地质大学(北京)能源学院;
【基金】：国家自然科学基金资助项目(41472137) 山西省煤基重点科技攻关资助项目(MQ2014-01) 全国优秀博士学位论文作者专项资金资助项目(201253)
【分类号】：P618.13

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