Laboratory Studies of In-Depth Colloidal Dispersion Gel Technology for Daqing Oil Field

Abstract To investigate the possibility of using in-depth colloidal dispersion gel (CDG) enhanced oil recovery technology for the Daqing Oil Field, a cooperative study conducted by TIORCO, INC., and the Daqing Petroleum Administrative Bureau, was initiated in 1997. The study included a training program to ensure consistent laboratory methods and techniques, tests conducted in both laboratories, and computer simulation. The lab work included screening tests to determine the best polymer and formulation to use for CDG's at Daqing, followed by performance of the optimum CDG formulation in core experiments. Results from the static screening tests and core displacement studies show that the CDG process can further increase the oil recovery over straight polymer flooding and, indeed, is a viable EOR process for the Daqing Oil Field. This paper reports the details of the laboratory studies and initial simulation results which have resulted in plans for a field pilot test.