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The Rule of Carrying Cuttings in Horizontal Well Drilling of Marine Natural Gas Hydrate

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  • Na Wei

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

  • Yang Liu

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

  • Zhenjun Cui

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

  • Lin Jiang

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

  • Wantong Sun

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

  • Hanming Xu

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

  • Xiaoran Wang

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

  • Tong Qiu

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

Abstract

Horizontal well drilling is a highly effective way to develop marine gas hydrate. During the drilling of horizontal wells in the marine gas hydrate layer, hydrate particles and cutting particles will migrate with the drilling fluid in the horizontal annulus. The gravity of cuttings is easy to deposit in the horizontal section, leading to the accumulation of cuttings. Then, a cuttings bed will be formed, which is not beneficial to bring up cuttings and results in the decrease of wellbore purification ability. Then the extended capability of the horizontal well will be restricted and the friction torque of the drilling tool will increase, which may cause blockage of the wellbore in severe cases. Therefore, this paper establishes geometric models of different hole enlargement ways: right-angle expansion, 45-degree angle expansion, and arc expanding. The critical velocity of carrying rock plates are obtained by EDEM and FLUENT coupling simulation in different hydrate abundance, different hydrate-cuttings particle sizes and different drilling fluid density. Then, the effects of hole enlargement way, particle size, hydrate abundance and drilling fluid density on rock carrying capacity are analyzed by utilizing an orthogonal test method. Simulation results show that: the critical flow velocity required for carrying cuttings increases with the increase of the particle size of the hydrate-cuttings particle when the hydrate abundance is constant. The critical flow velocity decreases with the increase of drilling fluid density, the critical flow velocity carrying cuttings decreases with the increase of hydrate abundance when the density of the drilling fluid is constant. Orthogonal test method was used to evaluate the influence of various factors on rock carrying capacity: hydrate-cuttings particle size > hole enlargement way > hydrate abundance > drilling fluid density. This study provides an early technical support for the construction parameter optimization and well safety control of horizontal well exploitation models in a marine natural gas hydrate reservoir.

Suggested Citation

  • Na Wei & Yang Liu & Zhenjun Cui & Lin Jiang & Wantong Sun & Hanming Xu & Xiaoran Wang & Tong Qiu, 2020. "The Rule of Carrying Cuttings in Horizontal Well Drilling of Marine Natural Gas Hydrate," Energies, MDPI, vol. 13(5), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1129-:d:327642
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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. Jing-Chun Feng & Xiao-Sen Li & Gang Li & Bo Li & Zhao-Yang Chen & Yi Wang, 2014. "Numerical Investigation of Hydrate Dissociation Performance in the South China Sea with Different Horizontal Well Configurations," Energies, MDPI, vol. 7(8), pages 1-22, July.
    3. Michael T. Kezirian & S. Leigh Phoenix, 2017. "Natural Gas Hydrate as a Storage Mechanism for Safe, Sustainable and Economical Production from Offshore Petroleum Reserves," Energies, MDPI, vol. 10(6), pages 1-8, June.
    4. Bei Liu & Qing Yuan & Ke-Hua Su & Xin Yang & Ben-Cheng Wu & Chang-Yu Sun & Guang-Jin Chen, 2012. "Experimental Simulation of the Exploitation of Natural Gas Hydrate," Energies, MDPI, vol. 5(2), pages 1-28, February.
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    Cited by:

    1. Tianyi Tan & Hui Zhang, 2021. "Study on the Mechanical Extended-Reach Limit Prediction Model of Horizontal Drilling with Dual-Channel Drillpipes," Energies, MDPI, vol. 14(22), pages 1-16, November.
    2. Lipei Ding & Yuning Sun & Zhiming Wang & Weibin Song & Yonglong Wang, 2022. "Parameter Optimization of Drilling Cuttings Entering into Sieve Holes on a Surface Multi-Hole (SMH) Drill Pipe," Energies, MDPI, vol. 15(10), pages 1-17, May.

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