关于烃-水体系相平衡研究的现状及新进展

随着天然气勘探开发的力度增大，一些特殊的如异常高温、高压、低渗透等气藏的不断涌现，并且所占的比例越来越大，含水的气藏、凝析气藏的相态研究成为一个急需解决的课题。国外近年来已开始重视含水烃类流体的相态研究，正成为气藏、凝析气藏地层流体相态研究与应用的热点，部分研究成果对现有常规油气藏烃类流体相态特征研究的理论和方法提出了挑战。从实验设备、研究机理和理论发展方向对国内外学者的最新研究动向和研究成果进行了分析，并在此基础上介绍了因此所开展的有关考虑气态地层水影响的凝析气藏烃类相态分析的一些研究工作，以期供今后的研究借鉴，指导气藏和凝析气藏的开发和开采。

The Domestic and Abroad Situation and the Latest Development of Hydrocarbon-Water-Phase Equilibria

With the development of gas reservoir and gas condensate reservoir, the conventional study method of hydrocarbonwater phase behavior neglected the existence of water. Actually, with the advance of exploration and development for nature gas resource, the number of peculiar gas reservoir is increasing, such as unconventional high temperature、high pressure and low permeability gas reservoir. So high water content becomes a problem. In abroad, the phase behavior study for hydrocarbonwater phase behavior is becoming more and more important. Some achievements have challenged the conventional theory and method of hydrocarbon phase behavior. This paper discusses the newest study directions and achievements of hydrocarbonwater phase behavior from experiment facilities to study mechanisms, and presents some results achieved on gas condensate reservoir phase analysis with gaseous stratigraphic water, so that the petroleum engineers can use them to guide the oil and gas fields development.