Frac plug and method for fracturing a formation

Patent metadata

Field	Value
Publication number	US-11293247-B2
Application number	US-202016776161-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Sep 12, 2016
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A downhole barrier having a component thereof comprising a spalling material.

First claim

What is claimed is:

1. A downhole barrier having a component thereof comprising a spalling material, wherein the spalling material comprises a cementitious material, an aggregate, and a ductility modifying agent; and the downhole barrier spalls upon phase transitioning free water in the spalling material or upon unbinding water in the spalling material, wherein downhole barrier further comprises a device capable of generating a temperature change therein or a material capable of undergoing an exothermic reaction, to initiate phase transitioning free water in the spalling material.

2. A downhole barrier as claimed in claim 1 wherein both
a mandrel; and
a cone, comprise the spalling material.

3. The downhole barrier as claimed in claim 2 further including a slip, and an element.

4. The downhole barrier as claimed in claim 3 wherein the slip comprises a spalling material.

5. The downhole barrier as claimed in claim 3 further including a pusher.

6. The downhole barrier as claimed in claim 3 wherein the pusher comprises a spalling material.

7. A method for destabilizing a barrier in a borehole comprising;
initiating a threshold temperature of a barrier as claimed in claim 1 whereat the barrier spalls.

8. The method as claimed in claim 7 wherein the initiating includes phase transitioning free water in the spalling material.

9. The method as claimed in claim 7 wherein the initiating includes unbinding water in the material.

10. The method as claimed in claim 7 wherein the initiating includes creating a thermal gradient in the spalling material.

11. The method as claimed in claim 7 wherein the initiating is allowing ambient downhole temperature to raise the barrier to the threshold temperature.

12. The method as claimed in claim 7 wherein the initiating is by pumping a fluid having a different temperature to the barrier.

13. The method as claimed in claim 7 wherein the initiating is by applying a selected temperature to the barrier using a device capable of generating a temperature change therein.

14. The method as claimed in claim 13 wherein the device is electrically activated.

15. The method as claimed in claim 13 wherein the device is a heater.

16. The method as claimed in claim 7 wherein the initiating is by causing an exothermic chemical reaction at the barrier.

17. A borehole system comprising:
a borehole in a subsurface formation;
a barrier as claimed in claim 1 disposed in the borehole.

18. The borehole system as claimed in claim 17 further including a string in the borehole, the barrier being disposed in the string.

19. The downhole barrier as claimed in claim 1 , wherein the downhole barrier undergoes explosive spalling upon phase transitioning free water in the spalling material or upon unbinding water in the spalling material.

Assignees

• Dolog Rostyslav
• Parekh Yash
• Baker Hughes A Ge Co Llc

Inventors

• Dolog Rostyslav
• Parekh Yash

Classifications

• E21B33/1293 Primary

  with means for anchoring against downward and upward movement (E21B33/1291, E21B33/1295 take precedence) · CPC title

• E21B33/128

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

• E21B29/02 Primary

  by explosives or by thermal or chemical means {(freeing stuck objects by explosives E21B31/002)} · CPC title

• E21B36/04

  using electrical heaters · CPC title