Title:
SEALED THREADED JOINT FOR CASING PIPES (VERSIONS)
Document Type and Number:
WIPO Patent Application WO/2014/092605
Kind Code:
A3
Abstract:
The joint consists of the male (2) and female (1) elements with trapezoidal tapered threads (3) with 1:16 taper performed correspondingly on the external and internal surfaces of its ends. Load flank inclination angle (7) of the thread profile of the male and female elements is 2 - 4 °to the thread axes normal line and lead- in flank inclination angle (6) of the thread profile is 9 - 11° to the thread axes normal line. The joint is performed with inner sealing unit (4), formed by intercontacting bearing end surfaces (5) located perpendicularly to the thread axis line. The bearing end length (L) of the male element is 6,9 - 100,3 mm. High sealability of the joint under sufficient multidirectional loads applied is preserved as well as high durability of the joint, of its improved make-up features, internal casing pipes string flushness.
Inventors:
REKIN SERGEY ALEXANDROVICH (RU)
SCHERBAKOV BORIS URIEVICH (RU)
EMELIANOV YURY FEDOROVICH (RU)
ALDONIN VLADIMIR PETROVICH (RU)
SIDORENKO PAVEL NIKOLAEVICH (RU)
NIKIFOROV DENIS VIKTOROVICH (RU)
SCHERBAKOV BORIS URIEVICH (RU)
EMELIANOV YURY FEDOROVICH (RU)
ALDONIN VLADIMIR PETROVICH (RU)
SIDORENKO PAVEL NIKOLAEVICH (RU)
NIKIFOROV DENIS VIKTOROVICH (RU)
Application Number:
PCT/RU2013/001085
Publication Date:
August 07, 2014
Filing Date:
December 03, 2013
Export Citation:
Assignee:
TMK PREMIUM SERVICES LLC (RU)
International Classes:
E21B17/042; F16L15/00
Domestic Patent References:
| WO2012003645A1 | 2012-01-12 | |||
| WO2012002409A1 | 2012-01-05 | |||
| WO2012118167A1 | 2012-09-07 |
Download PDF:
Previous Patent: METHOD FOR PRODUCING MONOETHANOLAMINE SALTS OF PHOSPHONIC ACIDS
Next Patent: ELECTROSTATIC LOCK
Next Patent: ELECTROSTATIC LOCK