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对双重介质油藏，提出了用聚合物和交联聚合物驱油的方法来提高其采收率。建立了双重介质油藏聚合物驱油和地下交联聚合物驱油的两维两相五组分的双渗双孔数学模型。该模型考虑了溶剂驱替过程中的各种物理化学现象（粘度、阻力系数、吸附、滞留、扩散以及双重介质中的渗吸等），对该模型中所涉及的主要参数提出了易于应用的数学表达式；采用有限差分法对模型进行求解；并进行了一系列的数值计算。分析了聚合物和交联聚合物在双重介质油藏中的渗流规律，研究了聚合物浓度、交联聚合物驱的交联强度以及裂缝渗透率与基质渗透率之比等因素对双重介质油藏驱油效果的影响，比较了聚合物驱和地下交联聚合物驱的驱油效果，得到了一些有价值的结论。为双重介质油藏进行聚合物驱和地下交联聚合物驱提供理论指导和优选方法。
For dual medium reservoirs, polymer and cross-linked polymer flooding methods have been proposed to increase their oil recovery. A two-dimensional two-phase and two-hole mathematical model of two-dimensional two-phase and five-component polymer flooding and cross-linked polymer flooding in dual media reservoir was established. The model takes into account various physico-chemical phenomena (viscosity, drag coefficient, adsorption, retention, diffusion and dual-medium imbibition, etc.) in the solvent flooding process. The main parameters involved in this model are easily applied Mathematical expressions; the finite difference method is used to solve the model; and a series of numerical calculations are carried out. The seepage law of polymer and cross-linked polymer in dual-medium reservoir was analyzed. The effects of polymer concentration, cross-linking strength of cross-linked polymer flooding and ratio of fracture permeability to matrix permeability were studied. The effect of reservoir flooding was compared. The flooding effect of polymer flooding and underground cross-linked polymer flooding was compared, and some valuable conclusions were obtained. It provides a theoretical guide and a preferred method for polymer flooding and cross-linked polymer flooding for dual-medium reservoirs.