Water Injection Study in a Block Cycle

Abstract

Block reservoir sand body main front deposition within the channel sand is given priority to, less layers, the thickness of thin sand body development, small scale, more is given priority to with narrow channel sand, water cut rising too fast in the process of oilfield development, plane, small interlayer adjustment scope, difficult to control the production decline and water cut rising speed, oil use degree is high, poor development effect. Under the condition of steady water injection, it is very difficult to expand the affected volume, and most of the water in the water channel is produced by the water channelling to the ground, making the injected water use less and less. It can improve the effect of oilfield development by adopting periodic water injection and preliminary exploration of stable yield path. Cyclic water flooding is the use of the existing well pattern, through the adjustment of the pressure field, the remaining oil used up state, improve the utilization rate of injected water and controlling water cut rising speed, delay of water breakthrough time, enlarge the swept volume of injected water, improve water drive recovery factor. It is an effective way to explore the effect of water flooding in high water content period.