With increasing recovery ratio,edge-water rushed into these reservoirs along high-permeability region and led to high water-cut in wells.

A pure two-fluid model for spray combustion, using unified Eulerian treatment of both gas phase and spray droplet phase, was developed to simulate three-dimensional spray combustion in a dual-inlet dump combustor for ramjet engine.

It is important to know the production of a single layer in the commingled producing well for finding out casing leakage or edge water incursion, designing and adjusting development project,and optimizing reservoir management.