摘要
以高粘度稠油和水为工质,将稠油和水先经搅拌罐混合,再由螺杆泵输送进入实验环道流程,在内径为25.4mm、长52m的水平钢质管道中,模拟了稠油油田现场情况。描述了实验流型,并命名了一种新的流型——Ew/o+D(Ew/o)/w间歇流流型,研究了稠油-水两相管流的压降及反相过程,重点探讨了混合流速对反相的影响。研究结果表明,随着混合流速的增大,反相有提前发生的趋势。在含水率为0.35-0.55时,混合流速的增大将直接引发反相。
The experimental study on heavy oil-water two-phase flow in the horizontal pipes was conducted in a steel pipe loop with 25.4mm in diameter and 52m in length.The yisual observation,local sampling methods and the analysis of pressure drop signals were jointly used,and a new flow pattern of Ew/a-D（Ew/o）w intermittent flow was defined and distinguished.The intermirrent flow was composed of two liquid slugs ineluding slug of water in oil emulsion and water in oil enudsion,wltich dispersed in water pbase.The factors affecting the critical conditions for phase inversion were diseussed.The mixcure velocity was especially studied.The results sliowed that the increment of mixture velocity would reduce the erilienl water fraction for phase inversion and lead to phase inversion directly at a fixed water fraction ranged from 35% to 55%.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2007年第2期140-143,共4页
Acta Petrolei Sinica
基金
国家自然科学基金(No.50474061和No.50674097)项目资助
关键词
稠油-水两相流
流型
压降
混合流速
反相
heavy oil-water two-phase flow
flow partem
pressure drop
mixture velority
phase inversion
