The water intake capacity of the intermediate and low permeablestrata increasing and the water intake capacity of the high permeablestrata reducing are marked by the permeability grade increasing.
渗透率级差越大，低渗透层相对吸水量提高，高渗透层相对吸水量降低幅度越大，调剖效果越显著。
2
The permeable condition of shale reservoirs with stress releasing has been improved, and the current stress field controls the stress distribution of strata.
构造应力释放区的泥岩储层渗透条件得到改善，现今应力场控制着地层压力的分布。
3
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.