Patent ID: 8678448
Filing Date: 2014-03-25
Classification: E21B,F16L

Abstract:
1. A threaded connection used in exploration and operation of hydrocarbon wells, comprising: a first and a second tubular component, the first component comprising a male end comprising a threaded zone disposed on its external peripheral surface, the second component comprising a female end comprising a threaded zone disposed on its internal peripheral surface, the threaded zone of the male end being threaded up into the threaded zone of the female end, the threaded zones comprising respective male and female threads, the threads comprising a root, a crest, a stabbing flank, and a load flank, a groove being provided in the load flank of the threaded zone of the female end and/or the male end respectively, adjacent to the root, and a boss being provided which projects axially from the load flank of the threaded zone of the male end and/or respectively from the female end adjacent to the crest, the boss comprising a convex surface and a concave surface, the boss being housed in the groove with, in a connected state, a radial clearance subsisting between the concave surface and the groove and an axial clearance subsisting between the end of the boss and the bottom of the groove.