冰层热融钻具倾斜原因及防/纠斜方法浅析
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中国地质大学(北京)工程技术学院,北京100083

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P634.7

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国家自然科学基金项目“南极冰下湖科学钻探选址及冰下过程研究”(编号:41941005);国家重点研发计划项目“南极冰下复杂地质环境多工艺钻探理论与方法”课题四“多工艺极地钻探装备研发与系统集成”(编号:2021YFA0719104);中央高校科研基本业务费项目“可回收式热融钻具孔内融水与周围冰层传热机理研究”(编号:2-9-2021-017)


A brief analysis of inclination causes and preventing/correcting methods for ice hot-point drills
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School of Engineering and Technology, China University of Geosciences, Beijing 100083, China

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    摘要:

    在冰层钻进时,热融钻具往往会发生倾斜,导致其偏离目标冰层,无法完成既定钻探任务,因此必须对热融钻具的倾斜进行预防和纠正。为此,本文首先分析了热融钻具发生倾斜的原因,并将其归纳为热融钻头底部冰层受热不均、热融钻具结构稳定性差、放缆速度高于钻进速度、钻孔直径过大等;然后,从热力法、重力法、浮力法、推靠法、扶正器法、导向杆嫁接法、钻孔直径减小法等方面归纳总结了热融钻具的防/纠斜方法,从而为进一步开展热融钻具防/纠斜研究奠定了基础。

    Abstract:

    The hot-point drillis often tend to tilt in ice drilling, which results in deviation from the target ice and failure to complete the scheduled drilling mission. To this end, the causes for the inclination of hot-point drills are anaylized and categorized into uneven heating of the ice at the bottom of the thermal head, poor stability of the hot-point drill structure, higher speed of cable unwinding than penetration speed and oversized borehole diameter. The methods of preventing and correcting the inclination in hot-point drilling are summarized, including the thermal method, the gravity method, the buoyancy method, the push method, the centralizer method, the guide rod method and the borehole diameter reduction method, so as to lay a foundation for further research on preventing and correcting the inclination of hot-point drills.

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引用本文

李亚洲,孙友宏,冶宇霆,等.冰层热融钻具倾斜原因及防/纠斜方法浅析[J].钻探工程,2023,50(3):8-20.
LI Yazhou, SUN Youhong, YE Yuting, et al. A brief analysis of inclination causes and preventing/correcting methods for ice hot-point drills[J]. Drilling Engineering, 2023,50(3):8-20.

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历史
  • 收稿日期:2022-09-29
  • 最后修改日期:2023-03-06
  • 录用日期:2023-03-07
  • 在线发布日期: 2023-06-01
  • 出版日期: 2023-05-10