| 王家庄北沟多金属矿区钻探施工技术 |
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| 引用本文： | 于志坚,耿印,于保国,邢运涛,王景章,丁国东,王越,刘存.王家庄北沟多金属矿区钻探施工技术[J].探矿工程,2019,46(12):29-34. |
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| 作者姓名： | 于志坚 耿印 于保国 邢运涛 王景章 丁国东 王越 刘存 |
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| 作者单位： | 河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队,河北省地矿局第四地质大队 |
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| 摘 要： | 在河北省承德县王家庄北沟钼多金属矿钻探施工中，钻遇岩石以燧石条带白云岩、石英岩为主，岩石可钻性级别高，钻遇地层硬、脆、碎，钻头打滑严重，孔壁坍塌和漏失，钻进效率极低。为提高钻进效率，经取样分析岩性后，专门定制了适用于该地层的钻头。采用了多种方法迫使钻头出刃，并根据不同孔段地层岩性选择不同钻进工艺参数和钻井液体系。总结出适于本矿区地层的钻进工艺参数，使用不同性能的钻井液，起到了较好的护壁堵漏作用，提高了钻进效率。
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| 关 键 词： | 钻探技术 “打滑”地层 钻头优选 钻进工艺参数 破碎地层 护壁堵漏 钻井液 |
| 收稿时间： | 2019/8/16 0:00:00 |
| 修稿时间： | 2019/12/10 0:00:00 |
Drilling technology for the Beigou polymetallic mining area in Wangjiazhuang |
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| YU Zhijian,GENG Yin,YU Baoguo,xingyuentao,WANG Jingzhang,DING Guodong,WANG Yue and LIU Cun.Drilling technology for the Beigou polymetallic mining area in Wangjiazhuang[J].Exploration Engineering(Drilling & Tunneling),2019,46(12):29-34. |
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| Authors: | YU Zhijian GENG Yin YU Baoguo xingyuentao WANG Jingzhang DING Guodong WANG Yue and LIU Cun |
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| Institution: | No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau,No. 4 Geological Brigade of Hebei Geological and Mineral Bureau |
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| Abstract: | In drilling at Beigou Molybdenum Polymetallic Mine, Wangjiazhuang, Chengde County, Hebei Province, the main rock encountered was chert strip dolomite and quartzite with strong drillability, and they were hard, brittle, broken and seriously slippery, leading to very low drilling efficiency. In order to improve drilling efficiency, the lithology was assayed through sampling the rock with the drill bit custom-made for the formation. A variety of methods were adopted to force exposure of the cutting elements, and different drilling parameters and drilling fluid systems were selected for the lithology over different sections of the borehole. This paper summarizes the drilling parameters suitable for the formation in this mining area, together with the drilling fluids of different performance for wall protection and leakage plugging, and higher drilling efficiency. |
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| Keywords: | drilling technology slipping formation bit selection drilling parameters broken formation wall protection drilling fluid |
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