Polymer viscoelastic solution is the non-Newtonian fluid and widely used in oil production. In the process of seepage, the mechanism of the polymer solution with different molecular coil dimensions (Dh) flooding on remaining oil is unknown. By using the dynamic light scattering instrument, the molecular coil dimension of the polymer solution is tested. By using the HAAKE rheometer, the creep recovery test data of the polymer solution under the same creep time condition are obtained. The effects of polymer solutions with different Dh on residual oil are observed, by using the visible pore model. The results show that the higher the molecular weight (M_w) of the polymer, the larger the size of the molecular coil dimension. The elasticity characteristics of the polymer solution are sensitive to the molecular coil dimension. As Dh of polymer molecules becomes larger, the contribution of the elastic portion to the viscosity of the polymer solution increases. The higher the M_w of polymer is, the longer the molecular chain is and the size of Dh is larger. On the condition of the polymer solution with different M_w with 2.5 g/L, when Dh is between 320.0 nm and 327.8 nm, the ratio of the elastic part in the apparent viscosity exceeds the proportion of the viscous part, and the polymer solution composition after these data can be used as a comparative study of elasticity for residual oil use. In the visible pore model, the pore-throat ratio is 3.5, the E_R of water flooding is 54.26%, the E_R of the polymer solution with Dh = 159.7 nm is 75.28%, and the increase of E_R is 21.02% than that of water flooding. With the increase of Dh to 327.8 nm, the final E_R of the experimental polymer solution is 97.82%, and the increase of E_R of the polymer solution than that of water flooding is 43.56%. However, in the model with a pore-throat ratio of 7.0 and the same polymer solution with Dh = 327.8 nm, the increase of E_R of the polymer solution is only 10.44% higher than that of water flooding. The effect of the polymer solution with the same Dh is deteriorated with the increase of the pore-throat ratio.

中文翻译：

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油田生产污水构成的聚合物溶液的分子线圈尺寸与储能模量之间的关系。

聚合物粘弹性溶液是非牛顿流体，广泛用于石油生产中。在渗流过程中，具有不同分子线圈尺寸（Dh）的聚合物溶液在剩余油上的驱替机理尚不清楚。通过使用动态光散射仪器，测试了聚合物溶液的分子线圈尺寸。通过使用HAAKE流变仪，获得在相同蠕变时间条件下聚合物溶液的蠕变恢复测试数据。通过使用可见孔模型，观察了具有不同Dh的聚合物溶液对残余油的影响。结果表明，分子量（M _w）的聚合物，分子线圈尺寸的尺寸越大。聚合物溶液的弹性特性对分子线圈尺寸敏感。随着聚合物分子的Dh变大，弹性部分对聚合物溶液的粘度的贡献增加。聚合物的M _w越高，分子链越长，Dh的尺寸越大。在M _w不同的聚合物溶液的条件下当Dh为2.5 g / L时，当Dh在320.0 nm至327.8 nm之间时，表观粘度中弹性部分的比例超过了粘性部分的比例，这些数据之后的聚合物溶液组成可以用作剩余油使用的弹性。在可见孔模型，孔喉比为3.5时，ê _ř注水的是54.26％，则È _ř与DH = 159.7纳米的聚合物溶液是75.28％，并且增加Ë _ř比21.02％那是水驱。随着Dh增加到327.8 nm，实验聚合物溶液的最终E _R为97.82％，并且E _R增加聚合物溶液的比水驱的百分比为43.56％。但是，在孔喉比为7.0且相同的聚合物溶液的Dh = 327.8 nm的模型中，聚合物溶液的E _R的增加仅比注水的E _R的增加高10.44％。随着孔喉比的增加，具有相同Dh的聚合物溶液的效果变差。