THREADED CONNECTION AND PROCESS FOR OBTAINING IT
    2.
    发明公开
    THREADED CONNECTION AND PROCESS FOR OBTAINING IT 有权
    螺纹连接和方法收据

    公开(公告)号:EP2583011A1

    公开(公告)日:2013-04-24

    申请号:EP11723273.6

    申请日:2011-06-01

    IPC分类号: F16L15/00

    摘要: A female component for a tubular hydrocarbon working string subjected to dynamic bending strength includes a tapered female threading cooperating with a male threading to form a rigid mutual connection of tubular elements, a free end and female sealing surface disposed between the free end and the female threading, the female sealing surface to contact in a made up condition with a male sealing surface to form a metal-metal seal, and an annular groove provided between the free end and the female sealing surface, leaving an axial distance greater than zero between the free end and a transition region outwardly of the female sealing surface, and a radial distance greater than zero between the female sealing surface and a chamfer at the free end, the groove including borders formed by the chamfer and a portion of the transition region protecting the female sealing surface prior to makeup.

    ULTRASONIC TESTING METHOD OF THREADED JOINT OF PIPES OR TUBES
    8.
    发明公开
    ULTRASONIC TESTING METHOD OF THREADED JOINT OF PIPES OR TUBES 审中-公开
    超声测试程序管件的连接螺纹

    公开(公告)号:EP2064540A1

    公开(公告)日:2009-06-03

    申请号:EP07828371.0

    申请日:2007-09-14

    IPC分类号: G01N29/04 F16L15/04

    摘要: There is provided a method for detecting an abnormal portion (defect, non-adhering portion, and seized portion) lying at a contact region between each part of a pin and each part of a box forming a threaded joint to be used as a joint of pipe or tubes such as OCTG. This invention provides an ultrasonic testing method of a threaded joint of pipes or tubes including a pin having an external thread part, a metal seal part, and a shoulder part on an outer peripheral surface, and a box having an internal thread part, a metal seal part, and a shoulder part corresponding to each part of the pin on an inner peripheral surface and being fastened with the pin by way of a lubricant. The method according to the present invention comprising the steps of: transmitting and receiving ultrasonic waves to and from a plurality of locations along an axial direction of the threaded joint in at least one of the internal thread part, the metal seal part, and the shoulder part of the box; detecting echo intensities and reception times of echoes for the plurality of locations; and detecting an abnormal portion in the threaded joint based on axial directional distribution of the echo intensities and axial directional distribution of reception times of the echoes.