摘要
为了进一步探讨地面水力压裂钻井对煤层瓦斯的影响,通过现场试验和数据统计研究了地面压裂增透技术对煤层瓦斯抽采、突出危险性大小、钻孔施工、掘进时瓦斯涌出的影响。研究结果表明:地面压裂井提高了煤层的透气性,使得瓦斯抽采量较大幅度提高、突出危险参数明显降低、钻孔成孔率也得到相应提高;掘进期间的瓦斯涌出量比未压裂区域增大,掘进时需要对瓦斯加强管控。
In order to further explore the ground hydraulic fracturing drilling effect on coal seam gas,studies the ground fracturing wells of gas drainage in coal seam with outburst danger, and the influence of drilling construction, excavation of gas emission by field test and data statistics.The research results show that: the ground fracturing well improve the permeability of coal seam, the gas drainage quantity increased, the outburst dangerous parameters decreased and the pore forming rate can be improved accordingly. The gas gushing volume ratio during the driving without fracturing area is enlarged. The gas management was strengthen attention in tunneling period.
出处
《煤炭技术》
CAS
北大核心
2015年第3期129-131,共3页
Coal Technology
基金
"十二五"国家科技支撑计划项目(2012BAK04B01)
中国煤炭科工集团有限公司科技创新基金(2013ZD002)
中煤科工集团重庆研究院有限公司自立科研开发项目(2012ZDXM10)
关键词
压裂井
瓦斯抽采
瓦斯涌出
fracturing well
gas drainage
gas emission
