煤层气井压裂对井下瓦斯抽采量与涌出浓度影响研究  

Study on Fracturing of Coal Bed Methane Well Affected to Has Drainage Value and Gas Emission Concentration in Underground Mine

作　　者：任建刚[1] 宋志敏[1,2] 刘高峰[1] 张子戌[1] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]河南工程学院资源与环境工程系,河南郑州451191

出　　处：《煤炭工程》2013年第11期96-98,共3页Coal Engineering

基　　金：国家自然科学基金资助项目(41072114);河南省基础与前沿技术研究计划项目(132300413204);河南省瓦斯地质与瓦斯治理重点实验室--省部共建国家重点实验室培育基地开放基金项目(WS2012B08)

摘　　要：为了确保煤矿安全、高效生产,采用地面煤层气井水力压裂增透工艺提高煤层透气性,通过利用嵌入式人工裂缝实时监测技术对煤层气井压裂所产生的裂缝形态、压裂有效半径进行了实时监测评价,考察了S2205胶带巷24个钻场瓦斯抽采量,结果显示：压裂区较未压裂区提高了2～4倍,但压裂提高瓦斯抽采量的同时也导致了钻场瓦斯涌出浓度的增加.In order to ensure the mine safety and high - efficiency production, the hydraulic fracturing and permeability improving technology of the coal bed methane well at the surface ground was applied to improve the permeability of the seam. The real time monitoring and measuring technology of the insetted type artificial fractures was applied to the real time monitoring and measuring evaluation on the fracture patterns occurred by the pressurized fracturing of the coal bed methane well and the effective fracture radius. The gas drain/Ige quantities of 24 drilling fields in the S2205 belt conveyor gateway were investigated. The results showed that in comparison with the non fracturing area, the gas drainage quantity in the pressurized fracturing area would be increased by 2 -4 times. The fracturing would not only increase the gas drainage quantity, but could make the gas emission concentration in the drilling field increased.

关 键 词：煤层气 水力压裂 实时监测 抽采量 涌出浓度 

分 类 号：TD712.6[矿业工程—矿井通风与安全]