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In a coiled tubing assembly for use in a wellbore, the tubing assembly uses longitudinally spaced apart clamping members to clamp two or more coiled tubing members alongside one another. Each clamping member includes a clamping portion extending circumferentially about each coiled tubing member so as to be rotatable in relation thereto, and a connecting portion joined between the clamping portions. A longitudinal positioning element is fixed relative to one of the tubing members in association with each clamping member such that the clamping member remains pivotal relative to the positioning element and the tubing members upon which it is fixed. The longitudinal positioning element thus only restricts the respective clamping assembly in the longitudinal direction along the tubing members without restricting relative twisting between the tubing members.

Titel:	Multi-conduit coiled tubing assembly including pivotal clamping members
Autor/in / Beteiligte Person:	CJS Production Technologies Inc.
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2018
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 10053,927 Publication Date: August 21, 2018 Appl. No: 15/526647 Application Filed: November 03, 2015 Assignees: CJS Production Technologies Inc. (Calgary, CA) Claim: 1. A coiled tubing assembly arranged for use in a wellbore, the tubing assembly comprising: at least two continuous coiled tubing members, each defining a respective conduit extending in a longitudinal direction and arranged to receive wellbore fluids longitudinally therethrough; and a plurality clamp assemblies connecting the tubing members to one another at respective clamping locations spaced apart from one another in the longitudinal direction such that the tubing members extend alongside one another in a parallel configuration; each clamp assembly comprising: a clamping portion extending circumferentially about each coiled tubing member which is sized so as to allow some relative pivotal movement therebetween; at least one connecting portion joined between one clamping portion and at least one other adjacent clamping portion such that the clamping portions are interconnected; and at least one longitudinal positioning element fixed relative to one of the tubing members so as to be arranged to restrict longitudinal displacement of the clamp assembly relative to said one of the tubing members; and the clamp assembly being pivotal relative to the longitudinal positioning element about a longitudinal axis of the tubing member upon which the longitudinal positioning element is fixed. Claim: 2. The assembly according to claim 1 wherein the clamping portions of each clamping assembly include a first clamping portion extending circumferentially about a first one of the tubing members and a second clamping portion extending circumferentially about a second one of the tubing members and which is joined to the first clamping portion by said at least one connecting portion, and wherein the longitudinal positioning element extends circumferentially about the second one of the tubing member in fixed relation thereto. Claim: 3. The assembly according to claim 2 wherein one of the second clamping portion and the longitudinal positioning element comprises a sleeve supported concentrically on the second one of the tubing members and another one of the second clamping portion and the longitudinal positioning element comprises a pair of collars supported concentrically on the second one of the tubing members at longitudinally opposed ends of the sleeve. Claim: 4. The assembly according to claim 3 wherein there is provided an annular gap between the sleeve and each collar in the longitudinal direction of the second one of the tubing members. Claim: 5. The assembly according to claim 3 wherein the second clamping portion comprises the sleeve such that the sleeve is fixed to said at least one connecting portion and the longitudinal positioning element comprises the pair of collars such that the pair of collars are fixed to the second one of the tubing members. Claim: 6. The assembly according to claim 3 wherein each collar of the pair of collars comprises an inner annular end face arranged to abut the sleeve and an outer end face which is chamfered so as to be reduced in outer diameter in a longitudinally outward direction. Claim: 7. The assembly according to claim 2 wherein a combined length of the second clamping portion and the longitudinal positioning element along the second one of the tubing members is approximately equal to a length of the first clamping portion along the first one of the tubing members. Claim: 8. The assembly according to claim 2 wherein the first clamping portion extends longitudinally between opposing outer end faces which are chamfered so as to be reduced in outer diameter in a longitudinally outward direction. Claim: 9. The assembly according to claim 1 wherein said at least one connecting portion is connected in fixed relation to each of the clamping portions. Claim: 10. The assembly according to claim 1 wherein said at least one connecting portion and the clamping portions are integrally formed with one another as a single unitary body. Claim: 11. The assembly according to claim 1 wherein the longitudinal positioning element is welded to said one of the coiled tubing members relative to which the longitudinal positioning element is fixed. Claim: 12. The assembly according to claim 11 wherein the longitudinal positioning element is fixed by a plurality of individual welds between the longitudinal positioning element and said one of the coiled tubing members at spaced apart positions from one another. Claim: 13. The assembly according to claim 1 wherein each clamping portion includes at least one slotted opening communicating radially from an inner surface to an outer surface of the clamping portion, said at least one slotted opening being elongated in a circumferential direction so as to extend partway about a circumference of the respective coiled tubing member received through the clamping portion. Claim: 14. The assembly according to claim 1 wherein the clamping portions have respective longitudinal axes lying in a common plane and wherein said at least one slotted opening comprises a plurality of slotted openings in opposing sides of the respective clamping portion relative to said common plane. Claim: 15. The assembly according to claim 1 wherein the clamping portions and connection portion are formed of a common elastically deformable material. Claim: 16. The assembly according to claim 1 wherein the longitudinal positioning element is supported about said one of the tubing members in an elastically stretched state. Claim: 17. The assembly according to claim 1 further comprising an annular spacer element formed of consumable material mounted between each clamping portion and the respective tubing member. Claim: 18. The assembly according to claim 1 wherein the clamping portions have respective inner diameters which are substantially identical to one another. Patent References Cited: 4601334 July 1986 Lovegrove ; 5806615 September 1998 Appleton ; 6305476 October 2001 Knight ; 9714728 July 2017 Chen ; 2867221 September 2013 ; 2826051 December 2002 ; 2297337 July 1996 Primary Examiner: King, Anita M Attorney, Agent or Firm: Dupuis, Ryan W. ; Ade & Company Inc. ; Satterthwaite, Kyle R.

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Multi-conduit coiled tubing assembly including pivotal clamping members