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Multiphase throttling characteristic analysis and structure optimization design of throttling valve in managed pressure drilling

Author

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  • Zhang, Zhi
  • Sun, Baojiang
  • Wang, Zhiyuan
  • Mu, Xiaojie
  • Sun, Dalin

Abstract

As the key equipment to achieve accurate control of wellhead pressure during managed pressure drilling, the throttle valve can ensure the bottom hole pressure accurately controllable during the migration of invading gas in the annulus. At present, most of the research focuses on the throttling characteristics of single-phase fluid, and the research on the pressure regulation characteristics of throttle valve under the condition of multiphase flow is still relatively weak. In this paper, the mathematical model and CFD model of multiphase flow in the throttle valve are established, and the multiphase throttling characteristics under different hydraulic parameters are studied. The rationality of the proposed model is verified by field full-scale experiments. The results show that throttling pressure drop shows a nonlinear trend with the opening, which is not conducive to field application. Furthermore, through the sensitivity analysis of the throttle characteristic curve under multiphase flow conditions, the geometric structure of the throttle valve core is optimized to realize the fine adjustment of the wellhead back pressure under multiphase flow conditions, which is of guiding significance for wellbore pressure control under gas invasion condition.

Suggested Citation

  • Zhang, Zhi & Sun, Baojiang & Wang, Zhiyuan & Mu, Xiaojie & Sun, Dalin, 2023. "Multiphase throttling characteristic analysis and structure optimization design of throttling valve in managed pressure drilling," Energy, Elsevier, vol. 262(PB).
    • Handle: RePEc:eee:energy:v:262:y:2023:i:pb:s0360544222025051
    DOI: 10.1016/j.energy.2022.125619
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    References listed on IDEAS

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    1. Wang, Zhu & Liu, Ming & Yan, Hui & Yan, Junjie, 2022. "Optimization on coordinate control strategy assisted by high-pressure extraction steam throttling to achieve flexible and efficient operation of thermal power plants," Energy, Elsevier, vol. 244(PA).
    2. Chen, Fu-qiang & Jin, Zhi-jiang, 2021. "Throttling components effect on aerodynamic performance of superheated steam flow in multi-stage high pressure reducing valve," Energy, Elsevier, vol. 230(C).
    3. Zhang, Zheng & Xiong, Youming & Gao, Yun & Liu, Liming & Wang, Menghao & Peng, Geng, 2018. "Wellbore temperature distribution during circulation stage when well-kick occurs in a continuous formation from the bottom-hole," Energy, Elsevier, vol. 164(C), pages 964-977.
    4. Xiao, Caiyun & Ni, Hongjian & Shi, Xian, 2022. "Unsteady model for wellbore pressure transmission of carbon dioxide fracturing considering limited-flow outlet," Energy, Elsevier, vol. 239(PE).
    5. Zhang, Xinbiao & Xie, Yudong & Han, Jiazhen & Wang, Yong, 2022. "Design of control valve with low energy consumption based on Isight platform," Energy, Elsevier, vol. 239(PD).
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    Cited by:

    1. Meng Li & Siyu Zheng & Mingshan Wei, 2023. "Flow Loss Analysis and Structural Optimization of Multiway Valves for Integrated Thermal Management Systems in Electric Vehicles," Energies, MDPI, vol. 16(13), pages 1-22, June.

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