The main causes of side-abrasion of a sucker rod in polymer holes are analyzed: It is due to the resistance during down stroke and normal force attached by the polymer.

Field application of profile control throughout polymer flooding;

Macroscopic and microscopic distribution of the remaining oil after polymer flooding;

The proper injection-production ratio of polymer flooding and recovery in class Ⅲ reservoirs in Daqing Oilfield;

Test of oil-water separation from polymer drive output liquid in Gaoshangpu operation region;

The residual reserves of class 1 and 2 oil layers in the Daqing Oilfield, which are suitable for polymer drive, decreased annually along with the increase of polymer injection area of the main oil-layers.

The Practice and Results of Polymer Flood Programs at Shengli Oil Fields;

An Analysis of Performance and Efficiency of Polymer Flood at Ng4 Cell of Central Region 1 of Gudao;

The Effect on Oil Displacement Efficiency of Viscosity of Alkaline-Surfactant-Polymer and Polymer Flooding Solutions;

A new method for determining the mass concentration of the polymer in the produced fluid of polymer displacement;

The obvious water precipitation reduction and oil increase are achieved in polymer displacement in Gudao Oilfield.

In this paper, a new method for calculation of polymer displacement relative permeabilities from displacement data has been developed, after being considered the rheological behavior and permeability reduction of polymer solution flowing in porous medium.