Set for obtaining a threaded connection, method for making up and breaking out said connection, and use of said connection in a riser

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.

2. The set for obtaining a threaded connection according to claim 1 , in which the lead of the threaded zone provided on the external circumferential surface of the end of the third component is greater by at least 10% than the lead of the threaded zone provided on the internal circumferential surface of the end of the third component.

3. The set for obtaining a threaded connection according to claim 2 , in which the lead of the threaded zone provided on the external circumferential surface of the end of the third component is substantially equal to twice the lead of the threaded zone provided on the internal circumferential surface of the end of the third component.

4. The set for obtaining a threaded connection according to claim 1 , in which the threaded zone provided on the external circumferential surface of the end of the third component and the threaded zone provided on the internal circumferential surface of the end of the third component are in opposite directions.

5. The set for obtaining a threaded connection according to claim 1 , in which the means for defining the end of makeup between the threaded zone provided on the external circumferential surface of the end of the third component and the corresponding threaded zone of the second component are abutment surfaces respectively provided on the terminal surface of the end of the third component and on a surface formed by a shoulder on the second component.

6. The set for obtaining a threaded connection according to claim 5 , in which the end of the first component comprises, on its terminal surface, a sealing surface which is configured to cooperate by tightening with a corresponding sealing surface provided on a surface formed by a shoulder on the second component.

7. The set for obtaining a threaded connection according to claim 1 , in which the end of the first component comprises, on its terminal surface, an abutment surface which is configured to cooperate in abutment with a corresponding abutment surface provided on a surface formed by a shoulder on the second component.

8. The set for obtaining a threaded connection according to claim 1 , in which the means for defining the end of makeup between the threaded zone provided on the external circumferential surface of the end of the third component and the corresponding threaded zone of the second component are constituted by said threaded zones being mutually self-locking.

9. The set for obtaining a threaded connection according to claim 1 , in which the threaded zones provided on the end of the first component are located on the same tapered envelope so as to form a single continuous threading.

10. A method for obtaining a threaded connection used in hydrocarbon wells, comprising:

providing a set for obtaining a threaded connection in accordance with claim 1 ;

making up the threaded zone provided on the external circumferential surface of the end of the third component into the corresponding threaded zone provided on the end of the second component, until the end of makeup is achieved; and

making up the two threaded zones provided on the external circumferential surface of the end of the first tubular component into the corresponding threaded zones which are respectively provided on the internal circumferential surfaces of the second and third components.

11. The method for obtaining a threaded connection according to claim 10 , wherein, after the making up the two threaded zones, a breakout torque C0 is applied between the second and the third tubular components.

12. A connection obtained according to claim 11 , in which the first and third tubular components are greater in length than the second tubular component, the second tubular component being a coupling.

13. A connection obtained according to claim 11 , in which the first tubular component is greater in length than both the second and third tubular components, the second and third tubular components being couplings.

14. A double connection constituted by two connections obtained according to claim 13 , wherein the third components form one and the same tubular component.

15. A threaded connection obtained according to claim 11 , configured for use in a riser.

16. A method for breaking out a threaded connection obtained according to claim 11 , comprising:

applying a makeup torque C0 between the second and the third tubular components;

breaking out the two threaded zones provided on the external circumferential surface of the first end of the tubular component from their corresponding threaded zones; and

breaking out the threaded zone provided on the external circumferential surface of the third end from the threaded zone.

17. 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,

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 means for defining the end of makeup between the threaded zone provided on the external circumferential surface of the end of the third component and the corresponding threaded zone of the second component are abutment surfaces respectively provided on the terminal surface of the end of the third component and on a surface formed by a shoulder on the second component, and

in which the end of the first component comprises, on its terminal surface, a sealing surface which is configured to cooperate by tightening with a corresponding sealing surface provided on a surface formed by a shoulder on the second component.

18. 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,

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, and

in which the end of the first component comprises, on its terminal surface, an abutment surface which is configured to cooperate in abutment with a corresponding abutment surface provided on a surface formed by a shoulder on the second component.