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Modeling and Experimental Study on Motion States of Laboratory-Scale Bottom Hole Assembly in Horizontal Wells

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  • Wei Li

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China)

  • Genlu Huang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China)

  • Hongjian Ni

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China)

  • Fan Yu

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China)

  • Wu Jiang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China)

Abstract

Motion states of bottom hole assembly (BHA) have a great effect on the trajectory control and drilling efficiency while rotary drilling. In order to study the motion states of BHA in horizontal wells, a BHA dynamic model with the finite element method was established. Meanwhile, an indoor experimental setup based on similarity criterion was designed and built to verify the numerical simulation results. Finally, the effects of measuring positions, rotate speeds, weight on bit (WOB), and friction coefficients on the motion states were analyzed in numerical simulation and experiment. The results show that the experimental results can match well with the numerical simulation results. The motion states of BHA in horizontal wells can be divided into three kinds, including circular arc swing, "8" shape swing, and dot-like circular motion. The circular arc swing mainly appears at middle section of BHA and occurs through the collective result of gravity and tangential friction. The dot-like circular motion mainly appears at near-bit or near-stabilizer area because drill bit and stabilizer can steady the BHA at the center part of the wellbore. The "8" shape swing mainly appears at the crossed area and occurs through collective disturbance of the other two motions. Moreover, rotate speed and friction coefficient have promotions on the lateral vibration while WOB have a much smaller effect. Through analyses, related suggestions are given for the drilling engineering. The related conclusions and suggestions in this paper can help to further understand the lateral dynamic characteristics of BHA in horizontal wells and select suitable parameters for drilling engineering.

Suggested Citation

  • Wei Li & Genlu Huang & Hongjian Ni & Fan Yu & Wu Jiang, 2020. "Modeling and Experimental Study on Motion States of Laboratory-Scale Bottom Hole Assembly in Horizontal Wells," Energies, MDPI, vol. 13(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:4:p:925-:d:322516
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    References listed on IDEAS

    as
    1. Guangjian Dong & Ping Chen, 2018. "3D Numerical Simulation and Experiment Validation of Dynamic Damage Characteristics of Anisotropic Shale for Percussive-Rotary Drilling with a Full-Scale PDC Bit," Energies, MDPI, vol. 11(6), pages 1-23, May.
    2. Yingjie Chen & Jianhong Fu & Tianshou Ma & Anping Tong & Zhaoxue Guo & Xudong Wang, 2018. "Numerical Modeling of Dynamic Behavior and Steering Ability of a Bottom Hole Assembly with a Bent-Housing Positive Displacement Motor Under Rotary Drilling Conditions," Energies, MDPI, vol. 11(10), pages 1-23, September.
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