Filtration studies of polymer solution applied in flow deviation technologies in Kazakhstan fields
The paper deals with the results of laboratory experiments on filtration characteristics of cross-linked polymer systems (CPS) based on the “FP-307” PAA polymer solution and A grade crosslinker of acetate-chrome applied in flow deviation technologies. The studies on the estimation of CPS filtration characteristics have been carried out on the linear two-layer formation model with different interlayer permeability. Obtained results justified that the higher is formation homogeneity (permeability ratio of high permeability and low permeability interlayers), the more CPS enter into the high permeability interlayer. As a result of formation of flow deviation screen in high permeability interlayers, a regulation possibility of filtration flows direction and logging into the operation of low-permeable interlayers appears.