drill collar
钻杆颈：钻井中钻柱中钻头上方的重型管道。
常用释义
英式发音
美式发音
基本释义
- 钻杆颈：钻井中钻柱中钻头上方的重型管道。
例句
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1·We need a short drill collar.需要一根短钻铤。
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2·We need a short drill collar to put here.这里要接一根短钻铤。
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3·In the event failures of boring tools, the fatigue failure of the drill collar is especially prominent.在钻具失效事故中，钻铤的疲劳失效尤为突出。
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4·As such, magnetic particle inspection for the screw thread of the drill collar is very necessary and important.因而钻铤内外螺纹的磁粉检测十分必要和重要。
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5·A log similar to a dual induction log but made by an electromagnetic propagation tool built into a drill collar.与双感应测井类似的一种测井方法，用安装在钻铤中的电磁传播仪进行测量。
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6·When picking up or setting down drill collar stands larger than 6 1/4" on the floor board, always snub with the air tugger."当在钻杆盒上提起或放置直径大于6 1／4〞的钻铤立柱时，一定要用气动绞车拉住以保安全。
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7·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。
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8·Do not make up or break out the bit on a single joint of DC. If this is absolutely necessary, always snub drill collar with the air tugger.不要在一单根钻铤上卸钻头，如果确实需要这样做，要用气动绞车拉住钻铤。
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9·Because its rigidity are less than the drill collar, less contact area with wall of a well, is also not easy to form differential pressure sticking.由于其刚性比钻铤少，和井壁接触面积小，也不容易形成压差卡钻。
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10·After processing LET thread, stress groove and double shoulder connection for the NC35 thread of Drill Collar in 43/4 inch, torsion tests were done.4英寸）钻铤NC35螺纹加工LE螺纹、应力槽、双台肩后进行了实物抗扭性能试验，证实双台肩钻铤具有很好的抗扭性能。