Vibration stability analysis and structural optimization of mountain geophysical electric drilling rigs
MA Yachao
ZHAO Haiquan
YANG Xuejun
HUANG Zhiqiang
Abstract：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/s² respectively.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.
Keywords：Mountain geophysical electric drilling rigVibrationModal analysisHarmonic response analysisStructural optimization
Publication Date：2025-11-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 89-97 )