关键词: 水驱, 曲线, 可采储量, 采出程度

Abstract: In the history of water displacement curve studies,there are two kinds of methods usedup to date. One is to discuss the relations of cumulative production,cumulative water production and cumulative fluid production. The other is to discuss the relations between watercut and recovery of recoverable reserves. This later relation can be used to study differentwater cut changing pattern,various types of convex,concave and S curve on the carnationcoordinate svstem in which the recovery of recoverable reserves as obvious and the water cutas ordinate are discussed.There must exist some relations between water displacement curveand the water cut and recovery of recoverable reserves curve,but the former can only revealone type of the later curve. We define the generalized water displacement curve as:a waterdisplacement curve formula which can express many type of curves of the water cut and recovery relations simultaneously. This paper proposed a new generalized water displacementcurve formula, discusses its forms and characters.It concludes that:the direction of waterdisplacement curve research should search a rnore simple,more precise and more practicalgeneralized water drive curve formula.

Key words: water drive, curve, recoverable reserves, recovery percent of reserves