Setting adapter assembly for plug

Patent metadata

Field	Value
Publication number	US-11021928-B2
Application number	US-201916654821-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Oct 16, 2018
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A setting adapter assembly for setting a plug is provided, it comprises a setting body, a crossover sub, a shear ring connecting the setting body and the crossover sub temporarily, a rotating dog carrier at a lower end of the setting body, a plurality of rotating dogs accommodated in the rotating dog carrier; an inner mandrel, The rotating dogs are in their vertical position to compress the plug during a process of setting the plug, and during a process of withdrawing, the rotating dogs rotate 90 degrees into their horizontal position driven by the inner mandrel to allow the setting adapter assembly pass through the plug.

First claim

What is claimed is:

1. A setting adapter assembly for setting a plug, comprising:
a setting body;
a crossover sub;
a shear ring connecting the setting body and the crossover sub temporarily;
a rotating dog carrier at a lower end of the setting body;
a plurality of rotating dogs accommodated in the rotating dog carrier;
an inner mandrel fixedly connecting with the crossover sub and extending through the shear ring, and the setting body, and extending into an inner chamber of the rotating dog carrier:
wherein the rotating dogs are initially arranged at a bottom of the plug and in a vertical position are arranged to compress the plug during a process of setting the plug, and during a process of withdrawing the setting adapter assembly, the rotating dogs rotate 90 degrees into a horizontal position triggered by movement of the inner mandrel to allow the setting adapter assembly to pass through the plug.

2. The setting adapter assembly of claim 1 , wherein the rotating dog carrier comprises a plurality of dog carrier subs to accommodate corresponding rotating dogs.

3. The setting adapter assembly of claim 2 , wherein each of the rotating dogs comprises a setting tab and a pivot pin.

4. The setting adapter assembly of claim 3 , wherein the dog carrier subs comprises slots to accommodate the pivot pins.

5. The setting adapter assembly of claim 4 , wherein the inner mandrel comprises a pocket to accommodate a portion of the setting tabs when the rotating dogs are in their vertical position.

6. The setting adapter assembly of claim 5 , wherein the setting tab comprises a ramped face, the inner mandrel comprising a bottom end being adjacent the pocket, the bottom end comprising a ramped leading edge face for engaging a ramped face of the setting tab.

7. The setting adapter assembly of claim 6 , further comprising: a travel restriction mechanism to limit the distance that the inner mandrel can move in the setting body.

8. The setting adapter assembly of claim 7 , wherein the travel restriction mechanism comprises a locking ring and a circumferential groove.

9. The setting adapter assembly of claim 8 , wherein the locking ring is embedded in a slot in the inner surface of the setting body and is located adjacent a bottom end of the shear ring.

10. The setting adapter assembly of claim 8 , wherein the length of the circumferential groove is configured to allow the inner mandrel to move from an initial position to a position where the bottom end of the inner mandrel abuts the setting tabs to keep the rotating dogs in their horizontal position.

11. A method of setting a plug using a setting adapter assembly, comprising the steps of:
arranging the setting adapter assembly between the plug and a setting tool; the setting adapter assembly comprising:
a setting body;
a crossover sub;
a shear ring connecting the setting body and the crossover sub temporarily;
a rotating dog carrier at a lower end of the setting body;
a plurality of rotating dogs accommodated in the rotating dog carrier;
an inner mandrel fixedly connecting with the crossover sub and extending through the shear ring, and the setting body, and extending into an inner chamber of the rotating dog carrier:

wherein the rotating dogs are initially arranged at a bottom of the plug and in a vertical position are arranged to compress the plug during a process of setting the plug, and
wherein during a process of withdrawing the setting adapter assembly, the rotating dogs rotate 90 degrees into a horizontal position triggered by movement of the inner mandrel to allow the setting adapter assembly to pass through the plug;
running the setting tool loaded with the plug and the setting adapter assembly downhole to a desired location;
pushing a plug body of the plug downwardly with a first force while keeping the crossover sub staying still to set the plug;
pushing the plug body of the plug downwardly with a second force to shear the shear ring;
withdrawing the setting adapter assembly through the plug.

Assignees

• Cnpc Usa Corp

Inventors

• Patsy Matthew
• Nettles Damon

Classifications

• E21B33/1291 Primary

  anchor set by wedge or cam in combination with frictional effect, using so-called drag-blocks (E21B33/1295 takes precedence) · CPC title

• E21B33/128

  with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence) · CPC title