孔隙渗透率通常很大，但地层渗透率却不大。
Pore permeability is usually very high, but the reservoir permeability is not very high.
井底附近地层渗透率降低比改善对调查半径的影响要大。
If skin factor of formation damage is more, its radius of investigation is less.
上覆地层压力对渗透率及孔隙结构特征影响很大。
Overburden pressure has a strong influence on permeability and pore structure.
上覆地层压力对渗透率及孔隙结构特征影响很大。
Overburden pressure has a strong influence on permeability and pore structure.
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