Journal of Applied Science and Engineering

Published by Tamkang University Press


Impact Factor



Huang Weiming This email address is being protected from spambots. You need JavaScript enabled to view it.1,2,3, Wang Zunce1, Zhang Hongtao1,2,3, Ma Wenhai2,3, Zhang Jinglong1, Li Sen1, and Xu Yan1

1School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang Province, China
2Oil Production Engineering Research Institute of Daqing Oilfield Co., Ltd., Daqing 163712, Heilongjiang Province, China
3Heilongjiang Province Oil and Gas Reservoir Production Increasing Focus Laboratory, Daqing 163712, Heilongjiang Province, China


Received: February 7, 2021
Accepted: May 10, 2022
Publication Date: June 17, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||  


Aiming at the problems of eccentric wear and poor sealing performance of conventional gas well plungers in directional wells, a CFD-based optimized design has been adopted for the key structures of the rotary dynamic seal plunger, and a mathematical model of liquid discharge of rotary dynamic seal plunger has been established. The working mechanism of key structures like spiral groove and jet hole on the plunger has been clarified. The parameters of the spiral grooves have been optimized, with the spiral angle of 30°, the groove width of 6mm, and the groove number of 8; and the number of injection holes has been optimized at 12 through orthogonal experimental design. The results of laboratory verification experiments show that the optimized plunger structure successfully realizes the rotating liquid discharge, with the deviation between running and rotation speed of the plunger and the numerically simulated speed below 10%. Based on the indoor experimental research and field application, it can be concluded that the theoretical analysis method can accurately characterize the liquid drainage mechanism of the rotary dynamic seal plunger. The optimized rotary dynamic seal plunger is suitable for the gas well dewatering process of inclined wells with an inclination angle of less than 60o.

Keywords: directional well; numerical simulation; plunger; rotary dynamic seal; verification experiment


  1. [1] Q. H. HAN, (2016) “Design and application of a new type of self-buffering plunger gas lift drainage device suitable for horizontal gas wells—Taking Changqing gas area in Ordos Basin as an example" Natural Gas Industry 34(12): 34–35.
  2. [2] X. Y. LI, (2019) “Numerical simulation and optimal design of plunger gas lift device for directional well" Northeast Petroleum University 56(3): 48–49.
  3. [3] D. Foss and R. Gaul. “Plunger-life performance criteria with operating experience-ventura avenue field”. In: Drilling and Production Practice. OnePetro. 1965.
  4. [4] S. Gasbarri and M. L. Wiggins, (2001) “A dynamic plunger lift model for gas wells" SPE production & Facilities 16(02): 89–96.
  5. [5] Z. C.Wang and C. L. Liu, (2019) “Calculation and analysis of the sealing performance of the outer wall of the gas lift plunger" Earthquake Engineering and Engineering Dynamics 39(6): 7–16.
  6. [6] Y. H. Liu and Q. J. Huang, (2019) “Optimization simulation of rod plunger structure" Science & Technology Edition 41(06): 181–186.
  7. [7] N. Longfellow and D. Green. “Computational fluid dynamics for horizontal well plunger lift system design”. In: SPE Western North American and Rocky Mountain Joint Meeting. OnePetro. 2014.
  8. [8] O. Sayman, E. Pereyra, and C. Sarica. “Hydrodynamics of Continuous Flow Plunger Lift”. In: SPE Annual Technical Conference and Exhibition. OnePetro. 2020.
  9. [9] Y. P. Cao, “Simulation and Optimization of Plunger Gas Lift Drainage Gas Recovery in Highly Deviated Wells" Southwest Petroleum University: 2–6.
  10. [10] D. Jinxian, (2013) “Research and Application of Split Plunger Lifting Technology" Southwest Petroleum University: 18–20.
  11. [11] Z. Y. Chen Yaoqi, “Visualized Experimental Research on Split Plunger Gas Lift" West-China Exploration Engineering (4): 40–41.
  12. [12] D. J. Zhang Fengchao Hao Junlong, (2014) “Experimental simulation of split plunger gas lift" Science & Technology Information 31(1): 50–51.
  13. [13] S. S. Gao Tao Wang Gaowen, (2017) “Diagnosis of fluid accumulation and water body scale in block D of Xushen Gas Field" Daqing Petroleum Geology and Development 36(06): 86–90.
  14. [14] M. P. Zhang Hongtao Ma Wenhai, (2017) “Development of continuous drainage plunger for gas wells" Natural Gas Exploration and Development 42(1): 103–104.
  15. [15] J. Min, L. Jun, and L. Nan, (2015) “Progress and application of plunger gas lift drainage gas production technology" West China Prospecting Engineering (7): 25–26.
  16. [16] D. Yaowen, T. Mingwen, and Z. Xingfu, (2011) “Research on the application of plunger gas lift in directional wells in western Sichuan" Natural Gas Industry 31(6):53–55.
  17. [17] Z. Honglu, X. Ke, G. Yongmei, X. Qian, and H. Qian, (2020) “Adaptability analysis and Countermeasures of shale gas drainage and production technology" Reservoir evaluation and development (1): 96–101.
  18. [18] Z. Daoming, H. Shaohua, X. Wuju, and Z. Xiaojie, (2020) “Intelligent plunger gas lift technology in Daniudi gas field" Oil and gas well testing (3): 19–26.
  19. [19] H. Weiming, (2019) “Comprehensive diagnosis and risk early warning technology of gas well effusion" Zhongwai energy (3): 48–51.
  20. [20] G. X. Lou Leqin, (2016) “Multi model analysis of critical velocity of liquid carrying in gas wells" Fault block oil and gas field (4): 497–500.
  21. [21] L. Li, T. Wei, and L. Xuri, (2020) “CFD simulation of plunger lifting mechanism and optimization of process parameters" Petroleum machinery (3): 104–105.
  22. [22] L. Yan, J. Wang, J. Zhang, R. Cheng, H. Yang, and H. Yang. “Understanding and research on the drilling fluid technology for shale gas horizontal wells in south Sichuan, China”. In: International Petroleum Technology Conference. OnePetro. 2020.
  23. [23] Z. Nu,W. Yi, and Z. Bao, (2020) “Study and application of production prediction method for plunger drainage gas recovery measures" Drilling and production technology (5): 56–58.
  24. [24] K. P. Zhao, L. J. Mu, and W. Tian, (2020) “Study on transient gas-liquid sealing of plunger gas lift" Acta thermophysics Sinica (5): 1133–1138.
  25. [25] D. Zhiyong. Jet Mechanics, 1st ed. Chapter 6. Science Press, Bei Jing, 2005.