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双曲线递减地于产量预测是一个非常有用的方法，Ａｒｐｓ（阿浦斯）的产量递减分析法，在油气藏工程计算中得到了广泛的应用，当根据递减阶段的实际数据递减类型之后，可建立相应的相关公式，并对油气藏或油气井的未来产量，累积产量能够进行有效的预测。文章对Ａｒｐｓ的双曲线递减给予简化，得到了一个累积产量和产量变化关系的通式，当取递减指数ｎ＝０和０．５时，可分别得到指数递减和修正的卡彼托夫递减和修正的卡彼托夫递减指

SIMPLIFICATION OF HYPERBOLIC DECLINE AND THE INTERCEPT METHOD OF DETERMINING RECOVERABLE RESERVES

The hyperbolic decline is a very useful method for production forecast. After judging the decline type by the data of decline stage,the realative formula is set up, and the future and accumulated production of oil-gas reservoir or oil-gas well are forecasted effectively. A simplified formula for Arps hyperbolic decline equation is given out, and the general formula of cumulative production with production change relation is obtained. When decline exponent n=0 and n=0. 5,the relational expressions of cumulative production of exponential decline and modified Kopatove decline with production are obtained. By using different n exponents the intercept method can determin the biggest cumulative production and recoverable reserve in decline stage of oil-gas reservoir.