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Analysis of Maximum Liquid Carrying Capacity Based on Conventional Tubing Plunger Gas Lift

Yanqun Yu1,*, Wenhao Xu1, Yahui Huangfu1, Jinhai Liu1,2, Bensheng Wang1, Kai Liu1

1 College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao, 266580, China
2 Energy Technology & Services Oil Production Services Company, CNOOC, Tianjin, 300450, China

* Corresponding Author: Yanqun Yu. Email: email

(This article belongs to the Special Issue: Hydraulic Fracturing Theory and Application for Geo-energy Development)

Energy Engineering 2024, 121(6), 1521-1533. https://doi.org/10.32604/ee.2024.047986

Abstract

China’s unconventional gas fields have a large number of low-productivity and low-efficiency wells, many of which are located in remote and environmentally harsh mountainous areas. To address the long-term stable production of these gas wells, plunger-lift technology plays an important role. In order to fully understand and accurately grasp the drainage and gas production mechanisms of plunger-lift, a mechanical model of plunger-liquid column uplift in the plunger-lift process was established, focusing on conventional plunger-lift systems and representative wellbore configurations in the Linxing region. The operating casing pressure of the plunger-lift process and the calculation method for the maximum daily fluid production rate based on the work regime with the highest fluid recovery rate were determined. For the first time, the critical flow rate method was proposed as a constraint for the maximum liquid-carrying capacity of the plunger-lift, and liquid-carrying capacity charts for conventional plunger-lift with different casing sizes were developed. The results showed that for 2 casing plunger-lift, with a well depth of shallower than 808 m, the maximum drainage rate was 33 m/d; for 2 casing plunger-lift, with a well depth of shallower than 742 m, the maximum drainage rate was 50.15 m/d; for 3 casing plunger-lift, with a well depth of shallower than 560 m, the maximum drainage rate was 75.14 m/d. This research provides a foundation for the scientific selection of plunger-lift technology and serves as a decision-making reference for developing reasonable plunger-lift work regimes.

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APA Style
Yu, Y., Xu, W., Huangfu, Y., Liu, J., Wang, B. et al. (2024). Analysis of maximum liquid carrying capacity based on conventional tubing plunger gas lift. Energy Engineering, 121(6), 1521-1533. https://doi.org/10.32604/ee.2024.047986
Vancouver Style
Yu Y, Xu W, Huangfu Y, Liu J, Wang B, Liu K. Analysis of maximum liquid carrying capacity based on conventional tubing plunger gas lift. Energ Eng. 2024;121(6):1521-1533 https://doi.org/10.32604/ee.2024.047986
IEEE Style
Y. Yu, W. Xu, Y. Huangfu, J. Liu, B. Wang, and K. Liu "Analysis of Maximum Liquid Carrying Capacity Based on Conventional Tubing Plunger Gas Lift," Energ. Eng., vol. 121, no. 6, pp. 1521-1533. 2024. https://doi.org/10.32604/ee.2024.047986



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