Langfang Petrochina Research Institute,Petroleum Exploration and Development,Langfang　 065007,China

为了提高中国煤层气勘探开发程度,促进煤层气产业发展,分析了中国煤层气勘探开发现状与面临的问题,提出1 200 m以深煤层蕴藏十分丰富的煤层气资源,且多与致密砂岩气叠合共生,展现了煤系天然气广阔的勘探开发前景。根据煤层气及煤系砂岩气开发特点,对煤层气及煤系砂岩气划分为自生自储型、内生外储型2类气藏模式,提出将煤系的煤层与砂岩互层段,统一作为目的层进行综合评价,在垂向上拓展勘探开发空间,显著增加资源丰度,同时煤层与砂岩立体压裂改造也比单一煤层压裂更能提高储层改造效果,并提出煤系天然气综合勘探开发工作建议。

For further improvement of the degree of coal-bed methane (CBM) exploration and development and accel- erating the development of CBM industry,the present situation and existing problems of CBM exploration and develop- ment are analyzed in detail in this paper. It is potential for prospecting and exploitation that the CBM resources of which burial depth deeper than 1 200 m are abundant and commonly with tight sandstone gas composite symbiosis in China. According to the development features of CBM and coal measures sandstone gas,there are two types of the gas reservoir models,the one,gas self-generated and self-stored in reservoir,the other,gas internally generated but exter- nally stored in reservoir. As a result,the coal seams and sandstone intervals should be unified as target layers integrat- ed studied,then,the CBM exploration area in vertical direction will be expanded,the resource abundance can be in- creased,and the reservoir stimulation effect is much better than fractured in only coal seams. Such suggests as explo- ring and developing these complex natural gas in deep coal measure strata for promoting the development of CBM in- dustry are finally presented.

国家科技重大专项资助项目(2011ZX05033-003)；

Li Wuzhong,Sun Bin,Sun Qinping,et al. Analysis on coal-bed methane development based on coal measure gas in China and its counter- measure[J]. Journal of China Coal Society,2016,41(1):67-71.