The Mechanism Study of Vortex Tools Drainage Gas Recovery of Gas Well

WANG Chunsheng, WANG Xiaohu, DU Qiuying, FENG Bingkai, XU Chang

Abstract


The liquid loading of gas well is an important issue in deep exploitation of natural gas. The technic of vortex drainage has good prospects because the tool construction and construction work is simple, the technic is environmental and efficient. Currently, the mechanism for the vortex drainage and the theory of fluid motion are still missing. Therefore, in order to further understand the downhole flow field, verify drainage mechanism and select best working conditions, based on computational fluid dynamics and mixture model of multiphase flow through Fluent, the study established a three-dimensional structural model of vortex tools and the numerical simulation has been done. By monitoring the wellhead and the radial distribution of the liquid content and observing the state of the gas-liquid flow and the path line, the study analyzed the influence on gas well flow field by vortex tool. The study revealed the working mechanism of vortex tools to facilitate understanding the nature of the vortex drainage process, guide how to select the preferred process conditions and provide theoretical basis for the application and the dynamics simulation of vortex drainage technology.
Key words: The liquid loading of gas well; Vortex drainage; Multiphase flow; Numerical simulation

Keywords


The liquid loading of gas well; Vortex drainage; Multiphase flow; Numerical simulation

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References


[1] Jin, Z. C., Yang, C. D., Zhang, S. L., et al. (2004). Gas recovery engineering. Beijing: Petroleum Industry Press.

[2] Feng, C. J., Wang, C. S., & Zhang, H. (2013). Influencing factor analysis of the liquid discharge effect of downhole vortex tool in natural gas wells. Journal of Petroleum Machinery, (1), 78-81.

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DOI: http://dx.doi.org/10.3968/j.aped.1925543820140701.1931

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