论文部分内容阅读
一钻具重量的计算计算钻具重量的目的,在于正确掌握钻头破坏岩石的压力,从而更有效地克取岩石.(一)直孔中钻具重量的计算钻具处于垂直状态下,作用给孔底的压力(图6-1).1.钻孔中无泥浆或其它液体时的计算公式:Q=qL……………………(6-1)式中:Q-钻具总重(公斤)q-钻具每米重量(公斤)
Calculation of the Weight of a Drill The purpose of calculating the weight of a drill is to correctly grasp the pressure at which the drill bit breaks the rock and thereby more effectively extract the rock.A calculation of the weight of a drill in a straight hole The drill is in a vertical position, Hole pressure (Fig. 6-1) .1 Calculation formula when there is no mud or other liquid in the hole: Q = qL ........................ (6-1) Where: Q- Weight (kg) q- drill weight per meter (kg)