水合物浆液流动与流变特性研究进展

水合物浆液技术作为一门新型水合物防治途径和油-气-水多相安全混输的方式逐渐受到油气生产和运输部门的重视。系统综述了国内外水合物浆液流动特征和流变特性的最新研究进展, 主要从研究装置、宏观形态演化、流率/压阻等其他流动参数变化规律及水合物浆液流变性方面进行了详细讨论。介绍了高压流变仪、高压黏度计及水合物流动循环管路等实验装置, 着重分析了水合物循环管路的优缺点;阐述了水相中水合物浆液和油水体系内天然气水合物浆液宏观形态演化的异同;系统研究了水合物形成过程中体系流量/压阻等其他流动参数变化规律;归纳总结了水合物浆液流变性实验和理论模型的研究成果。

Review on flow characteristics and rheological properties of hydrate slurry

Hydrate slurry technology, as a new way for inhibiting hydrate plug and oil-gas-water multiphase flow assurance, has drawn much attention for oil/gas production and transportation department. Therefore, this paper systematically overviews the progress on flow characteristics and rheological properties of hydrate slurry in which common experimental apparatus, morphological evolvement of hydrate slurry, the variation of flow parameters, and hydrate slurry rheology are analyzed. A couple of experiment setups are introduced, including high-pressure rheometer, high-pressure viscometer and hydrate flow loop, in which the pros and cons of hydrate loop is specially introduced. Through observation, the difference of morphological evolvement between hydrate slurry in aqueous phase and natural gas hydrate slurry in oil/gas system is presented. The variation of flow parameters during the formation of hydrate slurry, such as flow rate and pressure drop, is systematically studied. In addition, the experimental and theoretical researches on hydrate slurry rheology are also investigated in this paper. Finally, this paper proposes the existing problems, the research direction and technical route of hydrate slurry.