鄂尔多斯盆地低变质煤的煤层气抽采潜力-以彬长大佛寺矿为例  

CBM Drainage Potential of Lowly Metamorphosed Coal in Ordos Basin-Using Dafuosi Mine in Binchang As An Example

作　　者：张培河 原德胜 张进军 

机构地区：[1]中煤科工集团西安研究院,陕西710054 [2]陕西彬长矿业集团有限公司,陕西712000 [3]陕西彬长矿业集团有限公司大佛寺矿,陕西713500

出　　处：《中国煤层气》2011年第5期13-16,共4页China Coalbed Methane

基　　金：国家科技重大专项大型油气田及煤层气开发(编号:20011ZX05040);高丰度煤层气富集机制及提高开采效率基础研究(2009CB2196)资助

摘　　要：鄂尔多斯盆地低变质煤的煤层气资源量丰富,部分地区的煤层气勘探已显示出较大潜力。彬长矿区大佛寺矿属于高瓦斯矿井,矿井瓦斯涌出量高达155.49m3/min。大佛寺矿主要为低变质的长焰煤,煤层发育,目标煤层稳定,厚度大、埋藏浅,气含量相对较高,煤层气资源量丰富,地面煤层气抽采潜力大;主要目标煤层透气性系数高,属于可以抽采煤层,井下采煤工作面瓦斯抽采率超过73.2%,地面煤层气抽采气井产气量达到工业气流,均显示出较好的抽采潜力。CBM resources of low-rank metamorphosed coal in Ordos basin is abundant,and exploration of CBM in part of the basin has shown great potential.Dafuosi mine in Binchang mining area is highly gaseous mine,the maximum emission of coal mine gas reaching 155.49m3/min.Coal in Dafuosi mine is mainly low-rank metamorphosed long-flame coal.Coal seams are well-developed.The target coal seams are regular,with great thickness,shallow burial depth,and relatively high gas content.The CBM resources are abundant,and the potential for surface extraction is high. The permeability factor of the major target seams is high.These seams are extractable.The gas drainage rate of underground coal face exceeds 73.2%.The gas production from surface well reaches commercial gas flow,indicating good drainage potential.

关 键 词：大佛寺煤矿 低煤级 煤层气 资源潜力 

分 类 号：TE37[石油与天然气工程—油气田开发工程]