net sandstone的意思|示意

The major pay bed is low permeable ultra dense sandstone. Its permeability and pore throat texture are very sensitive to the net pressure of overlying strata.

主要产层为低渗透超致密砂岩，其渗透率和孔喉结构对上覆地层净压力很敏感。

Theoretical study shows the net stress is not equal to the effective stress because of the existing microcracks in the low permeability sandstone.

理论研究表明，低渗岩石由于存在微裂缝，净应力不等于有效应力。