摘要：Vortex tool is a new technique for the liquid unloading in gas wells. But it lacks a mathematical model to describe and predict the effect of vortex tools. In the present work, according to the axial, radial and circumferential momentum balance of the gas phase and liquid phase, the governing equations of vortex flow model have been established. Then thickness of liquid film and gas and liquid vortex flow intensity as well as the pressure drop gradient can be calculated. The calculation results and the previous experiments indicate that the pressure drop of the gas-liquid flow can be reduced by 5% similar to 25% with the vortex tool, and the vortex flow model has an average relative difference of 6.01%. The model results show that there are two mechanisms for reducing the pressure drop under the vortex flow condition. In addition, the research results show that vortex tools with bigger helical angle will lead to higher vortex flow intensity. The decay rate of vortex flow intensity decreases along the pipe as liquid velocity increases and the vortex flow working distance can be calculated by the vortex intensity gradient and initial vortex flow intensity.

ISSN号：1294-4475

卷、期、页：卷: 74

发表日期：2019-11-18

影响因子：0.000000

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,SCIE（科学引文索引网络版）

发表期刊名称：OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES

通讯作者：史殊哲,钟子尧

第一作者：吴晓东,韩国庆

论文类型：期刊论文

论文概要：史殊哲,吴晓东,韩国庆,钟子尧，Study on the gas-liquid annular vortex flow for liquid unloading of gas well，OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES，2019，卷: 74

论文题目：Study on the gas-liquid annular vortex flow for liquid unloading of gas well