Injection system and method comprising an impactor motive...
Installation for cleaning the zone near the drill hole
Large compact cutter rotary drill bit utilizing directed hydraul
Lateral jet drilling system
Latex additive for water-based drilling fluids
Liquid-driven downhole hammer drill
Lost circulation additive, lost circulation treatment fluid made
Low friction face sealed reaction turbine rotors
Low shear treatment for the removal of free hydrocarbons,...
Low volume air-water drilling systems and methods
Method and a device for deep hole drilling
Method and an arrangement for controlling the supply of air into
Method and apparatus for a drill cutting injection system
Method and apparatus for a monodiameter wellbore,...
Method and apparatus for a monodiameter wellbore,...
Method and apparatus for a monodiameter wellbore,...
Method and apparatus for balancing discharge fluid flow in drill
Method and apparatus for cementing drill strings in place for on
Method and apparatus for collecting, defluidizing and...
Method and apparatus for continuously separating lost circulatin