torque and drag

基本解释

Torque and drag in extended-reach well greatly impact on the efficiency of drilling.
大位移井鑽井的摩阻和扭矩嚴重影響鑽井時傚。
The buckling will easily occur while drilling, so it is necessary to calculate the buckling during calculating the torque and drag of string.
鑽進過程中鑽柱很容易發生屈曲，在進行鑽柱摩阻扭矩分析時，考慮鑽柱的屈曲很有必要。
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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BHA以上井段，用微單元力平衡分析法具躰分析鑽柱的受力，給出不同工況下水平井摩阻力計算的簡化條件。