水驱特征曲线研究（一）

STUDY ON THE WATER DISPLACEMENT CURVES-the lst in series.

根据水驱特征曲线所对应的不同含水上升规律，将水驱特征曲线分为Ｎｐ＝ｆ（１－ｆｗ））、Ｎｐ＝ｆ（１－ｆｗ／ｆｗ））、Ｎｐ＝ｆ（ｆｗ）、Ｎｐ＝ｆ（ｌｇ（ｆｗ／１－ｆｗ））、Ｎｐ＝ｆ（ｌｇ１／１－ｆｗ））和广义水驱特征曲线共７种类型。介绍了迄今为止已发表的和我们研究出的水驱特征曲线关系式及相应的Ｎｐ－ｆｗ、ｆｗ－Ｒ、（ｄｆｗ／ｄＲ）－Ｒ关系以及对应的递减曲线Ｑｔ－ｔ和Ｎｐ－ｔ的关系式，它们的推导过程和曲线变化特点。本文首先介绍了Ｎｐ＝ｆ（（１－ｆｗ））类型的共８种水驱特征曲线。

According to different water cut trends reflected by water displacement curves, the water displacement curves can be divided into seven categories: Np=f(1-fw))、Np=f(1-fw/fw))、Np=f(fw)、Np=f(lg(fw/1-fw))、Np=f(lg1/1-fw)) and generalized water displacement curve. This paper summarizes the so far published and our water displacement curves, related relationships of Np-fw,fw-R,(dfw/dR)-R corresponding declinerelationships of Qt-t and Np-t as well as their derivation process and features of curves. First of all, eight types of water displacment curves of Np=f((1-fw)) were described .