滞留作用不仅阻断了驱油通道，导致洗油效率下降，而且还会引起地层堵塞，使注入压力升高。
The role of retention will not only block flooding channel, resulting in displacement efficiency declined, but also cause formation plugging, leading to injection pressure increased.
随着底水驱替速率增加，水沿着阻力最小的大型裂缝迅速突破，各种影响基质岩块采出程度的因素，都改变不了剩余油大量滞留于这部分孔喉空间的事实。
The factors influencing matrix block recovery can not change the fact that a large amount of remaining oil is left in the pore and throat space.
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