Numerical analysis study on the application of three-lobed vortex tube in low-production wells

Gou, Ruyi; Kang, Chenchen; Luo, Xianglong

doi:10.1007/s12206-023-0523-5

Cited by 1 publication

(1 citation statement)

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“…Finally, the experimental results were compared with the numerical simulation results, and it was found that the error of the pressure drop is within 10%. Gou et al [3] carried out a numerical simulation of three internal swirling tools and analyzed the drainage recovery efficiency and the vortex characteristics of the swirling flow field downstream of the tools. By the energy efficiency analysis of the three structures, it was found that the three-leaf spiral tube is more suitable to apply during the initial stage of drainage, while the internal vortex tube is more conducive during the stable stage of drainage.…”

Section: Introductionmentioning

confidence: 99%

Study on Flow Characteristics of Venturi Accelerated Vortex Drainage Tool in Horizontal Gas Well

Zhang,

Xu,

Cai

et al. 2024

Applied Sciences

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Vortex drainage gas recovery has been used to carry liquid from gas wells. However, the traditional vortex tools in gas wells cannot produce long effective distance spiral flow at a low gas flow rate, and their operating mechanism has not been thoroughly analyzed. In this paper, the venturi acceleration vortex tool for a horizontal gas well is designed to improve drainage performance. The tube drainage, the vortex tool, and the venturi accelerated vortex tool were applied in a horizontal tube to investigate their drainage capacities by a horizontal well multiphase flow experimental device. The influence of different gas flow rates and liquid flow rates on the length of the spiral flow and pressure drop produced by the three tools was analyzed. The results show that the vortex tool can convert the gas–liquid mixing flow into the gas–liquid separation flow, that is, the liquid flows spirally along the wall and the gas flows in the center of the horizontal tube. Compared with the vortex tool, the venturi accelerated vortex tool can form a longer and more stable spiral flow. The laminar spiral flow reduces the total pressure drop in the tube. The length of the spiral flow increases with the increase in the gas flow rate. With the increase in the liquid flow rate, the spiral flow is not clear because of the turbulent flow. The length of the spiral flow and the pressure drop for the venturi accelerated vortex tool with different gas and liquid flow rates are analyzed to guide the application of the tool. This study provides a new means for the drainage of a horizontal gas well and further clarifies the working mechanism of the vortex drainage tool.

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Section: Introductionmentioning

confidence: 99%