A thixotropic fluid for well insulation

A thread joint and a male portion

A thread joint for a drill string for percussive rock-drilling

A thread joint, a male portion and a female portion

A tight threaded joint of oil field pipes

A tool for fluid filling and circulation during oilfield...

A tool for gripping a pipe or rod

A tool for transporting cutting means for in situ...

A top drive apparatus

A top drive apparatus for drilling a bore hole

A top drive well drilling apparatus

A top hammer rock-drilling tool, a drill rod and coupling...

A tractor for use in a bore

A tri-cone bit for high rpm drilling applications

A tube of fabric reinforced pvc

A tubing injector

A tubing plug

A tubular component provided with mutually oriented threaded...

A tubular handling system for drilling rigs

A tunnel cover for a tunnel for controlled ventilation of gas