| Abstract: | Equations for calculating the limiting equilibrium shapes of the residual oil pillars in homogeneous and stratified inhomogeneous reservoirs of varying wettability are written within the framework of a two-phase displacement model with allowance for capillary pressure. Comparative calculations for an individual well in a circular reservoir show that, in general, the effect of capillary pressure on the shape and volume of the pillars is not negligibly small and may reach 10% of the pore volume.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 1, pp. 114–123, January–February, 1991. |
