Cyclic Injection Scheme Optimization Research in Gaotaizi Reservoirs of Daqing Oilfield

With the deepening of the oilfield development, oil field has entered the high water cut period. The rate of water cut increasing and production decline are accelerate. It is needed to adjust the way of exploitation in order to improve oilfield exploitation effect. Cyclic water flooding is one of effective means to improve oilfield development effect with the advantages of small investment, quick effect, reduce inefficient output and improve oilfield overall development benefit. In this paper, we use the means of numerical simulation to study the injection timing and reasonable working systems of different types of Wells. Technical basis is provided for further study and field test.