摘要：The aggregation of coal fines particles at the bottom of the coal-bed methane well is a common occurrence during production, which could inhibit the flow in the bottom of wells and have adverse effect on the downhole equipment. In this work, gas-liquid-solid three-phase flow experiments were carried out to investigate the migration and discharge of coal fines particles in undulating pipeline. The experiments were conducted in downbent V-shaped pipes with different inclination angles. Based on the conductivity method, the real-time liquid holdup at three positions of the elbow was measured by the developed software. The slugs were identified on the time series curves of liquid holdup, and the characteristics of each slug were calculated, such as length and translational velocity. Meanwhile, the moving of particles with different size and concentration can be observed through visualized flow channel. The dyed coal fines particles are injected into the multiphase flow loop. By observing whether they can be discharged from the V-shaped pipe, the lower limits of superficial gas and liquid velocities to avoid particle retention at the elbow were determined. A correlation to predict the critical gas and liquid velocity was presented, and the accuracy of the calculation model was verified in comparison with the experimental results.

关键字：slug flow coal fines liquid holdup critical velocity undulating pipeline

ISSN号：0354-9836

卷、期、页：卷: 23 期: 2 页: 683-694 子辑: A

发表日期：2019-01-01

影响因子：0.000000

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）

发表期刊名称：THERMAL SCIENCE

参与作者：李辰

通讯作者：王烁龙,钟子尧,任泽彬,孟展,王晗路

第一作者：吴晓东,韩国庆

论文类型：期刊论文

论文概要：王烁龙,吴晓东,韩国庆,钟子尧,任泽彬,孟展,王晗路,李辰，EXPERIMENTAL STUDY ON GAS-LIQUID-COAL FINES THREE-PHASE FLOW IN UNDULATING PIPELINE，THERMAL SCIENCE，2019，卷: 23 期: 2 页: 683-694 子辑: A

论文题目：EXPERIMENTAL STUDY ON GAS-LIQUID-COAL FINES THREE-PHASE FLOW IN UNDULATING PIPELINE