Study on the Production Decline Law of Typical Oil Wells in Xifeng Oilfield

Now common methods to study the production decline law include graphic method,trial and error method,curve displacement method,typical curve fitting method and binary regression method.Application of all these methods needs to establish linear relations,existence or not of the linear relationship and coefficient of the linear relationship are main indices to judge decline law types.In this paper,the graphical method was used to analyze the production decline law of typical wells in Xifeng oilfield.