System and Method for Reducing Pipe Ovality

Patent metadata

Field	Value
Publication number	US-2016101453-A1
Application number	US-201414513366-A
Country	US
Kind code	A1
Filing date	Oct 14, 2014
Priority date	Oct 14, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

The present disclosure provides a method for reducing ovality in pipe for joining to pipe components by using a plug coupled on an inside surface of the pipe and a sacrificial component coupled to the end of the pipe to establish a coupling interface. The plug, the sacrificial component, or a combination thereof assists in minimizing ovality changes during use of the pipe, particularly at the end of the pipe. When the pipe is to be coupled with a pipe component, the pipe and sacrificial component are separated at a different location than the coupling interface along the pipe in proximity to the plug. The plug is left coupled to the sacrificial component, and generally slidably engaged with the pipe. The plug and the sacrificial component can be removed from engagement with the pipe. The pipe and the pipe component can be coupled together.

First claim

What is claimed is:

1 . A method for reducing ovality changes in a pipe for coupling with a pipe component, the pipe having a plug inserted into a pipe end and fixedly coupled to the pipe at a coupling distance from the pipe end and the pipe further having a sacrificial component coupled to the end of the pipe, the method comprising:
separating a portion of the pipe from the sacrificial component at a greater distance than the coupling distance, thereby transferring the coupling of the plug with the pipe independently of the sacrificial component to a coupling with the sacrificial component independently of the pipe; and removing the plug coupled with the sacrificial component out of an inside of the pipe.

2 . The method of claim 1 , further comprising coupling the pipe component to the end of the pipe.

3 . The method of claim 1 , wherein the pipe has been pre-cut in a middle portion of the pipe to establish an end for insertion of the plug into the pipe and the sacrificial is component comprises a portion of the pipe recoupled to the pipe.

4 . The method of claim 1 , wherein cutting the portion of the pipe comprises cutting the pipe portion at a position that is greater than a distance of the coupling of the plug with the pipe but less than a distance to a distal end of the plug relative to the pipe end.

5 . The method of claim 1 , further comprising identifying a position of the plug in the pipe from the end of the pipe prior to coupling the sacrificial component to the pipe, and using that position to determine the distance for cutting the pipe portion.

6 . The method of claim 1 , wherein the plug is recessed inside the pipe longitudinally from the pipe end and coupled to the pipe.

7 . The method of claim 1 , further comprising preparing the pipe with the plug and sacrificial component, comprising
inserting the plug into the pipe end of the pipe; fixedly coupling the plug in the pipe; and coupling the sacrificial component with the end of the pipe.

Assignees

• Technip France

Inventors

• Paupy Laurent Frank
• Anne Fabien
• Boisne Mathieu
• Keith Eric Christopher

Classifications

• F16L57/005 Primary

  specially adapted for the ends of pipes · CPC title

• B21D3/16 Primary

  of specific articles made from metal rods, tubes, or profiles, e.g. crankshafts, by specially adapted methods or means · CPC title

• F16L1/12

  Laying or reclaiming pipes on or under water · CPC title

• Y10T29/4981

  Utilizing transitory attached element or associated separate material · CPC title

• F16L1/20

  Accessories therefor, e.g. floats or weights · CPC title