由于受主力层系井网需要,油水井难以转向其它层生产或注水,同时报废井逐年增多、油水井措施实施时间不同步、更新完善新井难以落实的原因,导致了有些非主力层系和土豆砂体难以在现有井况和井网条件下建立起良好的注采关系,一方面造成了油水井注采对应关系单一或低效生产,另一方面是造成了水驱储量的损失。为此,提出了油水一体管柱的设计构想,以期起到增加注水点和注水方向、改善土豆砂体注水开发效果、增加水驱储量等作用,实现一井多用的效果。 Due to the requirement of well pattern in the main layer, oil-water wells are difficult to turn to other layers for production or water injection, meanwhile, the number of reject wells increases year by year and the implementation time of oil and water wells is not synchronized, which makes it difficult to update and perfect new wells, resulting in some non-main strata and potatoes It is difficult for the sand body to establish a good relationship between injection and production under existing well conditions and well patterns. On the one hand, sand and oil wells have caused single or inefficient production according to the corresponding relationship between injection and production, and on the other hand, they have caused losses of water drive reserves. To this end, the design concept of oil-water integrated pipe string is put forward in order to play the role of increasing water injection point and water injection direction, improving water injection development effect of potato sand body, increasing water-flooding reserves and the like, and realizing the multi-purpose effect of a well.