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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >The Coalbed Methane Content of Ⅱ1 Coal Reservoir and Its Controlling Factors in Liangbei No.2 Coal Mine, Yuzhou Coalfield, Henan Province
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The Coalbed Methane Content of Ⅱ1 Coal Reservoir and Its Controlling Factors in Liangbei No.2 Coal Mine, Yuzhou Coalfield, Henan Province

机译：河南省禹州煤田良贝二号煤矿Ⅱ1型储层煤层甲烷含量及其控制因素

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The investigation on coalbed methane content and its controlling factors is the foundation to discuss the formation mechanism of coalbed methane reservoir and evaluate the producibility of coalbed methane. The Liangbei No.2 coal mine of Yuzhou coalfield is a mine that coal exploration was accomplished just now and prepared to mining. The coalbed methane resource is relatively abundant in the Ⅱ1 coal reservoir of the Lower Permian Shanxi formation, gas in-place is about 0.7×108 m3/km2. Based on the data obtained from coal exploration, the occurrence of coalbed methane content in Ⅱ1 coal reservoir is systematically described and the controlling factors of coalbed methane content is discussed. The investigation indicates: (1) the depth of air altered zone is great, and the occurrence of coalbed methane content is extraordinary hrterogeneous; (2) the open normal faults that formed during Yanshanian Orogeny are the main pathway for coalbed methane to escape; (3) the thickness of overburden strata above Ⅱ1 coal seam is the main factor that controls the regional distribution of coalbed methane. The larger the thickness, the higher the coalbed methane content; (4) in the area where the roof and floor of coal seam are mudstone and siltstone, coalbed methane content is exclusively high; (5) the deep stagnant zone of groundwater is favorable for coalbed methane accumulation.
机译：对煤层气含量及其控制因素的研究是探讨煤层气储层形成机理，评价煤层气可采性的基础。渝州煤田良北二号煤矿是刚刚完成煤炭勘探并准备开采的煤矿。下二叠统山西组Ⅱ1煤储层煤层气资源相对丰富，天然气储量约为0.7×108 m3 / km2。根据煤田勘探资料，系统地描述了Ⅱ1煤层中煤层气含量的存在，并探讨了煤层气含量的控制因素。调查表明：（1）气蚀带深度较大，煤层甲烷含量的发生非均质。 （2）燕山期造山过程中形成的开放性正断层是煤层气逸散的主要途径。 （3）Ⅱ1煤层上覆岩层厚度是控制煤层气区域分布的主要因素。厚度越大，煤层甲烷含量越高; （4）在煤层顶板为泥岩和粉砂岩的地区，煤层甲烷含量高。 （5）地下水的深度停滞带有利于煤层气的积聚。

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