| Geological Publishing House, Institute of Exploration Technology, Chinese Academy of Geological Sciences | Host |
| Citation: |
CHEN Yun-wang, CAO Pin-lu, LONG Xiang, CHEN Bao-yi, YANG Cheng. Design and Test on Experimental Table of Stimulated Rotary Drilling for Ice Coring[J]. DRILLING ENGINEERING, 2016, (5): 31-36. doi: 10.3969/j.issn.1672-7428.2016.05.007
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Design and Test on Experimental Table of Stimulated Rotary Drilling for Ice Coring
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Abstract
Polar drilling practice reveals the complicated geological conditions near the bottom of ice sheet and the ice-rock interface;warm ice, basal melt water and even the debris-rich ice with unequal thickness may exist, these conditions make coring drilling extremely difficult.The optimization of bit types and the determination of reasonable drilling parameters be-come important factors to ensure safe and rapid drilling.In this paper, an experimental table is introduced, which can stim-ulate rotary drilling in ice with adjustable bit pressure and rotation speed of 0~10kN and 0~300r/min respectively and the maximum torque about 100N· m.By this experimental table, the temperature of bit, borehole depth, drilling speed and some other parameters can be measured to provide means for further research on the influence of bit type and structure pa-rameters on torque and cutting temperature.Ice drilling experiment was carried out with PDC bit;the results show that the experimental requirements can be met by this table with accurately adjusted drilling pressure and speed.-
Keywords:
- polar drilling /
- ice core drilling /
- ice drilling /
- debris-rich ice /
- cutting heat /
- experimental device
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CHEN Yun-wang, CAO Pin-lu, LONG Xiang, CHEN Bao-yi, YANG Cheng. Design and Test on Experimental Table of Stimulated Rotary Drilling for Ice Coring[J]. DRILLING ENGINEERING, 2016, (5): 31-36. doi: 10.3969/j.issn.1672-7428.2016.05.007
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