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Experimental and theoretical investigation of the Zaoyuan field heavy oil flow through porous media

机译:枣园油田重油渗流实验与理论研究

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摘要

The behavior of the heavy oil in the Zaoyuan field of China is characterized by experimental and theoretical studies of its rheology and viscoelasticity,and flow properties in porous media.The Zaoyuan heavy oil requires a certain start-up pressure gradient prior to flow initiation and essentially obeys the Herschel-Bulkley rheological model.The conventional rheological experiments reveal that the Zaoyuan heavy oil has a weak thixotropy.The static viscoelastic experiments indicate that the viscoelasticity of the Zaoyuan heavy oil weakens with increasing temperature.The dynamic viscoelastic experiments demonstrate that this heavy oil has a nonlinear viscoelastic property,increasing nonlinearly with increasing shear rate.These observations are justified in accordance with the equation motion of the heavy oil for steady one-dimensional radial flow through porous media,yielding information about the heavy oil pressure profile and flow rate.? 2005 Elsevier B.V.All rights reserved.
机译:枣园油田稠油的流变学,粘弹性,多孔介质流动特性的实验研究和理论研究表明,枣园稠油在开始流动之前需要一定的启动压力梯度,本质上是遵循Herschel-Bulkley流变模型,常规流变实验表明枣园稠油的触变性弱,静态粘弹性实验表明枣园稠油的粘弹性随温度升高而减弱,动态粘弹性实验表明该稠油具有非线性粘弹性,随剪切速率的增加而非线性增加。这些观察结果是根据重油方程式进行的,证明了稳定的一维径向流经多孔介质的运动,并获得了有关重油压力分布和流量的信息。 ? 2005 Elsevier B.V.保留所有权利。

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