摘要
本文利用注水驱模型数值模拟方法研究了岩电—相驱过程中岩石电阻率的变化规律。研究结果表明 ,水淹过程中岩石电阻率与含水饱和度之间的关系曲线基本上为“S”型 ,目前国内外常见的“U”型曲线仅是“S”型曲线的一种特例。本文通过数值模拟计算了油藏储渗性质和注入水电阻率对曲线形态的影响 。
The paper studied varying rule for rock resistivity in lithoelectric phase displacement process using numerical modeling method for water drive model.The studied results show that the relational curves between rock resistivity and water saturation in waterflooded process basically are sigmoidal,and U type curves usually seen currently abroad only are a special case of sigmoidal curves.The paper calculated the effect of reservoir property and water injected resistivity on curve types by numerical modeling and provided a reliable theoretical basis for correct evaluating waterflooded rule of reservoir and interpreting remaining oil saturation.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2000年第6期757-762,共6页
Oil Geophysical Prospecting
关键词
油藏水驱
岩石性质
电阻率
含水饱和度
water drive, rock property, resistivity, water saturation, numerical modeling
