National Oilwell Varco, L.p.

Varco I/p, Inc.

Other

Thomas Kilpatrick McLaughlin

Joseph K Mudge

Ronald Whyte

A coupling assembly includes a coupling, a protective ring and two tubulars, the coupling of generally cylindrical shape with a channel therethrough, the coupling having at least one internal thread and two coupling ends and a pin end of at least one of the two tubulars having an external thread for threaded mating therewith so that the coupling assembly provides a connection between the two tubulars, the protective ring including a ring body for positioning adjacent an interior wall of the coupling between the two ends thereof, the ring body being generally cylindrical and having a ring channel therethrough, the protective ring includes one of a tongue and groove and at least one of the ends of at least one of the two tubulars having the other of a tongue and groove.

Coupling assembly and protective ring therefor

A connection includes first and second lined tubular members having a coincident bore and a protective ring. The first lined tubular member has a pin end and the second lined tubular member has a box end. Each lined tubular member includes a tubular body, an annular liner, and a mortar filled annulus therebetween. The mortar filled annulus has an annular recess therein at at least one of the pin end and box end for receiving a part of the protective ring. The part received may be a flange on the ring.

Connection and protective ring therefor

A tubular coupling system and method; the system and method in at least certain aspects, using a coupling member with an interior protective ring that has at least one inner energizing member which, upon compression, forces the body of the coupling member against an interior wall of the coupling thereby inhibiting corrosive material from contacting the coupling's interior wall or, in the event some corrosive material does enter this area, holding the interior protective ring against the coupling's interior wall so that the corrosive material remains in and does not exit this area, thus inhibiting or preventing a continuous flow of corrosive material.

Pipe coupling system and method

Pipe coupling system

An apparatus for swaging an end of a tubular ( ) is described as comprising a swaging head ( ) for providing the swage to the end of the tubular ( ). The swaging head ( ) has two or more formations ( A, B) provided thereon to permit swaging of differing diameters of tubular ends. The apparatus may comprise a stop plate ( ) for abutment against the other end of a tubular ( ) where the swaging head ( ) and the stop plate ( ) are movably coupled to one another. The apparatus may have a clamping device ( ) for clamping the tubular ( ), where the clamping device is split into at least three part-circular clamping segments ( ) which clamp around the outer circumference of the tubular to permit it to be swaged. The clamping device ( ) may have a plurality of teeth ( ) for gripping the outer surface of the tubular ( ), and a plurality of grooves 36 formed between the teeth ( ). The gripping surface of each tooth ( ) is substantially parallel to the longitudinal axis of the tubular ( ) to be gripped.

Growing community of inventors

Aberdeenshire, United Kingdom

Thomas Kilpatrick McLaughlin