Patent ID: 9273521
Filing Date: 2016-03-01
CPC Classification: E21B,F16L

Claim Text:
1. A threaded connection, comprising: a first and a second tubular component, the first tubular component comprising a male end comprising a distal surface and a threaded zone disposed on an external peripheral surface of the male end, the second tubular component comprising a female end comprising a distal surface and a threaded zone disposed on an internal peripheral surface of the female end, 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 including a width which increases from the respective distal surface of the male and female ends, the threads comprising load flanks including negative angles over at least a portion of a radial dimension of the load flanks, and stabbing flanks, with a radial clearance subsisting in a connected state of at least one between crests of the male threads and roots of the female threads and between crests of the female threads and roots of the male threads, with an axial clearance subsisting in the connected state between the stabbing flanks of the male and female threads, the distal surface of at least one of the male end and the female end being brought into axial abutting contact against a corresponding abutment surface, the stabbing flanks being at an angle in a range 1° to 15°, and the female end comprising a substantially tapered surface and a recess between the threaded zone of the female end and an abutment surface of the female end, the recess including a substantially cylindrical surface and a surface of revolution disposed between the threaded zone of the female end and the substantially tapered surface, the substantially tapered surface being adjacent to the abutment surface of the female end.