Abstract: In the course of the twenty years of development,the Daqing oil field has worked out a unique technique of producing the mufti-zones separately with success,particularly in wells of medium depth in sandstone pools.The technique is suited for producing wells in stages of no water cut,low water cut and medium water cut.It consists mainly of separate water injection of mufti-zones in the same well through a single pipe,separate oil production of mufti-zones,separate stimulation and testing of muftizones.Operators are always well aware of the amounts of water injected,oil produced,pressure and water production of the mufti-zones.Experiments are now under way to make the technique suitable for wells with high water cut.Rational application of the technique to the different stages of oil field development in the different blocks and different wells have ensured the smooth operation of the development program and stabilized the field's high yield.

摘要： 大庆油田已经开发二十年了.油田地下形势发生了很大的变化,采油工艺也随之得到很大的发展.采油工艺是认识油层,搞清地下分层开采状况的重要手段,是实现油田开发方案,改造油层的进攻性武器.二十年来,采油工艺从油田生产需要出发,根据油田地质开发动态的变化,发展了一整套符合大庆油田实际情况的具有自己特点的分层开采工艺.在中深井多层状砂岩油藏的分层开采工艺方面,达到了较高的技术水平.这一整套采油工艺技术,合理地运用到油田的各个开发阶段,运用到每口油水井上,从而保证了油田开发方案的正确实施,带来了油田的高产稳产.