Geopolymer formulations for mitigating losses

Patent metadata

Field	Value
Publication number	US-11976238-B2
Application number	US-202117487739-A
Country	US
Kind code	B2
Filing date	Sep 28, 2021
Priority date	Feb 14, 2020
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Methods and compositions for treating subterranean formations to mitigate lost circulation are provided. The methods of the present disclosure include forming a treatment fluid including one or more geopolymer lost circulation materials; introducing the treatment fluid into at least a portion of a subterranean formation that includes at least one loss zone; activating the geopolymer lost circulation materials to form a geopolymer that imparts a thixotropic property to the treatment fluid; and allowing the treatment fluid exhibiting the thixotropic property to at least partially reduce a rate of loss associated with the loss zone.

First claim

What is claimed is:

1. A composition comprising:
a base fluid; and
one or more geopolymer lost circulation materials, wherein the geopolymer lost circulation materials comprise:
an aluminosilicate source,
a metal silicate source;
an activator; and
water,

wherein the composition has a crush strength of about 72 psi or less when measured after 7 days.

2. The composition of claim 1 , wherein the aluminosilicate source is a metakaolin clay, the metal silicate source is a sodium silicate, and the activator is sodium hydroxide.

3. The composition of claim 2 , further comprising silica sand.

4. The composition of claim 1 , wherein the aluminosilicate source is present in an amount from about 10.0% to about 60.0% by weight of one or more geopolymer lost circulation materials.

5. The composition of claim 1 , wherein the metal silicate source is present in an amount from about 1.0% to about 50.0% by weight of the one or more geopolymer lost circulation materials.

6. The composition of claim 1 , wherein the activator is present in an amount from about 1.0% to about 60.0% by weight of the one or more geopolymer lost circulation materials.

7. The composition of claim 1 , wherein the base fluid comprises at least one component selected from the group consisting of: water, salt water, brine, seawater, and any combination thereof.

8. The composition of claim 1 , wherein the composition further comprises at least one additional lost circulation material having a specific gravity of from about 0.7 to about 4.0.

9. The composition of claim 1 , wherein the composition is substantially free of particulates other than the one or more geopolymer lost circulation materials.

10. The composition of claim 1 , further comprising silica sand.

11. A composition comprising:
a base fluid; and
one or more geopolymer lost circulation materials, wherein the geopolymer lost circulation materials comprise:
an aluminosilicate source,
a metal silicate source;
an activator, wherein the activator is present in an amount of 1.4-2.9% activator based on a total amount of the aluminosilicate source; and
water,

wherein the composition has a thixotropic rate of from about 27.6 lbf/100 ft 2 /min to about 50 lbf/100 ft 2 /min.

12. The composition of claim 11 , wherein the aluminosilicate source is a metakaolin clay, the metal silicate source is a sodium silicate, and the activator is sodium hydroxide.

13. The composition of claim 12 , wherein the composition has a crush strength of about 72 psi or less when measured after 7 days.

14. The composition of claim 12 , further comprising silica sand.

15. The composition of claim 11 , wherein the aluminosilicate source is present in an amount from about 10.0% to about 60.0% by weight of the one or more geopolymer lost circulation materials.

16. The composition of claim 11 , wherein the metal silicate source is present in an amount from about 1.0% to about 50.0% by weight of the one or more geopolymer lost circulation materials.

17. The composition of claim 11 , wherein the base fluid comprises at least one component selected from the group consisting of: water, salt water, brine, seawater, and any combination thereof.

18. The composition of claim 11 , wherein the composition further comprises at least one additional lost circulation material having a specific gravity of from about 0.7 to about 4.0.

19. The composition of claim 11 , wherein the composition is substantially free of particulates other than the one or more geopolymer lost circulation materials.

20. The composition of claim 11 , wherein the composition has a crush strength of about 72 psi or less when measured after 7 days.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason
• Fabricio Fernandes Heloisa Helena
• Morgan Ronnie Glen
• Martinez Juan Humberto

Classifications

• C09K8/487 Primary

  Fluid loss control additives; Additives for reducing or preventing circulation loss · CPC title

• C04B28/006

  containing mineral polymers, e.g. geopolymers of the Davidovits type · CPC title

• C09K8/426

  for plugging · CPC title

• C09K8/501

  using spacer compositions · CPC title

• E21B21/003 Primary

  Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138) · CPC title