THREADED TUBULAR CONNECTION WHICH IS RESISTANT TO

专利名称：THREADED TUBULAR CONNECTION WHICH

IS RESISTANT TO BENDING STRESSES

发明人：ROUSSIE, Gabriel,MASSAGLIA, Jacky申请号：EP05716320.6申请日：20050322公开号：EP1728018B1公开日：20090916

摘要：A threaded tubular connection comprises a male tubular element comprising amale threaded portion and a female tubular element comprising a female threadedportion which cooperates by screwing with the male threaded portion. In accordance withthe invention, the threaded connection comprises at least one transfer zone which cantransfer bending loads between said elements and which is axially spaced from saidthreaded portions, in which the male and female elements have an undulating surfaceand a smooth surface facing each other, the undulating surface (5) defining a series ofrounded annular ribs (7) which come into contact with the smooth surface with a radialinterference fit. Application to production strings for hydrocarbon wells.

申请人：VALLOUREC MANNESMANN OIL & GAS,SUMITOMO METAL IND

地址：FR,JP

国籍：FR,JP

代理机构：Plaçais, Jean Yves

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