Experimental analysis of polymer injection ability under constant pressure and speed

This paper carries out studies on injection ability of polymer under constant pressure and in constant speed indoor. In constant velocity method, the speed of 0.1ml/min is used as a constant velocity to study polymer injection ability in 700mD artificial cores with different concentrations and molecular weight. In constant pressure method, three injection pressures are used to simulate the actual oil reservoirs and the injection ability of polymer is studied in the same core. It can be seen that constant pressure method can better simulate the actual oil reservoir from the results of these two kinds of laboratory experiments. The injection speed of 0.1ml/min is used as a criteria to estimate polymer injection ability and the polymer injection ability is given out in 700mD cores.