煤炭与化工2024，Vol.47Issue(8)：130-133,4.DOI:10.19286/j.cnki.cci.2024.08.029
高阶碎软煤层氮气/空气复合定向钻进技术研究
Research on nitrogen/air composite directional drilling technology in high-order broken soft coal seam
张文青 1李雷 2杜可 1焦小建3
作者信息
- 1. 山西长平煤业有限责任公司,山西高平 048411
- 2. 河南理工大学能源学院,河南焦作 454003||河南理工产业技术研究院有限公司,河南焦作 454003
- 3. 山西晋城煤业集团 勘察设计院有限公司,山西 晋城 048004
- 折叠
摘要
Abstract
Aiming at the problems of difficult construction,low hole-forming rate,CO overrun and fire in the hole of gas extraction borehole in the soft area of anthracite in Jincheng mining area,a nitrogen/air composite directional drilling technology is proposed.Starting from the technical principle and process method,the influence of process parameters such as air pressure and air supply on the construction of composite directional drilling is analyzed.The field test was carried out in 4326 working face of Changping Coal Mine.A total of 42 main holes were completed,and the cumulative footage was 6454.5 m.The hole forming rate of 300 m and above was 79.5％,the hole forming rate of 200 m and above was 85.7％,and the hole forming rate of 150 m and above was 94.5％.The effect was remarkable.关键词
碎软煤层/复合定向钻进/瓦斯抽采Key words
broken soft coal seam/compound directional drilling/gas extraction分类
矿山工程引用本文复制引用
张文青,李雷,杜可,焦小建..高阶碎软煤层氮气/空气复合定向钻进技术研究[J].煤炭与化工,2024,47(8):130-133,4.
