| 冰钻电动机械钻具孔内升降运动特性试验研究 |
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| 引用本文： | 宋佳宇,徐会文,张楠,韩丽丽.冰钻电动机械钻具孔内升降运动特性试验研究[J].探矿工程,2017,44(10):66-69. |
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| 作者姓名： | 宋佳宇 徐会文 张楠 韩丽丽 |
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| 作者单位： | 吉林省水利水电勘测设计研究院,吉林大学建设工程学院,吉林大学建设工程学院,中国地质科学院勘探技术研究所 |
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| 基金项目： | 国家自然科学基金青年科学基金项目“基于介电剖面法的极地冰芯电学性质测量机理与技术优化研究”（编号：41406210）；国家海洋局极地科学重点实验室开放研究基金项目“极地冰芯介电特性测量机理研究”（编号：KP201404） |
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| 摘 要： | 根据冰层钻进特点，从钻孔水力学角度出发，分析测试了钻具的质量、长度与钻井液的粘度、密度等因素对钻具下降速度特性的影响规律。通过对4种长度、不同质量的钻具在2种酯类钻井液中下落过程的测试，得出了钻具的下落速度与钻具的长度呈反比，与钻具的质量呈正比，且钻具的下落速度随钻井液的粘度和密度的增大而减小。钻具下落的加速运动时间主要与钻井液的粘度、密度及钻井液在钻具表面流动时的剪切速率有关。
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| 关 键 词： | 南极冰层钻进 钻井液 钻具升降速度 加速时间 |
| 收稿时间： | 2017/6/27 0:00:00 |
| 修稿时间： | 2017/6/27 0:00:00 |
Experimental Research on Lifting and Lowering Motion Characteristics of Electric Mechanical Drill for Ice Drilling in the Hole |
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| SONG Jia-yu,XU Hui-wen,ZHANG Nan and HAN Li-li.Experimental Research on Lifting and Lowering Motion Characteristics of Electric Mechanical Drill for Ice Drilling in the Hole[J].Exploration Engineering(Drilling & Tunneling),2017,44(10):66-69. |
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| Authors: | SONG Jia-yu XU Hui-wen ZHANG Nan and HAN Li-li |
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| Institution: | Jilin Water Conservancy and Hydropower Investigation Design and Research Institute,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,The Institute of Exploration Techniques, CAGS |
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| Abstract: | According to the characteristics of ice layer drilling, from the point of view of drilling hydraulics, the effect of quality and length of drilling tool, the viscosity and density of drilling fluid and some other factors on the characteristics of drilling tool lowering speed are analyzed and tested. Through the tests on the lowering process of drilling tools, with 4 different lengths and different qualities, in 2 kinds of esters drilling fluid, it is concluded that the lowering speed of the drilling tools is inversely proportional to the length of the drilling tool, and is proportional to the quality of the drilling tool, and the lowering speed of the drilling tool decreased with the increase of the viscosity and density of the drilling fluid. The acceleration time of the drilling tool lowering is mainly related to the viscosity and density of the drilling fluid, as well as the shear rate of drilling fluid while flowing on the surface of the drilling tool. |
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| Keywords: | Antarctic ice drilling drilling fluid lifting and lowering speed of drilling tool acceleration time |
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