Abstract: In the field of multiphase 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 pattern 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 pattern 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.

Key words: pressure drop, heavy oil-water two-phase flow, phase inversion, flow pattern, flow characteristic

摘要： 在多相流研究领域，高黏油水两相流已成为研究重点，但该领域的研究仍处于起步阶段。本文从转相、流型转换和压降规律三个方面对国内外高黏油水两相流的研究进展进行了介绍和分析。在转相方面，通过国内外学者的研究阐述了高黏油水两相流转相发生的机理及影响因素；在流型转换方面，介绍了影响分层流和分散流等流型转换的因素；在压降规律方面，分析了影响分层流、分散流和环状流压降规律的因素，并对现有的压降计算模型及压降预测的准确性问题进行了探讨。此外，还重点阐述了高黏油水两相流研究存在的不足与今后研究的两个重要发展方向：一是将实验得到的结论与成果应用于实际管道时应进行相关参数的修正；二是弯管对高黏油水两相流流型转换及转相的影响需要进一步研究，它们对于管道的安全和经济运行具有重要意义。

关键词: 压降, 高黏油-水两相流, 转相, 流型, 流动特性