Home >  Term: rotary
rotary

the machine used to impart rotational power to the drill stem while permitting vertical movement of the pipe for rotary drilling. Modern rotary machines have a special component, the rotary or master bushing, to turn the kelly bushing, which permits vertical movement of the kelly while the stem is turning.

0 0

Penulis

  • Stepan
  •  (Silver) 770 poin
  • 100% positive feedback
© 2024 CSOFT International, Ltd.