A Displacement Power Study On The Low Permeability Reservoir

The exploitation of ultra-low permeability reservior has been the main trend of our country’s oil exploitation. The ultra-low permeability reserviors reservior is considerable, but the edge water and bottom water are not avaliable for being the hydrodynamic power. Therefore, the recovery is relatively low by use natural energy explointation. After secondary and tertiary oil recovery, this problem still exists. So, in order to resolve the problem of natural power deficiency, we studied about the displacement power in ultra-low permeability reservior in this paper.By the study of ultra-low permeability reservior characteristics, find out the main factors which influence the displacement power. Studied the water injection pressure, water injection time, reasonable injection-production ratio and well network system in water injection production reservior. And established an effective displacement theory. Together with reservior simulation, by the consideration of each factor, and at last got a result of the value of each factor, when the displacement power could reach the highest level. It resolved the problem of displacement power deficiency; enhanced the effectivity of ultra-low permeability oil field exploitation.