By assuming the existence of mercury-ejection threshold pressure and mercury-ejection ending for extreme low-permeable rock, a necessary correction for mercury-ejection volume was made.

在考虑退汞麻痹效应和特低渗透率岩样退汞中止点假定条件下，对退汞量作了必要的修正。

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This paper performs an acoustic parameters testing of 20 pieces of low porous and permeable rock sample of Well Fangshen 8 in Daqing Oil Field under the condition of fully saturated water and gas.

对大庆油田芳深8井20块低孔、低渗岩样，在完全饱和水和气的条件下进行声学参数测试。

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The reservoir sandstone is typical low porous and low permeable reservoir rock.

该储层砂岩是典型的低孔、低渗储集岩。

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Mr. PILLER: Only in recent years did they figure out how to get the gas out of the shale, which is a less permeable rock.

NPR: Drilling for Gas in Dallas-Fort Worth