关键词: 水驱特征曲线, 渗透率分布, 油水相对渗透率曲线, 对数正态分布, 油层, 分布类型, 分布型, 近似直线, 变异系数, 基本特征

Abstract: This paper discuses the effects of the permeability distribution on the water flooding characteristic curve (the logarithm of cumulative water injection vs cumulative production). A paper published before indicated that the heterogenity of permeability had an effect on the waterflooding characteristic curve and this paper indicated that the permeability distrabution yields remarkable influences on the form of waterflooding characteristic curve but the main characateristics of the curve is not changed. The reservoir and production data of an oil reservoir are used as an example.