摘要
水合物生成会对海底多相混输管道的安全运行造成巨大挑战,而蜡、沥青质等原油组分会显著影响水合物的生成过程,加剧管道内流体流动的复杂性。在此系统分析了针对油水体系的水合物生成动力学模型,综述了油水体系中蜡对水合物成核及生长过程影响的研究成果,总结了沥青质对水合物生成作用规律的研究进展。分析发现:现有油水体系中水合物生成动力学模型缺乏对油品组成的考虑,蜡和沥青质对水合物生成规律的影响尚未取得统一认识。最后建议结合蜡相碳数分布、沥青质的组成和官能团类型进行水合物生成结果分析,采用分子-微观-宏观多尺度方法探究原油组分对水合物生成的影响。
The formation of hydrate will bring about a great challenge to the safe operation of submarine multiphase transportation pipelines,while the components of heavy crude oil,such as wax and asphaltene,will greatly affect the formation process of hydrate,which will further increase the complexity of fluid flow in pipelines.So,the kinetic model of hydrate formation in the oil-water system was analyzed,the study results on the effect of wax on hydrate nucleation and growth in waxy oil-water systems were reviewed,and the research progress on the influence law of asphaltene on hydrate formation was summarized.Through analysis,it is found that the composition of oil products is not considered in the kinetic model of hydrate formation in the existing oil-water system,and no consensus is formed for the influence of wax and asphaltene on hydrate formation.Finally,it is suggested to analyze the hydrate formation results in combination with the distribution of carbon number of waxes,the asphaltene composition and the functional groups,and to study the influence of crude oil components on hydrate formation by molecular-micro-macro multi-scale method.
作者
张东旭
伍奕
杨明
吕杨
黄启玉
ZHANG Dongxu;WU Yi;YANG Ming;LYU Yang;HUANG Qiyu(College of Mechanical and Transportation Engineering,China University of Petroleum Beijing,National Engineering Laboratory for Pipeline Safety,Beijing Key Laboratory of Urban Oil and Gas Distribution Technology;Pipe China West Pipeline Company)
出处
《油气储运》
CAS
北大核心
2022年第3期264-271,共8页
Oil & Gas Storage and Transportation
基金
国家自然科学基金资助项目“含蜡原油常温输送机理及流动改性方法研究”,51534007。
关键词
水合物
蜡
沥青质
油水体系
多相混输管道
流动保障
hydrate
wax
asphaltene
oil-water system
multiphase transportation pipelines
flow assurance
