驱油用聚合物在多孔介质中分配特性实验研究

以大庆油田超高分子量聚合物为例,通过室内实验的方法,研究驱油用聚合物与岩石孔喉匹配特性,并给出不同匹配特性对驱油用聚合物在层间非均质模型中的驱油效果及模型各层阶段分流特征的影响,进一步验证驱油用聚合物线团尺寸与岩石孔喉配伍性关系。结果表明,岩石孔喉半径中值与聚合物分子线团尺寸匹配较好时,聚合物在多孔介质中具有较好的驱油效果和分流特性,聚合物与岩石的孔隙结构具有较好的匹配特性。

Experimental study on streaming characteristics of oil displacement polymer in porous media

By taking ultra-high molecular weight polymer in Daqing oilfield as an example,through the indoor experiment,the matching characteristics between oil displacement polymer and rock pore throat were studied.The different oil displacement effect of different oil displacement characteristics in the interlayer heterogeneity model,and the influence of the distribution characteristics of each layer stage were given,which further verified the compatibility between polymer thread size and rock pore throat size.The study results indicate when the rock pore throat radius values and polymer molecules in thread size match well,the polymer in porous media has a better oil displacement effect and streaming characteristics,the polymer and rock pore structure has good matching characteristics.