沁水盆地安泽地区煤层气富集主控地质因素

发布时间：2018-06-25 09:07

本文选题：煤层气富集 + 煤阶　；参考：《煤田地质与勘探》2017年06期

【摘要】：通过对沁水盆地安泽区块煤层气地质条件和储层条件的深入分析,探讨了该区煤层气的富集规律及主要影响因素。研究发现,煤的岩石学特征、构造、顶底板岩性是影响煤层气富集的主要因素。总体上,安泽区块煤储层含气量受煤阶影响,表现为:煤的变质程度越高,吸附能力整体增强,含气量增大。局部区域,煤层气含量受煤层埋深、断层、褶皱及煤层顶底板岩性等综合因素的影响。在构造平缓带,煤层气含量随埋深增大而增大;在构造活动带,正断层上升盘含气量明显低于下降盘含气量,断层对煤层气的逸散作用明显。此外,泥岩顶底板封盖较砂岩顶底板封盖能力强。
[Abstract]:Based on the analysis of geological conditions and reservoir conditions of coalbed methane in Anze block of Qinshui Basin, the enrichment law and main influencing factors of coalbed methane in this area are discussed. It is found that the petrological characteristics of coal, structure and lithology of roof and floor are the main factors affecting the enrichment of coalbed methane. As a whole, the gas content of coal reservoir in Anze block is affected by coal rank, which shows that the higher the metamorphic degree of coal is, the stronger the adsorption capacity is and the gas content is increased. In the local area, the coal bed methane content is affected by the comprehensive factors such as coal seam depth, fault, fold and coal seam roof and floor slate. In the tectonic flat zone, the coalbed methane content increases with the increase of buried depth, and in the tectonic active zone, the gas content in the ascending face of the normal fault is obviously lower than that in the descending plate, and the effect of the fault on the emission of the coal bed methane is obvious. In addition, the sealing ability of mudstone roof and bottom plate is stronger than that of sandstone roof and bottom plate.
【作者单位】：中国地质大学(北京)煤层气国家工程中心煤储层实验室能源学院;兖州煤业股份有限公司;中国石油华北油田公司;中国地质图书馆;
【基金】：国家自然科学基金项目(41472137) 全国优秀博士学位论文作者专著资金(201253) 山西省煤基重点科技攻关项目(MQ2014-01)~~
【分类号】：P618.13

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