Reverse circulating tool

Reverse circulation down-the-hole drill

Rock drill

Rotating blowout preventor

Rotating coupling

Rotating deck bushing with dust guard system

Rotating diverter head

Rotating head for rotary drilling rigs

Rotating subsea diverter

Safety device for use on drilling rigs and process of running la

Selective apparatus and method for removing an undesirable cut f

Self positioning dust seal holder

Self-propelled saverdrill

Separation of evolved gases from drilling fluids in a...

Separation of evolved gases from drilling fluids in a...

Slurry diverter

Soil sampler

Solids strainer system for a hydraulic choke

Subsea mud pump and control system

Suction attachment for a drilling tool