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本文从毛管压力曲线与油气藏饱和度形成条件相似的前提出发,分析了毛管压力曲线上影响束缚水饱和度因素有油气聚集的驱动压力、油层物性及沉积物的颗粒分选好坏等。在此基础上阐明了毛管压力曲线上束缚水饱和度取点原则,汞毛管压力与油水毛管压力之间的换算关系。最终绘制了束缚水饱和度解释图版。此类图版适用于相同沉积环境下不同油气藏的油层气层饱和度解释。在某些适合条件下可用此方法研究饱和度解释图版,来代替打油基密闭取心井。
Based on the premise that the capillary pressure curve is similar to the formation condition of reservoir saturation, the driving pressure that affects the irreducible water saturation on the capillary pressure curve, the physical property of the reservoir and the particle sorting of the sediment are analyzed. On this basis, the principle of taking the point of irreducible water saturation on the capillary pressure curve and the relationship between the capillary pressure and the capillary pressure of oil and water are expounded. The final interpretation of the irreducible water saturation interpretation chart. Such plates are suitable for interpretation of reservoir saturation in different reservoirs in the same depositional environment. In some suitable conditions, this method can be used to study the saturation interpretation plate, instead of oil-based closed coring wells.