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指出中国是世界上煤层气资源最丰富的国家之一。初步预测煤层埋深300～1500m范围内煤层气总资源量约25万亿m~3。认为中国煤层气成气条件有五种类型:区域岩浆热变质作用,局部热动力变质作用,深层水交替热变质作用,区域压实变质作用和构造应力变质作用;和煤层气气藏有四大类型:压力封闭型,承压水封堵型,顶板水网络状微渗滤封堵型和构造封闭型。根据煤层气选区评价原则,选出了八大煤层气勘探有利区和26个有利目标区。认为沁水盆地南斜坡晋城地区、鄂尔多斯盆地东斜坡吴堡地区是目前煤层气勘探最有利的目标,石油天然气集团公司在这两个地区都进行了勘探,前景非常可观。还指出,石油公司应加强煤层气的高产富集规律和选区评价研究,摸索出一套适合我国煤层气勘探的评价方法和特殊的工艺技术,尽快建立2～3个试验区,加紧地质研究和现场工艺技术试验,力争尽快拿到中国第一个大型煤层气气田——沁水煤层气气田。
He pointed out that China is one of the countries with the most abundant CBM resources in the world. The total coalbed methane resource in the range of 300 ~ 1500m is preliminarily predicted to be about 25 trillion m3. It is considered that there are five types of CBM gas-forming conditions in China: regional magmatic thermal metamorphism, local thermodynamic metamorphism, deep water alternating thermal metamorphism, regional compaction metamorphism and tectonic stress metamorphism; and CBM reservoirs have four major types Type: pressure closed type, pressure water seal type, roof water network micro-filtration plug type and structure closed type. According to the CBM evaluation criteria, eight CBM exploration favorable areas and 26 favorable target areas were selected. It is considered that Jincheng area on the southern slope of Qinshui Basin and Wubao area on the east slope of Ordos Basin are the most favorable targets for CBM exploration. The oil and gas group companies have conducted exploration in both areas and the prospect is very promising. Also pointed out that oil companies should strengthen the laws of high-yield and enrichment of coalbed methane and constituency evaluation study to explore a set of evaluation methods and special technology for CBM exploration in China, as soon as possible to establish 2 to 3 pilot areas, step up geological research and Site technology test, and strive to get China’s first large-scale CBM gas field - Qinshui CBM field.