Ram packer extraction tool

Patent metadata

Field	Value
Publication number	US-9777546-B2
Application number	US-201113277883-A
Country	US
Kind code	B2
Filing date	Oct 20, 2011
Priority date	Oct 20, 2011
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A system to remove a ram packer from a ram block is provided. In one embodiment, the system includes an extraction tool having opposing jaws configured to engage a ram packer installed in a ram block. The system may also include an actuator configured to move the opposing jaws to facilitate separation of the ram packer from the ram block. Additional systems, devices, and methods are also disclosed.

First claim

The invention claimed is:

1. A method to remove a ram packer from a ram block, the method comprising:
receiving a ram block including a ram packer;
aligning opposing jaws with respect to the ram packer;
closing the opposing jaws to engage the ram packer; and
moving the closed, opposing jaws away from the ram block to pull the ram packer from the ram block;
wherein aligning the opposing jaws includes aligning teeth of the opposing jaws with the ram block and the ram packer, and wherein closing the opposing jaws to engage the ram packer includes inserting the teeth of the opposing jaws into an elastomeric material of the ram packer.

2. The method of claim 1 , wherein closing the opposing jaws to engage the ram packer includes closing the opposing jaws to insert teeth of each of the opposing jaws into the ram packer such that the teeth of each of the opposing jaws are positioned about a respective pin extending from the ram packer into the ram block and are positioned under a crossbar connected to the respective pin within the ram packer.

3. The method of claim 1 , wherein receiving the ram block includes receiving the ram block about a button such that the button retains the ram block during moving of the closed, opposing jaws away from the ram block to pull the ram packer from the ram block.

4. The method of claim 3 , comprising receiving the button in a threaded hole of a platform.

5. The method of claim 1 , wherein aligning the opposing jaws, closing the opposing jaws, and moving the closed, opposing jaws away from the ram block are performed with hydraulic cylinders in response to user input.

6. The method of claim 1 , comprising:
receiving an additional ram block of a different size;
aligning the opposing jaws with an additional ram packer installed in the additional ram block;
closing the opposing jaws to engage the additional ram packer; and
moving the closed, opposing jaws away from the additional ram block to pull the additional ram packer from the additional ram block.

7. The method of claim 1 , wherein closing the opposing jaws to engage the ram packer includes wedging the teeth of the opposing jaws between the ram block and crossbars of the ram packer within the elastomeric material.

Assignees

• Hoover Richard Ryan Barr
• Thiruvannamalai Sankar Norman
• Afonso Alexandre Montini Accioly
• Cameron Int Corp

Inventors

• Hoover Richard Ryan Barr
• Thiruvannamalai Sankar Norman
• Afonso Alexandre Montini Accioly

Classifications

• E21B33/062 Primary

  with sliding rams · CPC title

• E21B33/06

  Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} · CPC title

• B23P19/025

  For detaching only · CPC title

• Y10T29/53983

  Work-supported apparatus · CPC title

• Y10T29/49821

  by altering or destroying work part or connector · CPC title