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引 言Ｏｒｅｇｏｎ盆地的主力油层之一是碳酸盐岩油层 ,其下部层段比上部层段裂缝发育 ,孔隙度也更高。加密井中的裸眼测井曲线表明 ,层段下部的衰竭程度比上部严重 ,下部的含油饱和度很低。衰竭程度差异大的原因是 ,油层纵向渗透率差异大、水驱的波及效率差。层段内岩石物性
INTRODUCTION One of the main oil layers in the Oregon Basin is a carbonate reservoir with fractures developed in the lower and upper layers than in the upper and higher porosity. The open-hole logs in the infill wells show that the lower part of the interval is more depleted than the upper part and the oil saturation in the lower part is very low. The reason for the large difference in the degree of depletion is that there is a large difference in longitudinal permeability of the oil layer and the water flooding is inefficient. Rock physics within the interval