Results show that initial water saturation swi has a strong effect on rate of imbibition of sandstone system.
结果表明，束缚水饱和度对砂岩体系自吸速度有较强的影响。
The constitution of brine used in this test should be the same as the brine used for establishing the initial water saturation.
盐水组成应与建立束缚水饱和度时所用盐水相同。
All of which show the initial water saturation is lower than the irreducible water saturation, that is, there exists ultra-low water saturation in the c.
这说明该油气藏初始含水饱和度低于束缚水饱和度，即存在超低含水饱和度现象。
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