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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 >Accumulation of Coalbed Methane in the Shuangquan Coal Mine of Anyang Coal District, Henan Province
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Accumulation of Coalbed Methane in the Shuangquan Coal Mine of Anyang Coal District, Henan Province

机译：河南省安阳煤区双泉煤矿煤层气成藏

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摘要

The coalbed methane resource is abundant in the II1 coal reservoir of Shuangquan coal mine, gas resource in-place is about 2×108 m3/km2. Based on data obtained from exploration for coal and coalbed methane and coal mine, the coalbed methane preservation and accumulation are systematically discussed in this paper. Coalbed methane content is high, about 10-33.5 m3/t, and higher in the south area than in the north area, east than west, which is controlled by hydrodynamics and burial depth of coal seam. The slow runoff zone and stagnant zone are the favorable area for coalbed methane accumulation. The roof and floor that is mainly made up of mudstone and siltstone provide favorable condition for coalbed methane accumulation. The sealing fault with striking NNE and the good juxtaposition are the favorable factors of coalbed methane accumulation. Reservoir pressure is high and pressure coefficient is 0.9-1.02; the capability of adsorption is large with Langmuir volume is 24.37-36.67 m3/t. Permeability is relatively lower with 0.0085-0.93×10-3 μm2 because coal was seriously deformed. The geological condition is favorable for accumulation of coalbed methane in this area, but under strong tectonic stresses, coal reservoir became mylonitic coal, and permeability is very low. Coalbed methane development with conventional technology is probably difficulty.
机译：双泉煤矿II1煤储层煤层气资源丰富，原地瓦斯资源量约为2×108 m3 / km2。本文基于对煤，煤层气和煤矿的勘探数据，系统地探讨了煤层气的保存与成藏问题。煤层气含量高，约为10-33.5 m3 / t，南部地区高于北部地区，东部地区高于西部地区，这受流体动力学和煤层埋藏深度的控制。缓慢的径流带和停滞带是煤层气聚集的有利区域。主要由泥岩和粉砂岩组成的顶板和底板为煤层气的聚集提供了有利条件。 NNE突出的密封缺陷和良好的并置性是煤层气成藏的有利因素。储层压力高，压力系数为0.9-1.02; Langmuir体积为24.37-36.67 m3 / t时，吸附能力大。渗透率相对较低，为0.0085-0.93×10-3μm2，这是因为煤发生了严重变形。地质条件有利于该地区煤层气的聚集，但在强烈的构造应力作用下，煤储层变成了隆突型煤，渗透率很低。用常规技术开发煤层气可能很困难。

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