...;三维有限元计算;钻杆接头;接头参数 [gap=951]Key Words:ANSYS software; 3D finite element calculation; drill pipe joint; joint parameter ...
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Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
给大钳装上与钻杆接头或钻铤相匹配的钳头,再装上安全锁簧。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
When picking up drill pipe, visually check each joint of pipe picked up to be sure it is in proper sequence according to weight, grade and class as designed.
串接钻具时,要按照设计逐根检查,以便确认每个单根的重量、钢级和下井顺序正确无误。
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