Non-threaded expandable pipe connection system

Details Non-threaded expandable pipe connection system Non-threaded expandable pipe connection system

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 17/04 (2006.01)

Patent

CA 2549527

A method for connecting tubular elements (37, 40), particularly pipe for strings to be used in oil and gas wells, comprises: (A) locating a portion of a first tubular element (37) within a portion of a second tubular element (40), (B) expanding the portion of the first tubular element and/or compressing the portion of the second tubular element to form a connection resulting from the interference between the external surface of the portion of the first tubular element and the internal surface of the portion of the second tubular element, in which, prior to assembly, one or both of the external surface of the portion of the first tubular element and. the internal surface of the portion of the second tubular element is/are at least partially coated by plasma spraying with hard angular material. Preferably, protuberances (38) of plasma-sprayed hard angular material are formed on at least one of the mating surfaces of the connection.

L'invention concerne un procédé pour raccorder des éléments tubulaires (37, 40), en particulier des conduites pour des trains de tiges destinés à être utilisés dans des puits de pétrole et de gaz. Ce procédé comprend les étapes consistant : (A) à localiser une partie d'un premier élément tubulaire (37) dans une partie d'un deuxième élément tubulaire (40) ; (B) à étendre la partie du premier élément tubulaire et/ou comprimer la partie du deuxième élément tubulaire, pour former un raccord qui résulte de l'interférence entre la surface externe de la partie du premier élément tubulaire et la surface interne de la partie du deuxième élément tubulaire. Selon l'invention, avant l'assemblage, ladite surface externe ou ladite surface interne ou ces deux surfaces est/sont au moins partiellement recouverte(s) par projection au plasma à l'aide d'un matériau angulaire dur. De préférences, des structures saillantes (38) de matériau angulaire dur projeté au plasma sont formées sur au moins une des surfaces d'accouplement du raccord.

Affiliated with

Also associated with

Rating

Non-threaded expandable pipe connection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-threaded expandable pipe connection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-threaded expandable pipe connection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2051776