Device for a curved conductor pipe for a pull wire

Device for a downhole apparatus for machining of casings and...

Device for adjusting the path azimuth of a rotary drilling tool

Device for an opening in an outer sleeve of a sleeve valve...

Device for analysing at least one gas contained in a liquid,...

Device for anchoring a drill string in a borehole

Device for anchoring a probe in a well by means of spreading...

Device for anchoring an oil well tubing string within an oil...

Device for annular well isolation

Device for application of dope on male threads

Device for appplying plugging mix to well walls

Device for borehole hydraulic mining

Device for boring

Device for boring holes in the ground

Device for building up down-pressure on well face during...

Device for burning holes into concrete, masonry, stone or metal

Device for changing bore crowns on a drill rod

Device for channeling solids and fluids within a reverse...

Device for charging drillholes

Device for cleaning widening and repairing of wells