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Terms for subject Drilling containing 有效度 | all forms
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井架有效高度天车大梁底至转盘顶面高度clear mast height
人字架有效高度gin pole clearance
有效垂直应力梯度effective vertical stress gradient
有效孔隙度practical porosity
有效岩心穿透深度effective core penetration
有效工作高度working clearance
有效循环密度effective circulating density
有效水平应力梯度effective horizontal stress gradient
有效钻柱长度active string length
有效高度significant height
生产层有效厚度effective pay thickness
钻机转盘底座大梁下有效高度clear height under rotary table support beam
钻机转盘底座大梁下有效高度clear floor height