Abstract: The mobility control capacity research of hydrophobic associating polymer and linear polymer without associating capacity suggests that in high permeability porous media, under the condition of high calcium cation and magnesium cation concentration, the mobility control capacity of hydrophobic associating polymer with low molecular weight is better than polymer with high molecular weight and without associating capacity. After mechanical shear and porous media shear, resistance factor build by hydrophobic associating polymer with low molecular weight is almost equal to that of the linear polymer, but the residual resistance factor is higher than that of the latter, so it can be used to improve the water flooding sweeping volume of high permeability reservoir. The conclusion can be drew as follows: under the condition of high calcium cation and magnesium cation concentration, as a result of its solution structure build by associating action, polymer with low molecular weight and associating capacity is fit to the mobility control of high permeability Bohai oil field where the polymer is injected with high flow rate. It offers theoretical and technical support for polymer flooding in offshore oil field.〖KH*2D〗

Key words: hydrophobic associating polymer, high permeability porous media, associating action, mobility control