F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 15/00 (2006.01) F16L 15/06 (2006.01) E21B 17/042 (2006.01)
Patent
CA 2289097
An ultra high torque double shoulder tool joint for maximizing the torsional strength of a threaded connection by correlating a transverse cross-sectional counter-bore area of the box (12) and pin (10). The pin (10) includes a base section (74) and a nose section (24). The nose section (24) defines a cross-sectional nose area (28). The pin external threads (22) include a taper no greater than 1/12. The box (12) include a cross-sectional counterbore area (46) and a cross-sectional box area (52). The overall strength of the tool joint is dependent upon the torsional strength of the threaded connection, the cross-sectional nose area (28) and the cross-sectional counter-bore area (46).
La présente invention concerne un raccord de tiges à épaulement double de couple ultra élevé (voir figure 1) qui permet de maximiser la résistance à la torsion d'un raccord fileté en mettant en corrélation une section transversale de contre-alésage de la boîte (12) et la clavette (10). La clavette (10) comprend une partie base (74) et une partie pointe (24). La partie pointe (24) définit une zone antérieure transversale (28). Le filetage (22) externe de la clavette présente une conicité maximale de 1/12. La boîtier (12) comprend une zone de contre-alésage transversale (46) et une zone de boîte transversale (52). La résistance totale du raccord de tiges dépend de la résistance à la torsion du raccord fileté, de la zone antérieure transversale (28) et de la zone de contre-alésage transversale (36).
Smith Jackie E.
Wilson Gerald E.
Winship Thomas E.
Gowling Lafleur Henderson Llp
Grant Prideco Inc.
Grant Prideco L.p.
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