Depth profile control in water injector is not only an important technology of secondaryoilrecovery, but also the technical key of tertiary oil recovery in severe heterogeneous oil reservoirs.
注水井深度调剖不仅是一项重要的二次采油技术，而且是严重非均质油藏进行三次采油的技术关键。
2
Compared to secondaryrecovery, it improves the sweep volume and efficiency of oil displacement by the AIDS of physical and chemical dual effect.
与二次采油相比，它借助物理和化学的双重作用，提高驱油的波及体积和效率。
3
Oil that does not move when fluids are flowed through the rock in normal conditions, for example primary and secondaryrecovery, and invasion.