Metal protector for threaded extremities of well drilling tubes

Method and a device for hauling a casing or the like up from a b

Method and apparatus for connecting tubulars using a top drive

Method and apparatus for connecting tubulars using a top drive

Method and apparatus for controlling the ascent and descent...

Method and apparatus for positioning a safety valve sub for conn

Method and assembly for casing handling using a kelly rig

Method and device at rock drilling

Method of running a pipe string having an outer diameter...

Method of running a pipe string having an outer diameter...

Methods and apparatus for connecting tubulars using a top drive

Methods and apparatus for severing nested strings of tubulars

Mouse hole support unit with rotatable or stationary operation