Home >  Term: Kelly spinner
Kelly spinner

A pneumatically operated device mounted on top of the kelly that, when actuated, causes the kelly to turn or spin.

0 0

Penulis

  • Harry8L
  • (London, United Kingdom)

  •  (V.I.P) 574128 poin
  • 100% positive feedback
© 2024 CSOFT International, Ltd.