torque and drag

基本解釋

Torque and drag in extended-reach well greatly impact on the efficiency of drilling.
大位移井鉆井的摩阻和扭矩嚴(yán)重影響鉆井時(shí)效。
The buckling will easily occur while drilling, so it is necessary to calculate the buckling during calculating the torque and drag of string.
鉆進(jìn)過(guò)程中鉆柱很容易發(fā)生屈曲，在進(jìn)行鉆柱摩阻扭矩分析時(shí)，考慮鉆柱的屈曲很有必要。
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The beam-column theory was applied to calculate the torque and drag in BHA section, and the mini-element analysis was used in uper BHA section.
對(duì)BHA以上井段，用微單元力平衡分析法具體分析鉆柱的受力，給出不同工況下水平井摩阻力計(jì)算的簡(jiǎn)化條件。