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使用不同流变仪及不同测试系统,采用剪切速率阶跃上升的加载方式,对大庆-冀东混合原油进行触变性实验,并对实验结果进行对比分析。Anton Paar流变仪的重复性好于HAAKE VT550旋转流变仪,使用Anton Paar流变仪测得的原油流变性数据较稳定,波动较小,但两种流变仪测得的胶凝原油的屈服值和平衡值的实验误差均小于23%;内外筒直径比相近的不同测试系统测得的胶凝原油的屈服值和平衡值的实验误差均小于25%,但内外筒间隙越小的测试系统,蜡晶结构裂降越快,且得到的实验数据越不稳定。(表3,图3,参12)
Using different rheometers and different test systems, the thixotropy experiment of Daqing-Jidong mixed crude oil was carried out by using the step-up method of shear rate increase, and the experimental results were compared and analyzed. Anton Paar rheometer reproducibility is better than HAAKE VT550 rotary rheometer, the use of Anton Paar rheometer measured crude rheology data more stable, less volatile, but the two rheometer gelling crude oil measured The experimental error of the yield value and the balance value are both less than 23%. The experimental errors of the yield value and the balance value of the gelling crude oil measured by different test systems with similar inner diameter and outer diameter are less than 25% System, wax crystal structure faster drop, and the experimental data obtained more unstable. (Table 3, Figure 3, reference 12)