Apparatus for making-up and breaking threaded pipe connections
AssigneeChristensen, Inc.
InventorsRainer Jurgens, Alfred Ostertag
Life of this patent
Estimating the term…
Abstract
An apparatus for making-up and breaking a threaded connection between threaded tubular members, including a turnable chuck and a non-turnable chuck, each of which can be releasably clamped around its companion threaded tubular member, rotation of the turnable chuck in one direction making up the threaded connection, whereas rotation of the turnable chuck in the opposite direction breaking the threaded connection.
Claims18
Apparatus for the making-up and breaking of thread connections between tubular bodies and between drill strings and drilling tools for well bore drilling, comprising a supporting structure, a stationary bearing rack supported on said structure, a turnable fluid operated chuck seated on said bearing structure, a supporting rack mounted on said supporting structure for movement therealong towards and away from said bearing rack, a non-turnable fluid operated chuck mounted on said supporting rack in alignment with said turntable chuck to define a main axis therewith, said racks having coaxial openings through which the threaded tubular bodies can extend, a fluid operated torque producer for turning the turnable chuck relative to the non-turnable chuck during clamping engagement between the chucks and threaded tubular bodies therein, said supporting structure being formed by an elongated distortion-free unitary support beam disposed parallel to said main axis and defining the path of movement of said supporting rack, said stationary bearing rack and supporting rack being mounted between the end portions of said support beam and on the exterior of said unitary support beam to be supported thereby.
Apparatus for the making-up and breaking of thread connections between tubular bodies and between drill strings and drilling tools for well bore drilling, comprising a supporting structure, a stationary bearing rack supported on said structure, a turnable fluid operated chuck seated on said bearing structure, a supporting rack mounted on said supporting structure for movement therealong towards and away from said bearing rack, a non-turnable fluid operated chuck mounted on said structure in alignment with said turnable chuck to define a main axis therewith, a fluid operated torque producer for turning the turnable chuck relative to the non-turnable chuck during clamping engagement between the chucks and threaded tubular bodies therein, said supporting structure being formed by an elongated distortion-free support beam disposed parallel to said main axis and defining the path of movement of said supporting rack, an adjustable centering support for a tubular body adjacent to the side of said supporting rack facing away from said bearing rack, and an adjustable centering support for a tubular body adjacent to the side of said bearing rack facing away from said supporting rack, each centering support comprising a frame and a pair of juxtaposed support rollers on said frame disposed in a transverse plane symmetrical to said main axis, and means for vertically adjusting said centering supports.
Dependencies are inferred from the claim text.