摘要
Abstract
In the field ofmultiphase flow,the research on heavy oil-water flow has become the focus but it is still in its infancy.The advances in study on heavy oil-water flow at home and abroad were introduced and analyzed from three aspects in this paper,that is,phase inversion,flow pattem transition and pressure drop.In the aspect of phase inversion,the mechanism and influence factors of heavy oil-water flow were described by experts at home and abroad.In terms of flow pattern transition,the factors affecting the transition of stratified flow and dispersed flow were introduced.In the aspect of pressure drop,the factors that affected the pressure drop of stratified flow,dispersed flow and annular flow were analyzed.In addition,the present calculation model and the accuracy of pressure drop prediction were discussed.Furthermore,the paper also focused on the problems in the research of heavy oil-water flow and pointed out two important developments in the future.First,the relevant parameters needed to be revised when the experimental results were applied to the actual pipeline.Second,the influence of the curved pipe on the flow pattem transition and phase inversion of heavy oil-water flow needs to be further studied,which was of great significance to the safety and economic operation of pipeline.关键词
压降/高黏油-水两相流/转相/流型/流动特性Key words
pressure drop/heavy oil-water two-phase flow/phase inversion/flow pattern/flow characteristic分类
数理科学
