Abstract: A tubular joint in which radial expansion caused by the passage of an expander, inclined shoulder fittings formed respectively on a peripheral surface of the female element facing radially inwards and on a peripheral surface of the male element facing radially outwards, are subjected to a relative axial displacement towards each other to be urged into sealed mutual contact with radial interference. The tubular joint is, for example, useful in hydrocarbon wells.

Abstract: A tubular joint in which radial expansion caused by the passage of an expander, inclined shoulder fittings formed respectively on a peripheral surface of the female element facing radially inwards and on a peripheral surface of the male element facing radially outwards, are subjected to a relative axial displacement towards each other to be urged into sealed mutual contact with radial interference. The tubular joint is, for example, useful in hydrocarbon wells.

Abstract: A tubular joint in which radial expansion caused by the passage of an expander, inclined shoulder fittings formed respectively on a peripheral surface of the female element facing radially inwards and on a peripheral surface of the male element facing radially outwards, are subjected to a relative axial displacement towards each other to be urged into sealed mutual contact with radial interference. The tubular joint is, for example, useful in hydrocarbon wells.

Abstract: The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element (11) and a second, female tubular element (12) made up together by screwing. One of the tubular elements (11; 12) has a non-threaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealing-tight contact with the opposite surface (41; 8) of the other element after screwing together, diametric expansion, and then generation of springback forces of the first and second tubular elements. The joint has a tubular sleeve (34; 36) threaded over the second element (12) before screwing together and positioned to extend axially substantially opposite to the lip (3; 5) and, after diametric expansion, generating a springback force which is added to that of the second element in order to counteract the springback force of the first element, thus effecting at least the shrink-fitting of the tubular sleeve over the second element.

Abstract: A tubular joint in which radial expansion caused by the passage of an expander, inclined shoulder fittings formed respectively on a peripheral surface of the female element facing radially inwards and on a peripheral surface of the male element facing radially outwards, are subjected to a relative axial displacement towards each other to be urged into sealed mutual contact with radial interference. The tubular joint is, for example, useful in hydrocarbon wells.

Abstract: The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element (11) and a second, female tubular element (12) made up together by screwing. One of the tubular elements (11; 12) has a non-threaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealing-tight contact with the opposite surface (41; 8) of the other element after screwing together, diametric expansion, and then generation of springback forces of the first and second tubular elements. The joint has a tubular sleeve (34; 36) threaded over the second element (12) before screwing together and positioned to extend axially substantially opposite to the lip (3; 5) and, after diametric expansion, generating a springback force which is added to that of the second element in order to counteract the springback force of the first element, thus effecting at least the shrink-fitting of the tubular sleeve over the second element.