用毛管压力曲线确定原始含油饱和度

INITIAL OIL SATURATION DETERMINATION BY CAPILLARY PRESSURE CURVE

本文从统计规律入手，探讨用毛管压力曲线确定油层有效孔隙半径下限时，不同物性条件的储层对该下限值的影响，以及由此确定的含油饱和度与地展条件下原始含油饱和度的差异。储层物性越好，该下限值越偏大，而求得的含油饱和度越偏低。

According to the statistical distribution, the paper describes the effect of the different physical characteristic reservoirs on the low limit determination of the effective pore radius by capillary pressure curves, and the difference between the initial oil saturation and the calculated oil saturation with the above method is also discussed.