不同测试条件对含蜡原油流变特性的影响研究  

THE EFFECT OF EXPERIMENTAL CONDITIONS ON RHEOLOGICAL PARAMETERS OF WAXY OIL

作　　者：田华[1] 敬加强[1] 敬灵机 熊小琴[1] 路平[1] 

机构地区：[1]'油气藏地质及开发工程'国家重点实验室.西南石油大学,四川成都610500 [2]四川天弛油建公司

出　　处：《西南石油大学学报（自然科学版）》2007年第4期125-128,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：以大庆新庙原油为研究对象,采用流变学测试与分析方法,探讨了降温速率及剪切速率对原油低温静屈服值的影响、测试时间和冷却速率对原油低温流变曲线的影响,以及热处理温度、降温方式及降温速率对原油粘温曲线的影响。结果表明,非牛顿含蜡原油的流变特性强烈地依赖于测试条件。在此基础上,提出了含蜡原油流变特性测试思路,通过模拟计算或合理设计来确定降温速率、剪切速率、测试时间等测试条件,为其它含蜡原油流变特性的测定提供了参考。It is very difficult to measure rheological parameters accurately because of the complicated components of waxy crude oils and the rheological parameters depending on the thermal history,shear history and other uncertain factors.The crude oil from Xinmiao,Daqing oilfield,is used as a sample.The effects of cooling and shear rate,test time and cooling rate on its static yield stress and rheological curve at low temperature respectively,the influence of heat treatment temperature,cooling methods and cooling rate on its viscosity-temperature curve are all discussed by using the rheological test and analysis methods.The results indicate that the rheological parameters of a non-Newtonian waxy crude oil highly depend on the experimental conditions.Then a decision thinking that such experimental conditions as cooling rate,shear rate and test time should be decided by simulation calculation and reasonable design based on various test purposes is proposed,which provides a reference to the measurement of rheological parameters of other waxy oils.

关 键 词：含蜡原油 非牛顿流体 流变参数 测试条件 实验方法 

分 类 号：TE81[石油与天然气工程—油气储运工程]