Device for extracting at least one gas contained in a...

Device for extracting at least one type of gas contained in...

Device for fixing a valve to a tubular member

Device for floccing a mixture produced during oil or gas...

Device for flushing gas and oil bore holes of underground...

Device for fracturing a hydrocarbon producing formation

Device for frictional engagement with tubular goods

Device for generating high-speed pulsed liquid jets at high...

Device for guiding a drilling tool within a well and for...

Device for guying a movable cutting machine

Device for handling and racking riser pipes and drill pipes

Device for handling down-hole pipes

Device for hydraulic power supply of a rotary apparatus for...

Device for in situ extraction of a substance comprising...

Device for injection and stimulation of fluids in a well bore

Device for inserting a tool or an apparatus in a conduit for...

Device for inserting and centering associated screw- in pipes

Device for installation of a profile liner in a well

Device for joining two concrete members together

Device for limiting leakage from well head stuffing box...