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<p>The complex underground environment leads to a complex vibration transmission mechanism and uneven distribution of vibration energy within the cementing casing string system. To reveal the vibration transmission characteristics of the cementing casing string system and evaluate the spatial distribution uniformity of vibration energy in the cementing casing string system, the present study firstly establishes a vibration transmission model of the cementing casing string system based on the transfer matrix method (TMM) and power flow method, and uses a semi-variance function model to establish an evaluation system for the spatial distribution of vibration energy in the cementing casing string system. Then, the correctness of the theoretical model for solving the system’s vibration characteristics is verified through modal hammer tests, and the accuracy of the theoretical model for solving the system’s dynamic response is verified through the existing research and finite element method (FEM). Finally, the effects of various parameters on the vibration transmission characteristics and the uniformity of vibration energy distribution within the system are analysed. The results indicate that: (1) Selecting the base of the system as the excitation point can yield greater excitation energy. (2) The higher the resonance frequency chosen as the excitation frequency, the more uniform the spatial distribution of the system’s vibration energy becomes. (3) Increasing the excitation amplitude can effectively enhance the vibration energy of the system without compromising the spatial distribution of that energy. (4) Utilizing low-viscosity cement slurry will facilitate the transmission of vibration energy within the system. (5) While ensuring the centralizing function of the centralizer, it is essential to consider both the mean value and spatial uniformity of kinetic energy of the system in conjunction with the excitation frequency. The present study has important theoretical guidance significance for the optimization and on-site application of vibration cementing equipment.</p>

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Research on the transmission characteristics and spatial distribution characteristics of vibration in the cementing casing string system

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Yiyong Yin,
  • Linshan Qi,
  • Liyan Wang,
  • Congfeng Qu,
  • Yongjin Yu,
  • Binhui Liu,
  • Xiujian Xia,
  • Shuofei Yang

摘要

The complex underground environment leads to a complex vibration transmission mechanism and uneven distribution of vibration energy within the cementing casing string system. To reveal the vibration transmission characteristics of the cementing casing string system and evaluate the spatial distribution uniformity of vibration energy in the cementing casing string system, the present study firstly establishes a vibration transmission model of the cementing casing string system based on the transfer matrix method (TMM) and power flow method, and uses a semi-variance function model to establish an evaluation system for the spatial distribution of vibration energy in the cementing casing string system. Then, the correctness of the theoretical model for solving the system’s vibration characteristics is verified through modal hammer tests, and the accuracy of the theoretical model for solving the system’s dynamic response is verified through the existing research and finite element method (FEM). Finally, the effects of various parameters on the vibration transmission characteristics and the uniformity of vibration energy distribution within the system are analysed. The results indicate that: (1) Selecting the base of the system as the excitation point can yield greater excitation energy. (2) The higher the resonance frequency chosen as the excitation frequency, the more uniform the spatial distribution of the system’s vibration energy becomes. (3) Increasing the excitation amplitude can effectively enhance the vibration energy of the system without compromising the spatial distribution of that energy. (4) Utilizing low-viscosity cement slurry will facilitate the transmission of vibration energy within the system. (5) While ensuring the centralizing function of the centralizer, it is essential to consider both the mean value and spatial uniformity of kinetic energy of the system in conjunction with the excitation frequency. The present study has important theoretical guidance significance for the optimization and on-site application of vibration cementing equipment.