Patent ID: 9109726
Filing Date: 2015-08-18
Classification: E21B,F16L

Abstract:
1. A set for obtaining a threaded connection used in hydrocarbon wells, comprising: a first tubular component comprising one end provided on its external circumferential surface with at least two threaded zones of identical lead; a second tubular component provided on its internal circumferential surface with at least two threaded zones; a third tubular component comprising one end provided on its internal circumferential surface with at least one threaded zone and provided on its external circumferential surface with at least one threaded zone, wherein the threaded zone provided on the internal circumferential surface of the end of the third component is configured to cooperate by makeup with one of the two threaded zones of the end of the first component, the threaded zone provided on the external circumferential surface of the end of the third component is configured to cooperate by makeup with one of the two threaded zones of the second component, the second and third components further comprising means for defining the end of makeup of said threaded zones, and the other threaded zone provided on the end of the first component is configured to cooperate by makeup with the other threaded zone provided on the second component, in which the threaded zones of the tubular components are located on tapered envelopes with an angle of taper in the range 0.5 to 4 degrees.