摘要
油气资源勘探逐渐由汽油或柴油驱动向电力驱动发展,但传统的山地物探电动钻机在工作时振动大,严重影响了电动钻机工作稳定性。基于此,以山地物探电动钻机为研究对象,采用有限元仿真分析与试验相结合的方法,开展了电动钻机振动稳定性分析及结构优化。仿真结果表明,优化前电动钻机的第7、8、9阶固有频率均处于共振范围内,最大振动位移处于桅杆上,且沿X轴方向最大位移为5.9 mm,严重影响钻机的稳定性。对钻机的减速器类型、底座结构和拉杆位置进行优化后,钻机的最大固有频率较优化前降低22.6%,均避开了共振范围,且X轴方向最大振动位移为2.9 mm,较钻机优化前降低50.8%。现场试验表明,工作稳定后钻机的转矩在670 N·m上下小幅度波动,桅杆在X、Y、Z方向振动加速度分别在±0.37、±0.25、±0.04 m/s2范围内波动,钻机正常工作时不发生共振。研究工作解决了山地物探电动钻机工作时的共振问题,可为绿色高效的油气勘探装备的研发提供参考。
The exploration of oil and gas resources is gradually shifting from gasoline or diesel-driven to electric-driven.However,traditional mountain geophysical electric drilling rigs generate significant vibration during operation,which seriously affects their working stability.Based on this,mountain geophysical electric drilling rigs were taken as the research object,and a combination of finite element simulation analysis and experiments was adopted to conduct vibration stability analysis and structural optimization of the electric drilling rigs.The simulation results show that the 7th,8th,and 9th order natural frequencies of the electric drilling rig before optimization all fall within the resonance range,and the maximum vibration displacement occurs on the mast with a maximum displacement of 5.9 mm along the X-axis,which seriously affects the stability of the drilling rig.After optimizing the reducer type,base structure,and tie rod position of the drilling rig,the maximum natural frequency of the rig is reduced by 22.6%compared with that before optimization,all lying outside the resonance range;meanwhile,the maximum vibration displacement along the X-axis is 2.9 mm,The maximum vibration displacement along the X-axis is 2.9 mm,which is a 50.8%decrease compared with that of the drilling rig before optimization.The field tests show that after the drilling rig operates stably,its torque fluctuates slightly around 670 N·m,and the vibration accelerations of the mast in the X,Y,and Z directions stably fluctuate within the ranges of±0.37,±0.25 and±0.04 m/s²respectively.No resonance occurs when the drilling rig works normally.This study solves the resonance problem of mountain geophysical electric drilling rigs during operation and can provide a reference for the research and development of green and efficient oil and gas exploration equipment.
作者
马亚超
赵海全
杨学军
黄志强
MA Yachao;ZHAO Haiquan;YANG Xuejun;HUANG Zhiqiang(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500,China;Key Laboratory for Oil and Gas Equipment,Ministry of Education,Southwest Petroleum University,Chengdu 610500,China)
出处
《机械强度》
北大核心
2025年第11期89-97,共9页
Journal of Mechanical Strength
基金
国家自然科学基金项目(51904263)。
关键词
山地物探电动钻机
振动
模态分析
谐响应分析
结构优化
Mountain geophysical electric drilling rig
Vibration
Modal analysis
Harmonic response analysis
Structural optimization
