Device for protecting wells from corrosion or deposits...

Device for quenching open air fires

Device for rapidly connecting rods, tubes and casings,...

Device for reciprocating motion of a rotating drilling body...

Device for removal and filtration of drilling fluid

Device for removing paraffin and other deposits from the...

Device for repetitively connecting and separating an...

Device for rotating a pipe

Device for routing a body through a fluid filled pipeline

Device for sealing a bore hole and discharging drill...

Device for separating and collecting fluid in gas from a...

Device for separating free gas mixed with a liquid at the...

Device for setting the direction and/or the inclination of...

Device for simultaneous measurement of drilling fluid...

Device for simultaneously boring a well and inserting a...

Device for simultaneously casing a hole while drilling

Device for steering a drill bit

Device for steering drilling tools

Device for steering the foremost part of a drill pipe

Device for sticking drains into the ground