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Temperature Prediction for High Pressure High Temperature Condensate Gas Flow Through Chokes

Author

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  • Changjun Li

    (School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China
    CNPC Key Laboratory of Oil & Gas Storage and Transportation, Southwest Petroleum University, Chengdu 610500, China)

  • Wenlong Jia

    (School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China)

  • Xia Wu

    (School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China)

Abstract

This study developed a theoretical model for predicting the downstream temperatures of high pressure high temperature condensate gas flowing through chokes. The model is composed of three parts: the iso-enthalpy choke model derived from continuity equation and energy conservation equation; the liquid-vapor equilibrium model based on the SRK equation of state (EoS); and the enthalpy model based on the Lee-Kesler EoS. Pseudocritical properties of mixtures, which are obtained by mixing rules, are very important in the enthalpy model, so the Lee-Kesler, Plocker-Knapp, Wong-Sandler and Prausnitz-Gunn mixing rules were all researched, and the combination mixing rules with satisfactory accuracy for high pressure high temperature condensate gases were proposed. The temperature prediction model is valid for both the critical and subcritical flows through different kinds of choke valves. The applications show the model is reliable for predicting the downstream temperatures of condensate gases with upstream pressures up to 85.54 MPa and temperatures up to 93.23 °C. The average absolute errors between the measured and calculated temperatures are expected for less than 2 °C by using the model.

Suggested Citation

  • Changjun Li & Wenlong Jia & Xia Wu, 2012. "Temperature Prediction for High Pressure High Temperature Condensate Gas Flow Through Chokes," Energies, MDPI, vol. 5(3), pages 1-13, March.
  • Handle: RePEc:gam:jeners:v:5:y:2012:i:3:p:670-682:d:16584
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    Citations

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    Cited by:

    1. Xia Wu & Changjun Li & Yufa He & Wenlong Jia, 2017. "Dynamic Modeling of the Two-Phase Leakage Process of Natural Gas Liquid Storage Tanks," Energies, MDPI, vol. 10(9), pages 1-26, September.
    2. Wu, Shiguang & Zhao, Bangjian & Tan, Jun & Zhao, Yongjiang & Zhai, Yujia & Xue, Renjun & Tan, Han & Ma, Dong & Wu, Dirui & Dang, Haizheng, 2023. "Thermodynamic study on throttling process of Joule-Thomson cooler to improve helium liquefaction performance between 2 K and 4 K," Energy, Elsevier, vol. 277(C).
    3. Li, Zhuoran & Zhang, Caigong & Li, Changjun & Jia, Wenlong, 2022. "Thermodynamic study on the natural gas condensation in the throttle valve for the efficiency of the natural gas transport system," Applied Energy, Elsevier, vol. 322(C).
    4. Alexey Dengaev & Vladimir Verbitsky & Olga Eremenko & Anna Novikova & Andrey Getalov & Boris Sargin, 2022. "Water-in-Oil Emulsions Separation Using a Controlled Multi-Frequency Acoustic Field at an Operating Facility," Energies, MDPI, vol. 15(17), pages 1-16, August.
    5. Zhaoqian Luo & Qilin Liu & Fan Yang & Ziyuan Li & Huanhuan Wang & Bo Wang & Zhouyu Peng & Wenlong Jia, 2022. "Research and Application of Surface Throttling Technology for Ultra-High-Pressure Sour Natural Gas Wells in Northwestern Sichuan Basin," Energies, MDPI, vol. 15(22), pages 1-14, November.

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