在地下，压力封闭的有效性可以通过计算上层页岩的流体压力剖面来估计。
The effectiveness of pressure seals in the subsurface may be evaluated by making a calculated fluid pressure profile of the overlying shales.
由于低渗透页岩地层流体高温膨胀导致的超孔隙压力，有可能产生有效拉张应力，严重时会导致地层破裂。
Due to the higher thermal expansion of fluid in low permeability shale, the super pore pressure may lead to the development of effective tensile stress and even formation fracturing.
实验结果表明，流体在低渗透多孔介质中渗流时，受有效压力的影响明显。
This result showed that effective pressure was quite obvious when the liquid was moving in low permeating and porous medium.
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