二叠系储集层主要由碳酸盐岩、沉凝灰岩、碎屑岩和火山岩组成。
The reservoirs in Permian is consist of carbonate rock, tuff, clastic rock and volcanic rock.
火山碎屑岩可见熔集块岩、熔角砾岩和熔结凝灰岩。
The volcaniclastic rocks can be seen as fused lumps, fused breccias and fused tuffs.
二连油田某地区有一套沉凝灰岩储层，该储层具有与正常的沉积岩、火山碎屑岩不同的测井响应特征，即高中子、低密度、声波时差无反应。
There is a layer of tuffite reservoir in Erlian oilfield. The log responses of this tuffite reservoir are different from those of normal sedimentary rock and pyroclastic rock.
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