胶结作用造成的平均孔隙度丧失为7.1%。
块状层理细砾相的平均渗透率最大，反向交错层理细沙相的平均孔隙度最大。
Mean permeability of massive bedding fine shingle lithofacies and mean porosity of reverse cross bedding fine sand lithofacies are the biggest in all of lithofacies.
吐哈油区三塘湖油田牛圈湖区头屯河组砂岩储层主要为岩屑砂岩，平均孔隙度为19。
The Toutunhe sandstone reservoir in Niuquanhu area of Santanghu oilfield is mainly lithic sandstone, with an average porosity of 19.
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