Abstract: In order to study the interlayer interference mechanism of water drive reservoir, the development plan of multi⁃layer co⁃production is developed. The core hole and permeability data of Gaotaizi core in the western Daqing central region are statistically analyzed, and the four⁃pipe parallel constant pressure displacement experiment is carried out with artificial cores with different permeability. The effects of injection and production pressure difference and permeability grade difference on recovery and water cut are studied. It is found that there is a reasonable injection⁃production pressure difference in core co⁃production with different permeability. The larger the permeability gradient is, the smaller the overall recovery is. The influence rule of permeability difference on interlayer disturbance is clarified from the mechanism, which provides theoretical basis for subdivision adjustment and water quantity adjustment.

Key words: Interlayer interference, Injection?production pressure difference, Shunting ratio, Permeability ratio

摘要： 为了研究水驱油藏层间干扰机理，制定多层合采开发方案，统计大庆中区西部高台子岩心孔、渗数据，采用不同渗透率的人造岩心进行四管并联恒压驱替实验，研究注采压差、渗透率级差对合采时采收率、含水率的影响。结果表明，不同渗透率岩心合采存在一个合理注采压差，过高或者过低的驱替压差均会导致整体采收率的降低；渗透率级差越大，总体采收率越小；从机理上明确渗透率差异对层间干扰的影响规律，为层段细分调整和层段水量调整提供理论依据。

关键词: 层间干扰, 注采压差, 渗透率级差, 分流比