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首页> 外文会议>International coalbed methane symposium >Geological Control and Their Mechanism of Coal Reservoir Petrography and Physics to Coalbed Methane Occurrence in China
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Geological Control and Their Mechanism of Coal Reservoir Petrography and Physics to Coalbed Methane Occurrence in China

机译：中国煤储层岩石学和物理对煤层气赋存的地质控制及其机理

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摘要

Based upon the data of major coal mining and exploring districts in China, the correlation of coal petrological and physical factors such as coal rank, lithotype and maceral to the coal methane content, absorption and permeability was summed up, and their controlled-gas mechanisms was discussed. It was found that the enveloping line of the average methane content to coal rank develop in coalification states, the remarkable developments of which coincide greatly with coalification jumps, that the areas with higher average methane content occur in a approximately equal latitudinal gap. Thus, there is a critical vitrinite content in the correlation of coal Langmuir volume to vitrinite content in coal reservoirs. It was pointed out that the development of coal physical and chemical structure is the reason why the coalbed methane occurrence is controlled in various coalification stages. Otherwise, the thought on the coalbed methane controlled by coal sedimentation would be practically valuable in some degree for predicting the heteroeneity of coal reservoir permeability.
机译：根据中国主要煤矿区和勘探区的数据，总结了煤的物性，煤级，岩性和岩性等煤理学因素与煤层气中甲烷含量，吸收率和渗透率的相关性，其受控气机理为：讨论过。发现在煤化状态下，平均甲烷含量向煤阶的包络线发展，其显着变化与煤化跃变高度吻合，平均甲烷含量较高的区域出现在大致相等的纬向缝隙上。因此，在煤储层中，Langmuir煤体积与镜质含量的相关性中存在临界的镜质含量。有人指出，煤理化结构的发展是在各个煤化阶段控制煤层气发生的原因。否则，关于通过煤沉降控制煤层气的思想在某种程度上对预测煤储层渗透率的非均质性具有实用价值。

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