A mathematical model for two-phase flow through dual porosity media with imbibition is an integral and differential e-quation with initial and boundary conditions.

Mathematical model of imbibition in fractured low permeability reservoirs;

Study on imbibition production of low permeability sand reservoir

Because of the complexity and specificity of the reservoir space physical nature of fracture reservoir,the effect of imbibition controls the water flooding the dynamic of exploitation and the effect of exploitation.

By a good number of experiments, the dynamic law of natural water imbibition injection and pressure-pulse water imbibition injection for Da'anzai low permeability fracturing reservior were obtained, which can provide theoretical and.

Spontaneous water imbibition phenomena exist in the most of oil-gas reservoirs especially in the oil-gas reservoirs with active edge water or bottom water and fracture-type oil-gas reservoirs.

This method induces an unstable pulse pressure state in the oil reservoir, thus the oil reservoir pressure undergoes the courses of ascending and descending, which can further promotes the capillary imbibition drive action and increase injected steam sweep efficiency to result in descending water cut and enhancing oil recovery.