Threaded connection

Abstract

A threaded tubular connection comprises a male threaded element disposed at the end of a first tubular component and a female threaded element disposed at the end of a second tubular component, the male threaded element comprising two male threadings, an outer and an inner, a first outer peripheral surface disposed between the male threadings, a first male sealing surface on said outer peripheral surface, a second outer peripheral surface, a male axial abutment surface disposed at the end of the male threaded element, and a second male sealing surface provided on the second outer peripheral surface of the male threaded element between the inner threading and the male axial abutment surface, the female threaded element comprising two female threadings, an outer and an inner, an inner peripheral surface disposed between the female threadings, at least one first female sealing surface on said inner peripheral surface, a female axial abutment surface, and a second female sealing surface provided between the female axial abutment surface and the inner female threading, the threads of said male and female outer threadings being engaged in the coupled state, the threads of said male and female inner threadings being engaged in the coupled state, the male axial abutment surface and the female axial abutment surface being abutted and engaged in the coupled state, the first male sealing surface and the first female sealing surface being in sealing contact in the coupled state, the second male sealing surface and the second female sealing surface being in sealing contact in the coupled state.

Description

technical field [0001] The present invention relates to the field of sealing connections of threaded tubular components, in particular for drilling or operating oil and gas wells. While drilling or operating, the connections are subjected to large compressive and tensile loads and must be prevented from separating. Connections are subjected to axial tension or compression, internal or external fluid pressure, bending or torsion, which can be combined and whose strength can fluctuate. Sealing must be ensured regardless of loads and harsh field conditions. Threaded connections can be tightened and loosened several times without reducing their performance (in particular due to wear). After disassembly, the tubular part can be reused under other conditions of use. Background technique [0002] When tensioned, jump-out phenomena can occur and propagate from one thread to the other, leading to the risk of separation of the connection. High internal pressure promotes this pheno...

AI Technical Summary

Problems solved by technology

[0002] When tensioned, a jump-out can occur and propagate from one thread to the other, risking separation of the joint

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