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讨论了金刚石钻进的岩石可钻性。认为钻速并不是可钻性,而是可钻性的表观反映。划分岩石可钻性不能用钻速作标准。影响钻速的因素包括反映生产技术水平的可控因素和反映岩石属性的不可控因素。不可控因素的量值指标——可钻值,可表示为压入硬度的指数函数。它反映了金刚石回转钻进时岩石抵抗破碎的能力,可用以划分可钻性级别的指标。根据水平系数和可钻值,可预估钻速。
Diamond drillability of rock is discussed. Drilling speed is not considered drillability, but the apparent reflection of drillability. Divided rock drillability can not be used as a standard drilling rate. Factors that affect drill speed include controllable factors that reflect the level of production technology and uncontrollable factors that reflect rock properties. The value of uncontrollable factors - can drill value, expressed as an exponential function of press-in hardness. It reflects the ability of the rock to resist crushing when the diamond is rocked and can be used to divide the index of drillability levels. Based on the horizontal factor and the drillable value, the penetration rate can be estimated.