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。
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。
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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