Optimization of polymer flooding method based on pressure distribution forecasting model

In the light of the existing aeolotropies and asymmetry of well spacing during the field development process in reality, underground pressure distribution forecasting model that is for polymer flooding method when multiple injection or production wells are adopted which is erected, at the same time, in the light of the characteristics of the surface polymer injection system like large scale, variables and parameters, interdependency, diverse structures and so on, the large scale polymer injection system is divided to a series of sub systems, while the bypass pressure drop equation, and correlation equation between pressure which are established as well. Thereby the general model for surface pressure control is derived, as well as, the optimization operation of large scale polymer injection system is realized.