| 喷射式局部反循环绳索取心钻具 |
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| 引用本文： | 刘成才. 喷射式局部反循环绳索取心钻具[J]. 探矿工程, 2008, 35(9): 35-36 |
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| 作者姓名： | 刘成才 |
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| 作者单位： | 青海省有色地勘局八队 |
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| 摘 要： | 针对金矿复杂破碎地层钻探存在的岩心采取困难、孔内漏失严重等问题，改进绳索取心钻具，增加了局部反循环装置，研制出一套适应性广、取心可靠的可调喷射反循环钻具，提高岩心采取率，取得了良好的效果。介绍了该钻具的结构原理、适应范围及应用效果。
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| 关 键 词： | 绳索取心钻进；局部反循环；钻具；岩心采取率 |
| 收稿时间： | 2008-05-06 |
Wire-line Coring Drilling Tool with Local Rejecting Reverse Circulation |
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| LIU Cheng-cai. Wire-line Coring Drilling Tool with Local Rejecting Reverse Circulation[J]. Exploration Engineering:Rock & Soil Drilling and Tunneling, 2008, 35(9): 35-36 |
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| Authors: | LIU Cheng-cai |
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| Affiliation: | 8th Team of Qinghai Province Non-ferrous Metal Geo-exploration Bereau |
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| Abstract: | According to the difficulties of coring in complex broken gold formation and leakage in borehole, wire-line coring tool was modified by putting on local reverse circulation apparatus. The paper introduced the structure principles, application and the applying result. |
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| Keywords: | wire-line coring drilling local reverse circulation drilling tool coring rate |
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