Slip assembly for a downhole tool

Patent metadata

Field	Value
Publication number	US-11293244-B2
Application number	US-202016805297-A
Country	US
Kind code	B2
Filing date	Feb 28, 2020
Priority date	Feb 28, 2020
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A downhole tool for engaging a downhole tubular includes a slip assembly. The slip assembly may include a slip body; a slip insert disposed in the slip body, the slip insert comprising a dissolvable metal alloy; and a plurality of gripping elements coupled to the slip insert, the gripping element configured to engage the downhole tubular.

First claim

The invention claimed is:

1. A downhole tool for engaging a downhole tubular, comprising:
a slip assembly having:
a slip body;
a slip insert disposed in a pocket of the slip body, the slip insert comprising a dissolvable metal alloy; and
a plurality of gripping elements disposed in a respective cavity of the slip insert, the gripping element configured to engage the downhole tubular.

2. The tool of claim 1 , wherein the slip body is formed using an injection molded process.

3. The tool of claim 2 , wherein the slip body comprises a unitary tubular body.

4. The tool of claim 3 , further comprising a slot formed in the slip body.

5. The tool of claim 2 , further comprising a sealing member configured to engage the downhole tubular.

6. The tool of claim 5 , wherein the sealing member comprises a sealing ring disposed on an outer surface of the slip body.

7. The tool of claim 5 , wherein the sealing member comprises a protrusion formed on an outer surface of the slip body.

8. The tool of claim 7 , wherein the slip assembly includes a plurality of slip segments and wherein each of the slip segments includes the slip body.

9. The tool of claim 8 , further comprising a seal assembly having a plurality of seal segments.

10. The tool of claim 9 , wherein the protrusion formed on the plurality of seal segments is configured to form a sealing ring with the protrusion of the slip segment.

11. The tool of claim 1 , wherein the plurality of gripping elements comprise a plurality of buttons.

12. The tool of claim 1 , wherein the pocket extends through a depth of the slip body.

13. The tool of claim 1 , wherein the slip insert includes teeth formed on an interior surface.

14. The tool of claim 2 , wherein the slip assembly includes a plurality of slip segments and wherein each of the slip segments includes the slip body.

15. The tool of claim 14 , further comprising a band for retaining the plurality of slip segments.

16. A downhole tool for engaging a downhole tubular, comprising:
a cone having an inclined surface;
a slip assembly configured to ride along the inclined surface, the slip assembly having:
an injection molded slip body comprising a dissolvable polymer;
a slip insert disposed in the slip body, the slip insert comprising a dissolvable metal alloy; and
a plurality of gripping elements coupled to the slip insert, the gripping elements configured to engage the downhole tubular.

17. The tool of claim 16 , wherein the slip insert includes a plurality of cavities for housing a respective gripping element.

18. The tool of claim 17 , wherein the slip insert is disposed in a pocket of the slip body.

19. A downhole tool for engaging a downhole tubular, comprising:
a slip assembly having a plurality of slip segments, each slip segment including:
a slip body;
a slip insert disposed in the slip body, the slip insert comprising a dissolvable metal alloy;
a plurality of gripping elements coupled to the slip insert, the gripping element configured to engage the downhole tubular; and
a protrusion formed on an outer surface of the slip body; and

a seal assembly having a plurality of seal segments.

20. The tool of claim 19 , wherein a protrusion formed on the plurality of seal segments is configured to form a sealing ring with the protrusion of the slip segment.

Assignees

• Weatherford Tech Holdings Llc

Inventors

• Mhaskar Nauman H
• Reyes Villegas Jorge
• Rochen James A
• Arredondo Jose L

Classifications

• E21B33/129

  with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence) · CPC title

• E21B33/1291

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

• E21B23/01 Primary

  for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) · CPC title