Master ball valve with integrated hanger

Mechanical connection system

Mechanical plug device

Mechanical plug device

Membrane liner for casing head of oil wells and the like and met

Metal protector for threaded extremities of well drilling tubes

Metal seal for wellheads

Metal-to-metal seal for oil well tubing string

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

Method and apparatus for centralized well treatment

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 injection of tubing into wells

Method and apparatus for mitigating environmental impact due...

Method and apparatus for on-site nitrate production for a...

Method and apparatus for positioning a safety valve sub for conn

Method and apparatus for removing casing

Method and apparatus for removing casing

Method and apparatus for treating down hole equipment from corro