Theoretical mode of overall fracturing optimization plan

A new concept and method of overall hydraulic fracturing optimization is put forward in the paper taking the reservoir of Fan-128 located in Shengli Daluhu Oilfield as a field case.In this study,the integral reservoir which contains hydraulic fractures is regarded as an research element, the future reservoir development and its adjustment as well as the evaluation of fracturing effect as an ultimate object,and the distribution of dynamic and static parameters of geology and production as basic ones;finally,the fuzzy multiple factors decision-making method is utilized to optimize proppant fracture length. The proposed theoretical mode can take into account many factors such as the effective permeability,effective thickness,present formation pressure and analytical water cut as well,etc.With the help of above theoretical mode,the optimum proppant fracture length of various development stage may be available in a relatively high precision,which may change the abstract character of past overall fracturing optimization plan and in the meantime, improve the effectiveness and instruction of the overall fracturing optimization plan to single well fracturing design.Verified by other reliable technique,the result of the proposed mode in the paper is precise and it is convenient to put it into field application.