论文部分内容阅读
对加拿大、利比亚、尼日利亚、印度、扎伊尔和委内瑞拉等国家不同种类的原油流变性进行了研究,发现含蜡原油中的蜡含量对流变性影响较大。因此,在新的计算模型中引入了蜡含量一项。该模型所研究的剪切率及温度范围,其相关系数高95.71%,可以认为该模型能很好地描述含蜡原油的稳态行为。采用旋转粘度计在不同温度(9、12、15、18、21和24℃)和不同含蜡浓度(2%、4%、6%、8%)下,测试含蜡原油的流变特性。其结果是随着温度的下降,剪切率上升;在低温、低剪切率下,随着温度降低,粘度下降速度比在高温、高剪切率下相对更快。
Studies on the rheology of different crude oils in Canada, Libya, Nigeria, India, Zaire and Venezuela found that wax content in waxy crude oil had a significant effect on rheology. Therefore, the wax content was introduced into the new calculation model. The correlation coefficient of the shear rate and temperature range studied by this model is 95.71%, which can be considered as a good description of the steady-state behavior of waxy crude oil. The rheological properties of waxy crude oil were tested using a rotational viscometer at different temperatures (9, 12, 15, 18, 21 and 24 ° C) and different wax concentrations (2%, 4%, 6%, 8%). As a result, the shear rate increases as the temperature decreases, and at lower temperature and lower shear rate, the viscosity decreases more rapidly than at high temperature and high shear rates as the temperature decreases.