The relationship between the irreducible water saturation and the porosity and gas column height is put forward in the paper.

文章给出了束缚水饱和度与孔隙度和自由水界面以上高度的关系。

The starting pressure of volcanic gas reservoir shows exponential relationship with irreducible water saturation and air permeability.

火山岩气藏启动压力与束缚水饱和度和空气渗透率均呈幂指数关系；

In reservoir assessment, the irreducible water saturation is one of the important parameters of estimating reserves by volumetric method.

在地层评价中，束缚水饱和度是体积法计算储量时的重要参数之一。

It can be effectually identified that whether a reservoir only produces oil through the cross plot of water saturation and irreducible water saturation.

根据储层含水饱和度与束缚水饱和度的交会图版可以有效地判定高束缚水饱和度低阻储层的性质。

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。