Phase equilibria data of hydrocarbon + water systems at high-pressures and high-temperatures are important for enhanced oil recovery, upgrading and biomass gasification. While numerous studies have reported on well-defined low molecular weight hydrocarbons and water mixtures over a remarkably wide range of conditions, there are limited studies on multicomponent hydrocarbons (including heavy oils bitumen) in the presence of water. In this study, a review on the phase equilibria of hydrocarbon + water mixtures at subcritical, near-critical and supercritical conditions was carried out to identify the knowledge gaps and make recommendations for future studies. Recommendations for potential research directions include phase equilibria, phase behavior and thermodynamic properties studies of heavy oils (including bitumen) + water and heavy oils (including bitumen) + water + salts at near-critical and supercritical regions for a better understanding of these complex systems.

高压和高温下烃 + 水系统的相平衡数据对于提高石油采收率、升级和生物质气化非常重要。虽然许多研究报告了在非常广泛的条件下明确定义的低分子量碳氢化合物和水混合物，但对存在水的多组分碳氢化合物（包括重油沥青）的研究有限。在这项研究中，对亚临界、近临界和超临界条件下烃 + 水混合物的相平衡进行了审查，以确定知识差距并为未来的研究提出建议。对潜在研究方向的建议包括相平衡、