Derrick mounted apparatus for the manipulation of pipe

Device for channeling solids and fluids within a reverse...

Device for drilling a bore hole in the ground

Device for handling and racking riser pipes and drill pipes

Device in impact machines

Directional drilling system

Directional drilling tool

Double acting hydraulic jar

Double acting hydraulic mechanism

Double acting jar

Double acting mechanical jar

Double piston in-the-hole hydraulic hammer drill

Double-acting accelerator for use with hydraulic drilling jars

Down hole drills using spent driving fluid for flushing purposes

Down hole drills using spent driving fluid for flushing purposes

Down hole hammer

Down-hole hammer

Down-the-hole drill assembly

Down-the-hole drilling machine

Down-the-hole hammer and components for a down-the-hole...