Embedded treatment fluid additives for use in subterranean formation operations

Patent metadata

Field	Value
Publication number	US-11866636-B2
Application number	US-202217704723-A
Country	US
Kind code	B2
Filing date	Mar 25, 2022
Priority date	Dec 7, 2016
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

The present disclosure relates to subterranean formation operations and, more particularly, to embedded treatment fluid additives for use in subterranean formation operations. The embedded treatment additives may comprise an aqueous-soluble downhole reactive material embedded in a crosslinked polymeric solution to delay the reactivity of the aqueous-soluble downhole reactive material, thereby forming the embedded treatment additive, wherein the aqueous-soluble downhole reactive material is a solid.

First claim

What is claimed is:

1. An embedded treatment additive comprising:
an aqueous-soluble downhole reactive material embedded in a crosslinked polymeric solution to delay the reactivity of the aqueous-soluble downhole reactive material, thereby forming the embedded treatment additive, wherein the aqueous-soluble downhole reactive material comprises N-phosphonomethyliminodiacetic acid and is embedded in the crosslinked polymeric solution; and the crosslinked polymeric solution comprises polyvinyl alcohol;
wherein the aqueous-soluble downhole reactive material is a solid particulate.

2. The embedded treatment additive of claim 1 , wherein the embedded treatment additive further comprises an additional aqueous-soluble downhole reactive material selected from the group consisting of a chelating agent, a chain transfer agent, a buffer, a crosslinker, a breaker, and any combination thereof.

3. The embedded treatment additive of claim 1 , wherein the crosslinked polymeric solution additionally comprises another polymer selected from the group consisting of gelatin, guar, an acrylate, acrylamide, chitosan, alginate, and any combination thereof.

4. The embedded treatment additive of claim 1 , wherein the crosslinked polymeric solution comprises a crosslinker selected from the group consisting of a borate ion; a compound producing a borate ion; glutaraldehyde; N,N′-methylenebis(acrylamide); epichlorohydrin; calcium; and any combination thereof.

5. The embedded treatment additive of claim 1 , wherein the crosslinked polymeric solution comprises a crosslinker, and
wherein the polyvinyl alcohol is present in an amount in the range of from about 20% to about 80% by weight per weight of the combined polyvinyl alcohol and crosslinker.

6. The embedded treatment additive of claim 1 , wherein the embedded treatment additive has a unit mesh size in the range of about 0.5 micrometers to about 500 micrometers.

7. The embedded treatment additive of claim 1 , wherein the embedded treatment additive has a shape selected from the group consisting of spherical-shaped, substantially spherical-shaped, polygonal-shaped, sheet-shaped, rod-shaped, and any combination thereof.

8. The embedded treatment additive of claim 1 , wherein the embedded treatment fluid additive is a component of a treatment fluid; and wherein the treatment fluid comprises an aqueous base fluid.

9. The embedded treatment additive of claim 1 , wherein the aqueous-soluble downhole reactive material is configured to be released from the crosslinked polymeric solution during performance of a subterranean formation operation.

10. A system comprising:
a tubular extending into a subterranean formation; and
a pump fluidly coupled to the tubular, the tubular containing a treatment fluid comprising:
an aqueous base fluid and an embedded treatment additive,

wherein the embedded treatment additive comprises an aqueous-soluble downhole reactive material embedded in a crosslinked polymeric solution to delay the reactivity of the aqueous-soluble downhole reactive material, wherein the aqueous-soluble downhole reactive material comprises N-phosphonomethyliminodiacetic acid and is embedded in the crosslinked polymeric solution; and the crosslinked polymeric solution comprises polyvinyl alcohol; and
wherein the aqueous-soluble downhole reactive material is a solid particulate.

11. The system of claim 10 , wherein the embedded treatment additive further comprises an additional aqueous-soluble downhole reactive material selected from the group consisting of a chelating agent, a chain transfer agent, a buffer, a crosslinker, a breaker, and any combination thereof.

12. The system of claim 10 , wherein the crosslinked polymeric solution comprises a crosslinker.

13. The system of claim 10 , wherein the crosslinked polymeric solution additionally comprises another polymer selected from the group consisting of gelatin, guar, an acrylate, acrylamide, chitosan, alginate, and any combination thereof.

14. The system of claim 10 , wherein the crosslinked polymeric solution comprises a crosslinker selected from the group consisting of a borate ion; a compound producing a borate ion; glutaraldehyde; N,N′-methylenebis(acrylamide); epichlorohydrin; calcium; and any combination thereof.

15. The system of claim 10 , wherein the crosslinked polymeric solution comprises a crosslinker, and
wherein the polyvinyl alcohol is present in an amount in the range of from about 20% to about 80% by weight per weight of the combined polyvinyl alcohol and crosslinker.

16. The system of claim 10 , wherein the embedded treatment additive has a unit mesh size in the range of about 0.5 micrometers to about 500 micrometers.

17. The system of claim 10 , wherein the embedded treatment additive has a shape selected from the group consisting of spherical-shaped, substantially spherical-shaped, polygonal-shaped, sheet-shaped, rod-shaped, and any combination thereof.

18. The system of claim 10 , wherein the aqueous-soluble downhole reactive material is configured to be released from the crosslinked polymeric solution during performance of a subterranean formation operation.

19. The embedded treatment additive of claim 1 , wherein the crosslinked polymeric solution comprises a borate ion crosslinker.

20. The system of claim 10 , wherein the crosslinked polymeric solution comprises a borate ion crosslinker.

Assignees

• Halliburton Energy Services Inc

Inventors

• Singh Dipti
• Beuterbaugh Aaron Michael
• Reyes Enrique Antonio

Classifications

• C09K8/04 Primary

  Aqueous well-drilling compositions · CPC title

• C09K8/42

  Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50) · CPC title

• C09K8/52

  Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title

• C09K8/528

  inorganic depositions, e.g. sulfates or carbonates · CPC title

• C09K8/5756

  containing cross-linking agents · CPC title