4/5/2025, 6:09:20 PM 星期六
一种同轴双向回转模式的钻具结构设计及振动模拟
CSTR:
作者:
作者单位:

成都理工大学环境与土木工程学院,四川 成都 610051

中图分类号:

P634.4

基金项目:

1、国土资源部深部地质钻探技术重点实验室2018年开放基金项目,深部钻探双向回转结构及机理研究,编号KF201809 2、岩土钻掘与防护教育部工程研究中心开放基金,钻头同轴双旋结构对钻柱的振动影响分析,编号RSDEP201904


Structural design and vibration simulation of a coaxial contra-rotary drilling tool
Author:
Affiliation:

College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu Sichuan 610051, China

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    摘要:

    钻进时的振动会引起钻具疲劳失效和损坏,为提高井下钻具的稳定性,本文设计了依靠行星齿轮系驱动内外钻头同轴双向回转的钻具结构。通过对其核心的齿轮、密封、轴承等部件进行的强度校核,证明该结构的设计强度能够满足正常的使用工况。同时基于数值模拟对该结构的振动效果进行了验证,将钻进时钻头与岩石的相互作用简化为简谐荷载,对双向回转钻具整体结构进行谐响应分析。结果显示,相比于普通单向回转钻进结构,同等条件下双向回转的钻具结构能够有效抑制扭转振动。

    Abstract:

    Vibration during drilling can cause fatigue failure and damage to the drilling tool. In order to improve the stability of downhole drilling tool, the author designed a drilling tool structure that relies on the planetary gear system to drive contra rotation of two coaxial bits. The strength verification of its core parts such as gears, seals, bearings, proved that the design strength of the structure can meet the normal working conditions. The vibration effect of the structure has been verified by numerical simulation, where the interaction between the drill bit and rock was simplified as harmonic load to perform harmonic response analysis to solve the vibration of the structure. Compared with the conventional drill structure, the result shows the coaxial contra-rotary drilling tool structure can effectively suppress twisting vibration under the same condition.

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曹彦伟,李谦.一种同轴双向回转模式的钻具结构设计及振动模拟[J].钻探工程,2021,48(11):84-93.
CAO Yanwei, LI Qian. Structural design and vibration simulation of a coaxial contra-rotary drilling tool[J]. Drilling Engineering, 2021,48(11):84-93.

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  • 收稿日期:2021-03-09
  • 最后修改日期:2021-07-29
  • 录用日期:2021-08-20
  • 在线发布日期: 2021-12-06
  • 出版日期: 2021-11-10
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