RISER PIPE SECTION WITH FLANGED AUXILIARY LINES AND BAYONET CONNECTIONS

• US 20100319925A1
• Filed: 12/01/2008
• Published: 12/23/2010
• Est. Priority Date: 12/18/2007
• Status: Active Grant

• Current Assignee: IFP Energies Nouvelles
• Original Assignee: IFP Energies Nouvelles
• Inventors: Papon, Gérard, Persent, Emmanuel
• Granted Patent: US 8,881,830 B2
• Time in Patent Office: Days
• US Class Current: 166/345
• CPC Class Codes: E21B 17/0853 Connections between sections of riser provided with auxiliary lines, e.g. kill and choke lines

Abstract

A riser pipe section (4) is disclose for offshore well drilling operations comprising a main tube element (6) having as an extension a male connector element (10) and a female connector element (9) comprising a first series of tenons. At least one auxiliary tube element (7) is secured to the male connector element (10) and to the female connector element (9) so that the main tube element (6) and the auxiliary tube element (7) jointly transmit tensile stresses between the male connector element (10) and the female connector element (9). A locking ring is mounted on the male connector element and the ring comprises a second series of tenons.

Claims

1-11. -11. (canceled)

12. A riser pipe section for offshore well drilling operations, comprising a main tube element including an extension with a male connector element and a female connector element comprising:

first tenons, at least one auxiliary tube element secured to the male connector element and to the female connector element so that the main tube and the at least one auxiliary tube element jointly transmits tensile stresses between the male connector element and the female connector element, and wherein a locking ring is mounted on male connector element, with the locking ring comprising second tenons interacting with the first tenons for locking the female and male connector elements together.

14. A riser pipe section as claimed in claim 12, wherein the locking ring is housed in a slot disposed on an outer surface of the male connector element.

16. A riser pipe section as claimed in claim 14, wherein the male connector element comprises a tubular part forming an extension of the main tube element and an annular part mounted on the tubular part, with the locking ring being mounted on the tubular part and locked in translation between the tubular part and annular part.

18. A riser pipe section as claimed in claim 14, wherein the male connector element comprises a first part including an extension of the main tube element and a second tubular part mounted on the first part, the locking ring being mounted on the second tubular part and locked in translation between the first part and the second tubular part.

20. A riser pipe section as claimed in claim 12, wherein the male connector element includes a first shoulder extending outwardly relative to the main tube element and the female connector element includes a second shoulder extending outwardly relative to the main tube element and the at least one auxiliary tube element is mounted axially abutted against the first shoulder and against the second shoulder.

22. A riser pipe section as claimed in claim 14, wherein the male connector element includes a first shoulder extending outwardly relative to the main tube element and the female connector element includes a second shoulder extending outwardly relative to the main tube element and the at least one auxiliary tube element is mounted axially abutted against the first shoulder and against the second shoulder.

24. A riser pipe section as claimed in claim 16, wherein the male connector element includes a first shoulder extending outwardly relative to the main tube element and the female connector element includes a second shoulder extending outwardly relative to the main tube element and the at least one auxiliary tube element is mounted axially abutted against the first shoulder and against the second shoulder.

26. A riser pipe section as claimed in claim 18, wherein the male connector element includes a first shoulder extending outwardly relative to the main tube element and the female connector element includes a second shoulder extending outwardly relative to the main tube element and the at least one auxiliary tube element is mounted axially abutted against the first shoulder and against the second shoulder.

28. A riser pipe section as claimed in claim 20, wherein the male connector element is an extension of the main tube element and progressively increases in thickness relative to a thickness of the main tube element up to the first shoulder and the female connector element is an extension of main tube element and progressively increases in thickness relative to a thickness the main tube element up to the second shoulder.

30. A riser pipe section as claimed in claim 22, wherein the male connector element is an extension of the main tube element and progressively increases in thickness relative to a thickness of the main tube element up to the first shoulder and the female connector element is an extension of main tube element and progressively increases in thickness relative to a thickness the main tube element up to the second shoulder.

32. A riser pipe section as claimed in claim 24, wherein the male connector element is an extension of the main tube element and progressively increases in thickness relative to a thickness of the main tube element up to the first shoulder and the female connector element is an extension of main tube element and progressively increases in thickness relative to a thickness the main tube element up to the second shoulder.

34. A riser pipe section as claimed in claim 26, wherein the male connector element is an extension of the main tube element and progressively increases in thickness relative to a thickness of the main tube element up to the first shoulder and the female connector element is an extension of main tube element and progressively increases in thickness relative to a thickness the main tube element up to the second shoulder.

36. A riser pipe section as claimed in claim 12, comprising a wearing part which forms an extension of one end of the at least one auxiliary tube element.

37. A riser pipe section as claimed in claim 12, wherein the ring comprises means for rotating the locking ring.

38. A riser pipe section as claimed in claim 12, comprising a means for locking the locking ring.

39. A riser pipe comprising a plurality of riser pipe sections comprising a main tube element including an extension with a male connector element and a female connector element including first tenons, at least one auxiliary tube element secured to the male connector element and to the female connector element so that the main tube and the at least one auxiliary tube element jointly transmits tensile stresses between the male connector element and the female connector element, and wherein a locking ring is mounted on male connector element, with the locking ring comprising second tenons for locking the female and male connector elements together and wherein the longitudinal tensile stresses are distributed among the main tube element and the at least one auxiliary tube element of each riser pipe section.