在裂缝发育带水驱油的形式主要取决于孔隙渗透率、裂缝渗透率以及驱替压力的大小。
The water drive patterns in fissure developing zones mainly depend on whether pore permeability, fissure permeability and displacement pressure are high or low.
文中进行了水驱油和氮气驱油试验，以比较驱替效果，探究超低渗油藏的驱替机理。
Water - drive and nitrogen - drive experiments are performed to compare their displacement effects and study the displacing mechanism of ultra - low permeability reservoirs.
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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