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A Hydraulic Model for Multiphase Flow Based on the Drift Flux Model in Managed Pressure Drilling

Author

Listed:
  • Qiang Fang

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Yingfeng Meng

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Na Wei

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Chaoyang Xu

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Gao Li

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

Abstract

Managed pressure drilling (MPD) is a drilling technique used to address the narrow density window under complex geological environments. It has widespread applications in the exploration and exploitation of oil and gas, both onshore and offshore. In this study, to achieve effective control of the downhole pressure to ensure safety, a gas–liquid two-phase flow model based on the drift flux model is developed to describe the characteristics of transient multiphase flow in the wellbore. The advection upwind splitting method (AUSM) numerical scheme is used to assist with calculation and analysis, and the monotonic upwind scheme for conservation laws (MUSCLs) technique with second-order precision is adopted in combination with the Van Leer slope limiter to improve precision. Relevant data sourced from prior literature are used to validate the suggested model, the results of which reveal an excellent statistical consistency. Further, the influences of various parameters in a field application, including backpressure, density, and mass flow, are analyzed. Over the course of later-stage drilling, a combination of wellhead backpressure and displacement is recommended to exercise control.

Suggested Citation

  • Qiang Fang & Yingfeng Meng & Na Wei & Chaoyang Xu & Gao Li, 2019. "A Hydraulic Model for Multiphase Flow Based on the Drift Flux Model in Managed Pressure Drilling," Energies, MDPI, vol. 12(20), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:20:p:3930-:d:277278
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    References listed on IDEAS

    as
    1. Wei, Na & Xu, Chaoyang & Meng, Yingfeng & Li, Gao & Ma, Xiao & Liu, Anqi, 2018. "Numerical simulation of gas-liquid two-phase flow in wellbore based on drift flux model," Applied Mathematics and Computation, Elsevier, vol. 338(C), pages 175-191.
    2. Yi Feng & Gao Li & Yingfeng Meng & Boyun Guo, 2018. "A Novel Approach to Investigating Transport of Lost Circulation Materials in Rough Fracture," Energies, MDPI, vol. 11(10), pages 1-19, September.
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