油藏物理学一油藏岩石的毛管压力曲线 the additional pressure in random surface By Laplace'low 水 油 o:interfacial tension R R2:maximum radius of curvature of the curved surface油藏物理学——油藏岩石的毛管压力曲线 the additional pressure in random surface By Laplace’ low ) 1 1 ( 2 R1 R Pc    σ: interfacial tension R1、R2 : maximum radius of curvature of the curved surface