| 管流剪切对加剂原油低温流动性的影响 |
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| 引用本文： | 杜国敏,张劲军.管流剪切对加剂原油低温流动性的影响[J].油气储运,1998,17(12):5-7. |
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| 作者姓名： | 杜国敏 张劲军 |
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| 作者单位： | 中国石油天然气集团公司规划计划局
(杜国敏)，中国石油天然气集团公司规划计划局(张劲军) |
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| 摘 要： | 在长距离的加剂常温输送管道中,加剂原油必然经受长时间的管流剪切。研究表明,在缓慢降温过程中的管流剪切会对油样的低温流动性产生显著影响,影响程度的大小与降温速率及剪切时间密切相关,而且存在一个“最佳降温剪切率”。描述了最佳降温剪切率在加剂原油粘度变化和倾点(凝固点)变化中的体现。研究证实,油样中高碳蜡的含量对中低速剪切效应有影响,影响程度的大小与降温速率及剪切时间密切相关。
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| 关 键 词： | 原油 降凝剂 剪切速率 低温 流动特性 |
Effect of pipeline flow shear on low temperature fluidity of depressant crude oil |
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| Du Guomin and Zhang Jinjun.Effect of pipeline flow shear on low temperature fluidity of depressant crude oil[J].Oil & Gas Storage and Transportation,1998,17(12):5-7. |
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| Authors: | Du Guomin and Zhang Jinjun |
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| Institution: | Du Guomin and Zhang Jinjun |
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| Abstract: | In long distance pipeline transportation with depressant at atmospheric temperature, depressant crude oil is subjected to long terms of pipeline flow shear inevitably. Study showed that the pipeline flow shear in slow drop in temperature will produce an evident effect on low temperature fluidity of oil sample, the degree of influence has close relationship with rates of the drop in temperature and times of shear, and there exists an "optimum temperature cooling shear stress". Described a reflection of the optimum temperature cooling shear stress over the changes of depressant crude oil's viscosity and pour point (set point). Study proved that high carbon wax content in oil sample would has influence on medium and low speed shearing effects, and the degree of the effect has close relationship with temperature cooling rate and shearing time. |
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| Keywords: | crude oil depressant shear rate low temperature flow property |
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