关键词: 高含水, 驱油剂, 同驱层, 高低压区域, 压力干扰, 压力调整和治理

Abstract: 　To solve the problem of low oil production ability of some wells caused by the imbalance of pressure in the water,polymer and ASP flooding of different regions of the same development zone in high water cut block X of Daqing oilfield in the high water cut,statistical calculation, theoretical analysis combined with reservoir numerical modeling are applied. It is concluded that the mutual interference of pressure in the high and low pressure areas of the reservoir plane is mainly caused by the difference in the pressurization effect of different oil displacement reservoirs,and the well number of the high and low pressure areas that need to be adjusted is determined.After that,through increasing the injection rate of water wells in the low⁃pressure area of the reservoir,fracturing the water wells of high⁃pressure and low⁃permeability reservoir block, and rising the production rate of the oil wells of high⁃pressure, medium⁃high⁃permeability regions, the imbalance of reservoir plane pressure is adjusted,and the mutual interference between high⁃pressure and low⁃pressure wells is alleviated.After adjusting the block pressure, the daily increase rate of oil wells in the same drive layer is above 2.5 t,and a good development adjustment effect is obtained.

Key words: High water cut, Oil displacing agent, Flooding layer, High and low pressure area, Pressure interference, Pressure adjustment and management