THREADED JOINT FOR OIL COUNTRY TUBULAR GOODS

The prior art cannot suppress the plastic deformation of the whole pin distal end when a compressive load is applied, deteriorating durability of threaded joint. Provided is a premium threaded joint where a pin-side shoulder angle ¸1, a box-side shoulder angle ¸2, a seal interference quantity ´ and...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAI, Takamasa, CHIKATSUNE, Hiroshi, TAKANO, Jun, TAKAHASHI, Kazunari, UETA, Masateru, SATO, Hideo, SEKI, Haruhiko, YONEYAMA, Tsuyoshi, YOSHIKAWA, Masaki, NAGAHAMA, Takuya
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The prior art cannot suppress the plastic deformation of the whole pin distal end when a compressive load is applied, deteriorating durability of threaded joint. Provided is a premium threaded joint where a pin-side shoulder angle ¸1, a box-side shoulder angle ¸2, a seal interference quantity ´ and a seal point distance xp satisfy a relationship expressed by ¸2-¸1=±x´/xp, ±=7 to 14, and a pin distal end thickness tp1 which is defined by a difference Re-Ri between a radius Re of a pin most distal end portion and an inner radius Ri of a pin distal end portion is 0.25 times or more as large as a pin raw pipe thickness tp0.