System and method to seal multiple control lines

Patent metadata

Field	Value
Publication number	US-9803445-B2
Application number	US-66904008-A
Country	US
Kind code	B2
Filing date	May 20, 2008
Priority date	Jul 25, 2007
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A system in some embodiments includes sealing system including an energizing member that simultaneously seats a plurality of sealing elements about a plurality of control lines, respectively. Further embodiments provide a method including disposing a plurality of sealing elements about a plurality of control lines, respectively, and fastening an energizing member to simultaneously seat each of the sealing elements.

First claim

The invention claimed is:

1. A system, comprising:
a control line configured to extend into a bore;
an annular seal coaxial with and surrounding the control line, wherein the annular seal comprises a load ring or a ferrule disposed in the same bore as the control line;
a fastener at an offset and external from the control line and the annular seal; and
an energizing member configured to bias the annular seal toward a seated position with the control line in response to movement of the fastener.

2. The system of claim 1 , wherein the energizing member is configured to simultaneously bias a plurality of annular seals about a plurality of control lines, respectively.

3. The system of claim 1 , wherein the fastener is configured to move in a first direction and the energizing member is configured to move the annular seal in a second direction different from the first direction of the fastener.

4. The system of claim 3 , wherein the first and second directions are opposite from one another.

5. The system of claim 1 , wherein the control line is coupled to a mineral extraction system, a mineral transportation system, a mineral processing system, or a combination thereof.

6. The system of claim 1 , wherein the annular seal is configured to seal the control line with a control block of a subsea christmas tree.

7. The system of claim 1 , wherein the ferrule comprises a plurality of ferrules configured to wedgingly engage one another.

8. The system of claim 1 , wherein the annular seal is an annular metallic seal.

9. A system, comprising:
a plurality of load rings configured to mount around and move axially about a plurality of control lines, wherein a first load ring surrounds a first control line but not a second control line, and a second load ring surrounds the second control line but not the first control line; and an energizing member configured to bias the plurality of load rings for simultaneously energizing and seating a plurality of sealing elements about the plurality of control lines, respectively.

10. The system of claim 9 , wherein the sealing elements each comprise a ferrule.

11. The system of claim 9 , wherein the sealing elements each comprise a plurality of ferrules configured to wedgingly engage one another.

12. The system of claim 9 , comprising a fastener configured to bias the energizing member, wherein the fastener is configured to mount at an offset and external from the plurality of load rings, the plurality of control lines, and the plurality of sealing elements.

13. The system of claim 9 , comprising a mineral resource system having the plurality of sealing elements, the plurality of control lines, the plurality of load rings, and the energizing member, wherein the mineral resource system comprises a fluid line control block, a well, a wellhead, a subsea tree, a mineral deposit, a valve, a controller, a remote station, tubing, or a combination thereof.

14. A system, comprising:
a control block comprising a plurality of passages each having a control line and an annular seal coaxial with the control line, wherein a force applied to an energizing member is configured to simultaneously couple and seat the annular seals coaxially with the control lines associated with the plurality of passages, respectively; and
a fastener offset and external from the passages and the annular seal, wherein the fastener is configured to provide the force to the energizing member.

15. The system of claim 14 , wherein the fastener is configured to move in a first direction and the energizing member is configured to move the annular seal in a second direction different from the first direction of the fastener.

16. The system of claim 14 , wherein the energizing member comprises a plate, a body, and a lip.

17. The system of claim 14 , comprising a plurality of load rings disposed between the energizing member and the annular seals, respectively.

18. The system of claim 14 , wherein each annular seal comprises a ferrule.

19. The system of claim 14 , wherein the control line is configured to accept a fluid pressure to control and/or monitor components coupled to a wellhead system.

Assignees

• Nguyen Dennis P
• Cameron Int Corp

Inventors

• Nguyen Dennis P

Classifications

• E21B33/038 Primary

  Connectors used on well heads, e.g. for connecting blow-out preventer and riser · CPC title

• E21B33/03 Primary

  Well heads; Setting-up thereof · CPC title

• E21B33/04

  Casing heads; Suspending casings or tubings in well heads · CPC title

• E21B33/035

  specially adapted for underwater installations (E21B33/043, E21B33/064, E21B33/076 take precedence) · CPC title

• E21B33/0355

  Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads · CPC title