煤层气是指储存在煤层中以甲烷为主要成分、以吸附在煤基质颗粒表面为主、部分游离于煤孔隙中或溶解于煤层水中的烃类气体，是煤的伴生矿产资源，属非常规天然气，是近一二十年在上崛起的洁净、优质能源和化工原料。
Coalbed methane refers to the hydrocarbon gas stored in coal seams, mainly composed of methane, adsorbed on the surface of coal matrix particles, partially free in coal pores or dissolved in coal seam water. It is an associated mineral resource of coal and belongs to unconventional natural gas. It is a clean, high-quality energy and chemical raw material that has emerged internationally in the past decade or two.
煤层气还有另外一个名字叫做，叫做“瓦斯”，煤层气在行业发展还是相当不错的。
There is another name for coalbed methane, called "gas", and the development of coalbed methane in the industry is quite good.
全球煤层气储量达268万亿立方米，目前已有74个国家发现蕴藏有煤炭资源，其中90%的煤层气分布在12个产煤国家，储备量前五的国家分别是：俄罗斯、加拿大、、美国和澳大利亚。的煤层气储备量位于世界第三，达31.46万亿方。

The global reserves of coalbed methane amount to 268 trillion cubic meters. Currently, 74 countries have discovered coal resources, with 90% of coalbed methane distributed in 12 coal producing countries. The top five countries with reserves are Russia, Canada, China, the United States, and Australia. China's coal bed methane reserves are the third largest in the world, reaching 31.46 trillion cubic meters.
煤层气主要是煤化作用过程晚期的产物，由于埋藏较浅或者受到晚期抬升作用的影响，次生生物气的混入较普遍。受赋存状态控制，盆地内煤层气具有向斜分布特征；受煤层发育地质时代和沉积环境控制，煤层气主要分布于石炭纪以来的沉积地层，主要包括石炭系—二叠系、三叠系—侏罗系、白垩系—古近系；受煤层区域分布和埋藏控制。
Coalbed methane is mainly a product of the late stage of coalification process. Due to shallow burial or the influence of late uplift, the mixing of secondary biogas is more common. Controlled by its occurrence state, coalbed methane in the basin exhibits a synclinal distribution characteristic; Controlled by the geological age and sedimentary environment of coal seam development, CBM is mainly distributed in the sedimentary strata since the Carboniferous, mainly including the Carboniferous Permian, Triassic Jurassic, Cretaceous Paleogene; Controlled by the regional distribution and burial of coal seams.
不同开发主体眼中，煤层气被赋予不同的意义。煤炭企业从安全角度、油气企业则从清洁能源的角度看待煤层气。事实上这两个特征很难分开。正是基于煤矿安全的重要意义，国家才对煤层气行业给予如此大的支持力度。也正是因为煤层气的清洁能源属性，才能形成一个从社会、环境到企业都有利可图的产业。
In the eyes of different development entities, CBM is endowed with different meanings. Coal companies view coalbed methane from a safety perspective, while oil and gas companies view it from a clean energy perspective. In fact, these two characteristics are difficult to separate. It is precisely based on the importance of coal mine safety that the country has given such great support to the coalbed methane industry. It is precisely because of the clean energy attribute of coalbed methane that an industry that is profitable from society, the environment, and enterprises can be formed.
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