聚合物驱油提高采收率的应用已经比较常见,但聚合物是如何提高采收率的呢? 聚合物驱油是三次采油的重要方法之一,是二次采油中注水采油的发展。注水采油由于成本低、见效快、施工方便等优点得到了普遍使用。但是,在水驱油中,由于水的流度大于油的流度以及油层的非均质性,所以在排驱过程中,随着油水前缘的推进,会造成注入水沿高渗透层及高渗区不均匀推进,在纵向上形成单层突进,在横向上形成舌进,使油气井过早水 Polymer oil displacement to enhance oil recovery has been more common applications, but how the polymer is to enhance oil recovery rate? Polymer flooding is one of the important methods of tertiary recovery, secondary recovery is the development of water injection. Water injection production due to low cost, quick, easy construction and other advantages have been widely used. However, in water flooding, as the flow of water is greater than the flow of oil and the heterogeneity of the oil layer, as the oil-water front progresses during the drainage process, water will be injected along the high-permeability layer and Unevenly advanced in the hyperosmotic zone, the formation of a single layer in the longitudinal direction of the sudden, the tongue formed in the lateral direction, so that wells premature water