Study on Fracturing Time and Quantitative Method of Polymer Flooding

With the increasing scale of polymer flooding in Daqing Oilfield and the gradual deterioration of reservoir properties, a large number of fracturing measures are required to maintain the normal injection and production of the block in the process of polymer flooding to ensure the oil displacement effect. Due to the strong phasing and rapid change of water cut and oil recovery in polymer flooding, the research on the influencing factors of polymer flooding fracturing has not reached the quantitative stage. Through big data analysis, numerical simulation and other methods, this paper clarifies the factors affecting the fracturing effect of polymer flooding, and realizes the quantification of the impact factors. It is the first time to realize the quantification of the timing of the measures. The instantaneous reservoir state is used to characterize the timing. In the analysis of polymer flooding reservoir, the reservoir state implementation. It has strong applicability and broad promotion prospects can be the oil-water distribution state, the accumulation state of the underground oil displacement system, etc. Quantification is conducive to accurately grasp the timing of the measures, and is of great significance. A formulaic optimization and quantification method has been formed by comprehensively considering the effect impact factors and fracturing opportunity quantification. The method has a large expansion space for further transformation, which improves the optimization efficiency and measure effect, and is convenient for later software algorithm.