... 致密介质：compact medium 致密灰岩：compact limestone 致密褐砂：cherokite ...
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The shell limestone is thin bed, compact and anisotropism, so the reservoir is of low porosity, low permeability and pore fracture character.
介壳灰岩层薄、致密、非均质性强，属低孔、低渗孔隙—裂缝性储层。
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