| 反循环连续取心钻进中水力输岩机理的研究 |
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| 引用本文： | 张希浩,冯德强.反循环连续取心钻进中水力输岩机理的研究[J].地球科学,1990,15(4):461-468. |
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| 作者姓名： | 张希浩 冯德强 |
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| 作者单位： | 中国地质大学探工系
(张希浩，冯德强)，中国地质大学探工系(韦念龙) |
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| 摘 要： |
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| 关 键 词： | 反循环钻进 水力输出 连续取心 |
RESEARCH ON THE MECHANISM OF HYDRODYNAMIC TRANSPORT OF THE CORE IN COURSE OF REVERSE CIRCULATION DRILLING |
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| Zhang Xihao Feng Deqiang Wei Nianlong.RESEARCH ON THE MECHANISM OF HYDRODYNAMIC TRANSPORT OF THE CORE IN COURSE OF REVERSE CIRCULATION DRILLING[J].Earth Science-Journal of China University of Geosciences,1990,15(4):461-468. |
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| Authors: | Zhang Xihao Feng Deqiang Wei Nianlong |
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| Abstract: | The paper reveals the substance of conveyance of drilled - out rock along the central duct by hydraulic action through testing and theoretical analysis. It has found the mutual ralation among the central duct, core state and hydraulic parameters, and quantitatively determined the reasonable hydraulic parameters according to the velocity ratio K (the ratio between up veloci-ty of core, Vc, and up velocity of liquid ,VL and diameter ratio B (the ratio between core di-ameter, d , and central duct diameter, D). All of the results should be taken as guide and reference for the reverse circulation drilling by hydraulic action. |
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| Keywords: | conveyance of drilled - out reverse circulation drilling hydraulic parameters |
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