Laboratory and field scale modelling of two-phase flow in fractured structures

摘要

The imbibition of water in matrix blocks plays a significant role in oil recovery from certain types of fractured reservoirs with a low permeable, porous matrix. These types of fractured reservoirs have a water-wet matrix, strong capillary forces and an inflow of water: either from an aquifer or as a result of forced water injection. Several chalk reservoirs in the North Sea correspond to this description. This paper presents a comparison between laboratory scale experiments, and numerical studies of water imbibition in a fractured porous media. Both the single and the double porosity/permeability approach have been used to simulate the experiments. (au) EFP-96. 11 refs.