煤层气田三级降压提高采收率工艺技术及应用  

Technology and Application of Three-stage Pressure Reduction for Enhanced Oil Recovery in CBM Field

作　　者：秦绍锋[1] QIN Shao-feng(China United Coalbed Methane Corporation Ltd.,Beijing 100011,China)

机构地区：[1]中联煤层气有限责任公司

出　　处：《煤炭技术》2019年第11期29-32,共4页Coal Technology

摘　　要：煤层气田进入产气衰减阶段后,有效缓解气量持续递减是生产面临的主要问题。潘河区通过"三级降压提高采收率工艺技术"的实施,有效降低煤层气井井口流动压力、阀组流动压力及进入集气站流动压力,增加了单井产气量、阀组产气量及集气站供气量,进一步地提高了煤层气藏的采收率。How to effectively mitigate gas continuous decline is the main problem we are facing when the CBM field enters the decay stage of gas production.The"three-stage pressure reduction for enhanced oil recovery"has been applied in the Panhe block.With the flow pressure at the wellhead of the CBM wells,the flow pressure of the valve groups and the flow pressure into the gas gathering station decrease the gas production of a single well,the valve groups,and the gas supply of the gas gathering station increase.As a result,the recovery of CBM reservoirs has been further improved.

关 键 词：煤层气 三级降压 采收率 

分 类 号：TD845[矿业工程—煤矿开采] TE37[矿业工程—矿山开采]