drill collar meaning in English
防偏钻杆
钻挺
钻头钻油台
钻铤
Examples
- Please measure drilling collar first , then drilling pipe
先量钻铤，再量钻杆。 - Connect the feeling plate to the drill collars
用钻铤连接探深板。 - We need a short drill collar
需要一根短钻铤 - Spiral drill collars made in our plant are in accordance with api standard
本厂制造的螺旋钻铤按照“ api ”标准生产和验收。