衰减曲线分析方法评价

An evaluation of production decline curves.

修正的衰减曲线方程为三参数方程，难以直接应用线性回归分析求解，为此相继发表了多种分析方法。基于精度分析，对９种方法（三点配线法，典型曲线拟合法，诺模图法，６种线性分析法）进行了评价，并对方法的应用领域进行了初步分析，认为其中的３种线性分析法操作既简便，预测精度又高，值得在油气田产量预测中推广使用。图２表３参１６（陈志宏摘）

Modified production declining curve is a 3 parameter equation and is very hard to get its solution by means of linear regression, and thus a number of different analysis techniques have been described in various papers. Based on an accuracy analysis, 9 methods (3 point linearization method, matching with type curve method, matching with a nomogram method, and 3 other linearization methods) were evaluated, and the category of application of these methods are analyzed preliminarily. It is recognized that 3 linearization methods are easy to operate with high accuracy, thus they can be generated in the prediction of future production rate of oil/gas fields.