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.

• 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。