In the present experiments, hydrogen and water were used to investigate the effects of capillary numbers (Ca), capillary diameters and flow directions on the above two parameters.

In the late stage of waterflooding,the key efforts of reservoir operation or management focus on the understanding of remained oil distribution,the rational arrangement of producer-injector spacing and the measures making for development modification,of which to grasp the interwell communication and the injected water flow direction is the chief task.

The effects of flow velocity,turbulence level and flow direction in the cell on hydrodynamics of flotation deinking were also discussed in this paper.