| 螺杆钻侧钻分支绕障技术处理绳索取心钻孔事故 |
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| 引用本文： | 李光华.螺杆钻侧钻分支绕障技术处理绳索取心钻孔事故[J].探矿工程,2011,38(11):32-34. |
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| 作者姓名： | 李光华 |
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| 作者单位： | 湖南省煤田地质局第一勘探队,湖南耒阳421800 |
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| 摘 要： | 绳索取心钻进施工中常出现卡钻、埋钻和钻具断裂事故。一些孔内事故处理需要很长时间,尤其是深孔事故发生后投入了大量的财力、人力进行处理,最终还不一定能取得成功。在此情况下,采用侧钻绕障而避开孔内事故钻具则是一种理想的选择,可大大缩短事故处理时间,避免钻孔报废带来的损失。重庆北碚龙车勘探区ZK6-2孔运用螺杆定向钻进侧钻分支绕障方法取得成功,并积累了宝贵的经验。
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| 关 键 词： | 螺杆钻 侧钻 分支绕障 孔内事故 绳索取心钻进 |
| 收稿时间： | 2011/5/12 0:00:00 |
| 修稿时间： | 2011/8/25 0:00:00 |
Treatment of Accident of Borehole for Wire-line Coring with Obstacle-avoiding Branch by PDM Sidetracking |
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| LI Guang-hua.Treatment of Accident of Borehole for Wire-line Coring with Obstacle-avoiding Branch by PDM Sidetracking[J].Exploration Engineering(Drilling & Tunneling),2011,38(11):32-34. |
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| Authors: | LI Guang-hua |
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| Institution: | LI Guang-hua(1st Exploration Team,Coal Geological Bureau in Hunan Province,Leiyang Hunan 421800,China) |
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| Abstract: | Drill rod sticking,burying and breaking are common accidents in wire-line coring drilling.Obstacle-avoiding by sidetracking is an ideal choice,accident treating time can be greatly shortened to save the borehole from being abandoned and reduce the loss brought by accident.The paper introduced a case in Chongqing,PDM directional sidetracking was used for obstacle-avoiding branch with success. |
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| Keywords: | PDM sidetracking obstacle-avoiding branch accident in borehole wire-line coring drilling |
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