Flexible fracturing line with removable liner

Patent metadata

Field	Value
Publication number	US-11066913-B2
Application number	US-202016862390-A
Country	US
Kind code	B2
Filing date	Apr 29, 2020
Priority date	May 1, 2016
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A fracturing fluid delivery system having a fracturing line with a flexible liner is provided. In one embodiment, a method includes moving a flexible polymeric liner through a bore of a fracturing line to a position in which the flexible polymeric liner extends along an inner wall of a flexible pipe body of the fracturing line. The method also includes securing the flexible polymeric liner in the bore of the fracturing line, such as by attaching the flexible polymeric liner to an opposing surface of the fracturing line. Additional systems, devices, and methods are also disclosed.

First claim

The invention claimed is:

1. A method comprising:
moving a flexible polymeric liner through a bore of a fracturing line to a position in which the flexible polymeric liner extends along an inner wall of a flexible pipe body of the fracturing line, wherein the flexible pipe body extends between a first rigid end connector and a second rigid end connector of the fracturing line; and
securing the flexible polymeric liner in the bore of the fracturing line, wherein securing the flexible polymeric liner in the bore of the fracturing line includes attaching the flexible polymeric liner to an opposing surface of at least one of the first rigid end connector or the second rigid end connector of the fracturing line while the flexible polymeric liner remains unattached to the flexible pipe body.

2. The method of claim 1 , wherein attaching the flexible polymeric liner to the opposing surface includes inserting a ferrule into the bore of the fracturing line and radially expanding the ferrule to press the flexible polymeric liner against the opposing surface.

3. The method of claim 2 , wherein radially expanding the ferrule to press the flexible polymeric liner against the opposing surface includes radially expanding the ferrule to press the flexible polymeric liner radially outward into a groove of the opposing surface.

4. The method of claim 2 , wherein radially expanding the ferrule to press the flexible polymeric liner against the opposing surface includes radially expanding the ferrule to press the flexible polymeric liner radially outward into engagement with retention nibs of the opposing surface.

5. The method of claim 2 , wherein radially expanding the ferrule to press the flexible polymeric liner against the opposing surface includes radially expanding the ferrule to press the flexible polymeric liner against a metal body of the first rigid end connector or of the second rigid end connector.

6. The method of claim 2 , comprising deforming a portion of the ferrule protruding from an end of the flexible polymeric liner into contact with the first or second rigid end connector.

7. The method of claim 2 , wherein the ferrule is a metal ring and inserting the ferrule into the bore of the fracturing line includes fully inserting the metal ring into the bore of the fracturing line.

8. The method of claim 2 , wherein securing the flexible polymeric liner in the bore of the fracturing line includes inserting an additional ferrule into the bore of the fracturing line and radially expanding the additional ferrule to press the flexible polymeric liner against an additional opposing surface of the fracturing line.

9. The method of claim 8 , wherein the radially expanded ferrule and the radially expanded additional ferrule secure the flexible polymeric liner in the bore at opposite ends of the fracturing line.

10. The method of claim 1 , wherein moving the flexible polymeric liner through the bore of the fracturing line includes running the flexible polymeric liner into the bore through an end of the fracturing line.

11. The method of claim 1 , wherein securing the flexible polymeric liner in the bore of the fracturing line does not include adhering the flexible polymeric liner to the flexible pipe body.

12. The method of claim 1 , comprising removing the flexible polymeric liner from the bore of the fracturing line.

13. The method of claim 12 , comprising cutting the fracturing line to facilitate removal of the flexible polymeric liner from the bore of the fracturing line.

14. A fracturing apparatus comprising:
a wellhead assembly; and
a fracturing line coupled to convey fracturing fluid toward the wellhead assembly, the fracturing line having:
a first rigid end;
a second rigid end;
a flexible pipe body extending from the first rigid end to the second rigid end; and
a flexible polymeric liner extending from the first rigid end to the second rigid end along an inner wall of the flexible pipe body to isolate the flexible pipe body from fracturing fluid routed through the fracturing line, wherein the flexible polymeric liner is affixed to at least one of the first rigid end or the second rigid end but is not affixed to the inner wall of the flexible pipe body.

15. The fracturing apparatus of claim 14 , wherein the wellhead assembly includes a fracturing tree.

16. The fracturing apparatus of claim 15 , wherein the fracturing line is connected to the fracturing tree.

17. The fracturing apparatus of claim 14 , comprising a fracturing manifold having a trunk line for providing fracturing fluid to multiple wells.

18. The fracturing apparatus of claim 17 , wherein the fracturing line is coupled between the trunk line and the wellhead assembly.

19. The fracturing apparatus of claim 14 , wherein the flexible polymeric liner is attached to the first rigid end via a ferrule that compresses the flexible polymeric liner against the first rigid end.

Assignees

• Cameron Int Corp

Inventors

• Guidry Kirk P
• Khokhar Aleem A

Classifications

• E21B43/2607 Primary

  Surface equipment specially adapted for fracturing operations · CPC title

• E21B43/26 Primary

  by forming crevices or fractures · CPC title