Patent ID: 9605781
Date: 2017-03-28
CPC Classifications: E21B,F16L,Y10T

Claim:
1. A ready-to-use threaded tubular connection to constitute casing strings or tubing strings for hydrocarbon wells, risers or drill strings for those same wells, comprising: a female threaded portion at an end of a first tubular component and a male threaded portion at an end of a second tubular component, the female threaded portion comprising a female thread, at least one female sealing surface on its inner peripheral surface, and at least one female axial abutment surface, the male threaded portion comprising a male thread, at least one male sealing surface on its outer peripheral surface, at least one male axial abutment surface, and a lip provided between the male thread and a male axial abutment surface located at a free end of the threaded portion which is distant from the thread, the male sealing surface being located on the lip adjacent to the thread, the male thread being made up into the female thread such that the male axial abutment surface is in contact with the female axial abutment surface, the male sealing surface being in interference contact with the corresponding female sealing surface, in order to form a metal-to-metal seal, a distal portion of the lip between the male sealing surface and the male axial abutment surface being radially distant from a corresponding surface of the female threaded portion, wherein at least one leak channel, being substantially radial, is provided in one of the male or female threaded portions, the at least one leak channel placing an interior chamber, which is formed by both a surface of the distal portion of the lip that extends from the male sealing surface to the male axial abutment surface and by the corresponding surface of the female threaded portion that extends from the female sealing surface to the female axial abutment surface, in communication with the interior chamber of the connection when the male axial abutment surface is in contact with the female axial abutment surface, and wherein the at least one leak channel is offset from both of the axial abutment surfaces.