A quick removal cylinder set for a twin cylinder isolation...
A radial spring latch apparatus and methods for making and...
A ram actuator for a blowout preventer
A reamer assembly
A reciprocable impact hammer
A regulating device and methods of using same
A regulator of angle and reactive moment of a gerotor type...
A removable guide member for guiding drill string components...
A retrievable bridge plug
A retrievable downhole packer assembly
A rig for wellbore operations
A riser
A riser connector
A riser device
A rock drill bit and a thread joint
A rock drill bit and cutting inserts
A rock drill bit and cutting inserts
A rock drill bit assembly
A rock drilling apparatus
A rock-drilling tool, a drill rod and a coupling sleeve