盖层封闭的最常见形式是毛管封闭和压力封闭。这两种形式的封闭能力与岩层的孔隙度、渗透率、砂泥岩含量比以及流体压力有密切关系。
The sealing capability of cap rocks is closely related to the porosity, permeability, the ratio of sand to mud contents and fluid pressure of the rocks.
相同孔隙度条件下，砂岩的渗透率比泥岩大得多。
The permeability of sandstone is much bigger than that of mudstone under the same condition.
但二连盆地下白垩统储层的孔隙度和渗透率比银根-额济纳旗盆地要好得多。
However, the reservoir porosity and permeability of lower Cretaceous in Erlian Basin is better than that of Yingen-Ejinaqi Basin.
但二连盆地下白垩统储层的孔隙度和渗透率比银根-额济纳旗盆地要好得多。
However, the reservoir porosity and permeability of lower Cretaceous in Erlian Basin is better than that of Yingen-Ejinaqi Basin.
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