| 预飘措施在复杂地层中深孔钻探中的运用 |
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| 引用本文： | 侯晓东,张艳芳.预飘措施在复杂地层中深孔钻探中的运用[J].金属矿山,2009,39(10):114. |
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| 作者姓名： | 侯晓东 张艳芳 |
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| 作者单位： | 1.江铜集团地勘工程有限公司；2.武警警种指挥学院 |
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| 基金项目： | 国家危机矿山资源接替项目 |
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| 摘 要： | 银山铜铅锌金银多金属矿区的地层是以千枚岩为主的，由于千枚岩片理极为发育，产状变化大，因此，以往在中深孔钻探施工过程中，均存在着钻孔弯曲度超规范的情况，严重制约着钻孔质量。为了有效解决这一难题，提高钻孔质量和探矿效果，组织进行了技术攻关，采取以预飘为主的措施，取得较好成效。
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| 关 键 词： | 钻孔倾角 预飘 钻探 |
Application of Pre-floating Measures in Deep-hole Drilling in the Complex Strata |
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| Hou Xiaodong,Zheng Yanfang.Application of Pre-floating Measures in Deep-hole Drilling in the Complex Strata[J].Metal Mine,2009,39(10):114. |
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| Authors: | Hou Xiaodong Zheng Yanfang |
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| Affiliation: | 1.Jiangxi Copper Group Geological Exploration Engineering Co.，Ltd.；2.The Services Command College of Chinese Armed Police Force |
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| Abstract: | The strata in Yinshan Au-Cu lead-zinc multi-metal mine are mainly in form of phyllite.Due to the complex schistosity of phyllite and big occurrence change，the degree of borehole curvature is over norms in deep-hole drilling construction process，which seriously hampered the drilling quality.In order to effectively resolve this problem and improve the drilling quality and exploration results，a technical breakthrough is made，where pre-floating measures are adopted with better results.
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| Keywords: | Dip angle in drill-hole Pre-floating Drilling |
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