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

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 limiting leakage from well head stuffing box...

Device for limiting the bending radius of a flexible duct

Device for limiting the range of movement of a travelling block

Device for making a hole in the ground

Device for making holes in ground by compaction

Device for making holes in soil