Threaded joint for tubes

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/042 (2006.01) E21B 17/043 (2006.01) F16L 15/04 (2006.01) F16L 15/08 (2006.01)

Patent

CA 2256553

The invention concerns a tubular threaded joint provided with a device for preventing over-screwing and unscrewing, comprising a male component (3) with an external thread (8) and a female component (2) with an internal thread, these two components capable of being assembled according to a predetermined tightening torque. A female portion (7) arranged beyond the female thread (19) and a male portion (13) arranged beyond the male thread (12) provide between their internal (14) and external (15) surfaces a ring-shaped zone whereof a part at least form a gauged zone (20) wherein an adhesive provides mechanical bonding between the female portion (7) and the male portion (13). The joint is useful particularly in the oil and gas industry.

L'invention est relative 8 un joint fileté tubulaire muni d'un dispositif contre le survissage ou le dévissage. Le joint comporte un composant mâle (3) avec un filetage extérieur (8) et un composant femelle (2) avec filetage intérieur (6) ces deux composante pouvant être assemblés selon un couple de serrage déterminé. Une portion femelle (T) disposée au-delà du filetage femelle (19) et une portion mâle (13) disposée au-delà du filetage mâle (12) ménagent entre leurs surfaces intérieure (14) et extérieure (15) une zone annulaire dont une partie au moins forme une zone calibrée (20) dans laquelle une colle assure une liaison mécanique entre la portion femelle (T) et la portion mâle (13). Uilisation du joint notamment pour l'industrie du pétrole et du gaz.

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