混合原油粘温数学模型研究进展

Study Progress in Viscosity-Temperature Mathematical Model of Mixed Crude Oil

混合原油粘温数学模型的建立对输油管道的设计和运行管理具有重要意义。针对目前混合原油粘度计算尚无普遍适用的粘温数学模型这一现状,综合分析了国内外文献资料提出的混合原油粘温数学模型,介绍了单对数模型、Cragoe模型、双对数模型的数学表达式和适用范围,阐述了近期的相关研究成果,引入带温度影响参数的Bergman和Sutton混合原油粘温数学模型,以及反映混合原油相对密度、摩尔质量与Watson K特性常数关系的数学模型。提出了进行改善混合原油粘温数学模型计算准确度和适用范围的研究建议。

It is significant to establish viscosity-Temperature mathematical model of mixed crude oil for design and management of oil pipeline.In allusion to the situation where there is no generally adaptable viscosity-temperature mathematical model in calculating viscosity of mixed crude oil at present,viscosity-temperature mathematical models for mixed crude oil reported in literatures at home and abroad are comprehensively analyzed.Mathematical expression and its applicability for semi-logarithmic modeI,Cragoe model and double logarithmic are introduced and recent relative research achievements are stated;viscosity-temperature mathematical models for mixed crude oil with temperature influence parameter,Bergman and Sutton viscosity-temperature mathematical models for mixed crude oil as well as the mathematical model to reflect relative density,molecular weight vs Watson K characteristic constant are brought in.Research suggestion to improve the computing accuracy and applicable scope of viscosity-temperature mathematical models for mixed crude oil is presented.