中硬煤层瓦斯抽采定向长钻孔高效钻进工艺
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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。
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.
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.
引文
[1]石智军,姚宁平,叶根飞.煤矿井下瓦斯抽采钻孔施工技术与装备[J].煤炭科学技术,2009,37(9):1-4.
[2]郝世俊.沿煤层定向长钻孔施工技术[A].中国煤炭学会煤炭建设与岩土工程专业委员会.矿山建设工程新进程—2006全国矿山建设学术会议文集(下册)[C].江苏徐州:中国矿业大学出版社,2006.
[3]杨旭,黄寒静,李乔乔.定向长钻孔施工技术在急倾斜煤层中的应用[J].煤炭科学与技术,2012,40(10):80-83.
[4]石智军,董书宁,姚宁平,等.煤矿井下近水平随钻测量定向钻进技术与装备[J].煤炭科学技术,2013,41(3):1-6.
[5]许超.煤矿瓦斯抽采定向长钻孔高效成孔工艺研究[J].金属矿山,2011(6):490-492.
[6]祝靖.国内大位移井轨迹控制中降低摩阻技术现状及应用分析[J].西部探矿工程,2013(10):51-54.
[7]吴捷.钻井提速技术研究及其在准东地区的应用[D].湖北荆州:长江大学,2013.
[8]石智军,李泉新,许超.煤矿井下随钻测量定向钻进技术及应用[J].地质装备,2013,14(6):32-36.
[9]何建华,张进军,昝军才,等.水平定向钻孔在大佛寺煤矿瓦斯抽采中的优势探讨[J].探矿工程(岩土钻掘工程),2012,39(8):36-38,53.
[10]石智军,董书宁,姚宁平,等.煤矿井下近水平随钻测量定向钻进技术与装备[J].煤炭科学技术,2013,03:1-6.
[2]郝世俊.沿煤层定向长钻孔施工技术[A].中国煤炭学会煤炭建设与岩土工程专业委员会.矿山建设工程新进程—2006全国矿山建设学术会议文集(下册)[C].江苏徐州:中国矿业大学出版社,2006.
[3]杨旭,黄寒静,李乔乔.定向长钻孔施工技术在急倾斜煤层中的应用[J].煤炭科学与技术,2012,40(10):80-83.
[4]石智军,董书宁,姚宁平,等.煤矿井下近水平随钻测量定向钻进技术与装备[J].煤炭科学技术,2013,41(3):1-6.
[5]许超.煤矿瓦斯抽采定向长钻孔高效成孔工艺研究[J].金属矿山,2011(6):490-492.
[6]祝靖.国内大位移井轨迹控制中降低摩阻技术现状及应用分析[J].西部探矿工程,2013(10):51-54.
[7]吴捷.钻井提速技术研究及其在准东地区的应用[D].湖北荆州:长江大学,2013.
[8]石智军,李泉新,许超.煤矿井下随钻测量定向钻进技术及应用[J].地质装备,2013,14(6):32-36.
[9]何建华,张进军,昝军才,等.水平定向钻孔在大佛寺煤矿瓦斯抽采中的优势探讨[J].探矿工程(岩土钻掘工程),2012,39(8):36-38,53.
[10]石智军,董书宁,姚宁平,等.煤矿井下近水平随钻测量定向钻进技术与装备[J].煤炭科学技术,2013,03:1-6.