中硬煤层瓦斯抽采定向长钻孔高效钻进工艺
投稿时间：2014-04-17  修订日期：2014-08-04  点此下载全文
引用本文：杨虎伟,许超,董萌萌,等.中硬煤层瓦斯抽采定向长钻孔高效钻进工艺[J].钻探工程,2014,41(11):20-23,27.
YANG Hu-wei,XU Chao,DONG Meng-meng,et al. Efficient Drilling Technology of Long Directional Borehole for Gas Drainage in the Medium Hard Coal Seam[J]. Drilling Engineering, 2014,41(11):20-23,27.
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作者单位E-mail
杨虎伟* 中煤科工集团西安研究院有限公司 yanghuwei@cctegxian.com 
许超 中煤科工集团西安研究院有限公司 xuchao@cctegxian.com 
董萌萌 中煤科工集团西安研究院有限公司 dongmengmeng@cctegxian.com 
赵建国 中煤科工集团西安研究院有限公司 zhaojianguo@cctegxian.com 
牟培英 中煤科工集团西安研究院有限公司 moupeiying@cctegxian.com 
康奇岳 中煤科工集团西安研究院有限公司 kangqiyue@cctegxian.com 
基金项目:“十二五”国家科技重大专项“中硬煤层大功率定向钻进技术与装备”（20112X05041-001）
中文摘要:钻孔抽采瓦斯是治理瓦斯最直接有效的手段。根据煤矿井下本煤层定向钻进技术原理，提出一种适用于中硬煤层定向长钻孔的高效钻进工艺，该工艺是将复合钻进技术与煤矿井下定向钻进技术相结合实现定向长钻孔高效钻进的一种钻进方法。通过现场试验证明，该方法能使钻孔孔壁平滑，防止憋泵、卡钻，减少事故处理时间，提高钻孔成功率和钻进效率。经分析，使用该技术后，与常规定向钻进相比，平均机械钻速提高了26.8%，该技术为今后煤矿井下定向钻进技术的推广提供了新思路。
中文关键词:中硬煤层  瓦斯抽采  定向长钻孔  高效钻进  定向钻进
 
Efficient Drilling Technology of Long Directional Borehole for Gas Drainage in the Medium Hard Coal Seam
Abstract:The gas drainage with boreholes is the most direct and effective means for gas control. According to the principle of directional drilling technology in coal mine underground, an effective drilling technology applicable to medium hard coal seam is put forward to realize effective long directional drilling by combining compound drilling technology and directional drilling technology in coal mine underground. The field test proves that this method can make the borehole wall smooth, prevent pump suffocation and sticking, reduce the accident processing time and improve the successful drilling rate and drilling efficiency. By the application of this technology, average ROP increases by 26.8% compared with the conventional directional drilling.
keywords:medium hard coal seam  gas drainage  long directional borehole  efficient drilling  directional drilling 〖JP〗technology
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