Composition and method for improved treatment fluid

Patent metadata

Field	Value
Publication number	US-10633581-B2
Application number	US-201415511182-A
Country	US
Kind code	B2
Filing date	Nov 12, 2014
Priority date	Nov 12, 2014
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A composition and method for using seawater as a treatment fluid is provided. The treatment fluid comprises N-(phosphonomethyl)iminodiacetic acid and seawater. The provided treatment fluid is stable and viscous, even at high temperatures and a high pH.

First claim

What is claimed is:

1. A method for treating a subterranean formation comprising:
(a) providing a treatment fluid comprising:
a N-(phosphonoalkyl)iminodiacetic acid;
seawater; and
a gelling agent, wherein the gelling agent is present in the treatment fluid in an amount from 20 to 80 parts per thousand, and wherein said N-(phosphonoalkyl)iminodiacetic acid is present in the treatment fluid in an amount of at least 4 parts per thousand so as to reduce the adverse effects of salts and minerals in the seawater on the viscosity of the treatment fluid such that the treatment fluid has a viscosity of at least about 150 cP after 6 minutes at a temperature above 200° F.; and

(b) introducing the treatment fluid into the subterranean formation having a temperature of greater than 200° F.

2. The method of claim 1 , further comprising mixing the treatment fluid using mixing equipment.

3. The method of claim 2 wherein the treatment fluid is introduced into the subterranean formation using one or more pumps.

4. The method of claim 1 , wherein said N-(phosphonoalkyl)iminodiacetic acid is present in the treatment fluid in an amount of from 0.4 to 5 percent by weight based on the total weight of said treatment fluid.

5. The method of claim 1 , wherein said treatment fluid further comprises a gel stabilizer.

6. The method of claim 1 , wherein said treatment fluid further comprises a crosslinker.

7. The method of claim 1 , wherein said treatment fluid further comprises a gel stabilizer and crosslinkers.

8. The method of claim 1 , wherein said alkyl group of said N-(phosphonoalkyl)iminodiacetic acid of said treatment fluid contains from 1 to 6 carbon atoms.

9. The method of claim 1 , wherein said alkyl group of said N-(phosphonoalkyl)iminodiacetic of said treatment fluid contains 1 carbon atom.

10. The method of claim 5 , wherein said treatment fluid further comprises an additive selected from the group consisting of a pH control agent, a buffering agent, and mixtures thereof.

11. The method of claim 10 , wherein said treatment fluid has a pH greater than 4.

12. The method of claim 4 , wherein said method for treating the subterranean formation is a method of fracturing a hydrocarbon containing formation.

13. A method for treating a subterranean formation comprising:
(a) providing a treatment fluid comprising:
an N-(phosphonoalkyl)iminodiacetic acid, wherein said alkyl group of said N-(phosphonoalkyl)iminodiacetic acid contains from 1 to 6 carbon atoms;
seawater;
a gelling agent; and
a gel stabilizer, wherein the gelling agent is present in the treatment fluid in an amount from 20 to 80 parts per thousand, and wherein said N-(phosphonoalkyl)iminodiacetic acid is present in the treatment fluid in an amount of at least 4 parts per thousand so as to reduce the adverse effects of salts and minerals in the seawater on the viscosity of the treatment fluid such that the treatment fluid has a viscosity of at least about 150 cP after 6 minutes at a temperature above 200° F.; and

(b) introducing the treatment fluid into the subterranean formation having a temperature of greater than 200° F.

14. The method of claim 13 , wherein said N-(phosphonoalkyl)iminodiacetic acid is present in the treatment fluid in an amount of from 0.4 to 5 percent by weight based on the total weight of said treatment fluid.

15. The method of claim 13 , wherein said treatment fluid further comprises a crosslinker.

16. The method of claim 13 , wherein said alkyl group of said N-(phosphonoalkyl)iminodiacetic of said treatment fluid contains 1 carbon atom.

17. The method of claim 13 , wherein said treatment fluid further comprises an additive selected from the group consisting of a pH control agent, a buffering agent, and mixtures thereof.

18. The method of claim 13 , wherein said method for treating a hydrocarbon containing formation is a method of fracturing subterranean formation.

Assignees

• Halliburton Energy Services Inc

Inventors

• Lablanc Benjamin Edward
• Reyes Enrique Antonio
• Smith Alyssa Lynn
• Beuterbaugh Aaron Michael

Classifications

• C09K8/725

  Compositions containing polymers · CPC title

• C09K8/76

  for preventing or reducing fluid loss · CPC title

• C09K8/887 Primary

  containing cross-linking agents · CPC title

• C09K8/90

  of natural origin, e.g. polysaccharides, cellulose · CPC title

• C09K8/512

  containing cross-linking agents · CPC title