低渗透煤层中气相压裂技术的增透效果研究

Low Permeability Coal Seam Gas- phase Fracturing Technology of Anti- reflection Effect Research

文章简要介绍了一种新型煤层增透技术——二氧化碳气相压裂,并通过现场试验测试了试验区域原始煤层与气相压裂后有效抽采半径与钻孔瓦斯抽采量。通过数据分析认为,原始煤层有效抽采半径为58 d达到1.5 m,实施气相压裂后,煤层有效抽采半径为57 d达到3 m,抽采钻孔有效抽采半径有明显增加,并且气相压裂后钻孔瓦斯抽采量提高2倍以上。

This paper briefly introduces a new technology which can increase seam permeability,then test the effective drainage radius and gas drainage quantity in the original coal seam and the coal seam after gas stimulation. Through analysis the data can learn that the effective drainage radius in the original coal seam reaches 1. 5 m after drainage 58 days,the effective drainage radius in the gas stimulation coal seam can reaches 3 m after drainage 57 days,the effective drainage radius increase in the gas stimulation coal seam,gas drainage quantity increased by more than 2 times.