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Study on Vibration Energy Conversion Efficiency of the Drill String Absorption & Hydraulic Supercharging Device

  • INNOVATIVE TECHNOLOGIES OF OIL AND GAS
  • Published:
Chemistry and Technology of Fuels and Oils Aims and scope

The vibration of a drill string can cause multiple hazards in the process of drilling operations. The conversion of excessive vibration energy of the drill string into the rock breaking energy can provide the dual effect of reducing the risks and improving the rock breaking efficiency of drilling. To address the task, a drill string absorption & hydraulic supercharging device has been developed. However, the design and exploitation of the drill string absorption & hydraulic supercharging device needs a comprehensive understanding of the characteristics of conversion of the drill string’s vibration energy. Based on the drill string dynamics experimental device, a simulation test platform has been developed to evaluate the efficiency of conversion of the vibration energy. The analysis of the test results is used to evaluate the conversion characteristics of the vibration energy of the bottom hole drill string. The results show that the energy conversion efficiency depends on the elastic stiffness and installation position of the drill string absorption & hydraulic supercharging device, the overall rotational speed, and the WOB (weight on bit) of the conversion device. With increase in the elastic stiffness, the conversion efficiency of the vibration energy first increases and then decreases. The closer the installation position of the drill string absorption & hydraulic supercharging device is to the bit, the better the conversion efficiency. With increase in the rotational speed, the conversion efficiency of the vibration energy increases. With increase in the WOB, the conversion efficiency of the vibration energy first increases and then decreases. The research results provide the background for the development and application of speed raising tools based on conversion of the drill string vibration.

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Acknowledgments

The study was funded by the National Major Science and Technology Project (2016ZX05022-002) and the Special Fund Project of the Central Universities Fundamental Research Fund (19CX02065A).

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Authors and Affiliations

  1. School of Petroleum Engineering in China University of Petroleum, Qingdao, China

    Liu Yongwang, Guanan Zhichuan & Liang Deyang

  2. Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, China

    Liu Yongwang, Guanan Zhichuan & Liang Deyang

  3. Shandong Ultro-deep Drilling Process Control Tech R&D Center, Qingdao, China

    Liu Yongwang, Guanan Zhichuan & Liang Deyang

  4. SINOPEC Research Institute of Petroleum Engineering, Beijing, China

    Zhang Hongning, Lu Baoping & Ma Guangjun

Authors
  1. Liu Yongwang
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  2. Guanan Zhichuan
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  3. Zhang Hongning
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  4. Lu Baoping
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  5. Ma Guangjun
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  6. Liang Deyang
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Corresponding author

Correspondence to Liu Yongwang.

Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 57–60 March– April, 2022.

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Yongwang, L., Zhichuan, G., Hongning, Z. et al. Study on Vibration Energy Conversion Efficiency of the Drill String Absorption & Hydraulic Supercharging Device. Chem Technol Fuels Oils 58, 340–348 (2022). https://doi.org/10.1007/s10553-022-01390-8

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  • DOI: https://doi.org/10.1007/s10553-022-01390-8

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