Rotary Equipment
Kelly Bushings
A Kelly Bushing is an adaptor that connects the rotary table to the Kelly. It transfers the rotary motion to the Kelly which turns the entire drill string. Depth measurements are commonly referenced to the KB, i.e.. 8327 ft KB, meaning 8327 feet below the kelly bushing.

Rig Service offers two types of Kelly Bushings:
  • Square Drive Kelly Bushings up to 3 1/2" IF. 
  • Octagon Kelly Bushing up to 3 1/2" IF. 
Please call for more information and availability.