Sulfonated relative permeability modifiers for reducing subterranean formation water permeability

Patent metadata

Field	Value
Publication number	US-9598631-B2
Application number	US-201515108196-A
Country	US
Kind code	B2
Filing date	Mar 5, 2015
Priority date	Mar 5, 2015
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

Compositions and methods for treating a water and hydrocarbon producing subterranean formation to reduce the water permeability of the formation without reducing the hydrocarbon permeability of the formation are provided. In one embodiment, the method includes providing a treatment fluid including a base fluid and a relative permeability modifier including a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer includes a sulfonate moiety, and introducing the treatment fluid into at least a portion of a subterranean formation.

First claim

What is claimed is:

1. A relative permeability modifier comprising:
a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer comprises a sulfonate moiety and wherein the relative permeability modifier comprises the following structure:

wherein X is an integer from 1500 to 20,000, Y is an integer from 25 to 320, Z is an integer from 25 to 430, and n is an integer from 2 to 25.

2. The relative permeability modifier of claim 1 , wherein the hydrophilic monomer is selected from the group consisting of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N-dimethylacrylamide, vinyl pyrrolidone, dimethylaminoethyl methacrylate, acrylic acid, dimethylaminopropylmethacrylamide, trimethylammoniumethyl methacrylate chloride, methacrylamide, hydroxyethyl acrylate, and any combination thereof.

3. The relative permeability modifier of claim 1 , wherein the hydrophobically modified hydrophilic monomer is selected from the group consisting of an alkyl acrylate, an alkyl methacrylate, an alkyl acrylamide, and an alkyl methacrylamide, wherein the alkyl radicals have from about 2 to about 25 carbon atoms; alkyl dimethylammoniumethyl methacrylate bromide, alkyl dimethylammoniumethyl methacrylate chloride, and alkyl dimethylammoniumethyl methacrylate iodide, wherein the alkyl radicals have from about 2 to about 25 carbon atoms; alkyl dimethylammonium-propylmethacrylamide bromide, alkyl dimethylammonium propylmethacrylamide chloride, and alkyl dimethylammonium-propylmethacrylamide iodide, wherein the alkyl groups have from about 2 to about 25 carbon atoms; octadecyldimethylammoniumethyl methacrylate bromide; hexadecyldimethyl-ammoniumethyl methacrylate bromide; hexadecyldimethylammoniumpropyl methacrylamide bromide; 2-ethylhexyl methacrylate; hexadecyl methacrylamide; and any combination thereof.

4. A method comprising:
providing a treatment fluid comprising a base fluid and a relative permeability modifier comprising a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer comprises a sulfonate moiety and wherein the subterrean formation is a carbonate formation; and
introducing the treatment fluid into at least a portion of a subterranean formation.

5. The method of claim 4 wherein the base fluid is selected from the group consisting of an aqueous fluid, a non-aqueous fluid, and any combination thereof.

6. The method of claim 4 wherein the hydrophilic monomer is selected from the group consisting of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N-dimethylacrylamide, vinyl pyrrolidone, dimethylaminoethyl methacrylate, acrylic acid, dimethylaminopropylmethacrylamide, trimethylammoniumethyl methacrylate chloride, methacrylamide, hydroxyethyl acrylate, and any combination thereof.

7. The method of claim 4 wherein the hydrophobically modified hydrophilic monomer is selected from the group consisting of an alkyl acrylate, an alkyl methacrylate, an alkyl acrylamide, and an alkyl methacrylamide, wherein the alkyl radicals have from about 2 to about carbon atoms; alkyl dimethylammoniumethyl methacrylate bromide, alkyl dimethylammoniumethyl methacrylate chloride, and alkyl dimethylammoniumethyl methacrylate iodide, wherein the alkyl radicals have from about 2 to about 25 carbon atoms; alkyl dimethylammonium-propylmethacrylamide bromide, alkyl dimethylammonium propylmethacrylamide chloride, and alkyl dimethylammonium-propylmethacrylamide iodide, wherein the alkyl groups have from about 2 to about 25 carbon atoms; octadecyldimethylammoniumethyl methacrylate bromide; hexadecyldimethyl-ammoniumethyl methacrylate bromide; hexadecyldimethylammoniumpropyl methacrylamide bromide; 2-ethylhexyl methacrylate; hexadecyl methacrylamide; and any combination thereof.

8. The method of claim 4 wherein the treatment fluid is introduced into the subterranean formation using one or more pumps.

9. The method of claim 5 wherein the relative permeability modifier is present in the treatment fluid in an amount of from about 100 parts per million to about 15,000 parts per million.

10. The method of claim 4 , wherein the relative permeability modifier comprises the following structure:

wherein X is an integer from 1500 to 20,000, Y is an integer from 25 to 320, Z is an integer from 25 to 430, and n is an integer from 2 to 25.

11. A method comprising:
introducing into at least a portion of a subterranean formation a relative permeability modifier comprising a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer comprises a sulfonate moiety and wherein the subterranean formation is a carbonate formation; and
allowing the relative permeability modifier to attach to adsorption sites on surfaces within the subterranean formation, wherein the relative permeability modifier reduces the water permeability of at least a portion of the subterranean formation.

12. The method of claim 11 wherein the hydrophilic monomer is selected from the group consisting of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N-dimethylacrylamide, vinyl pyrrolidone, dimethylaminoethyl methacrylate, acrylic acid, dimethylaminopropylmethacrylamide, trimethylammoniumethyl methacrylate chloride, methacrylamide, hydroxyethyl acrylate, and any combination thereof.

13. The method of claim 11 wherein the hydrophobically modified hydrophilic monomer is selected from the group consisting of an alkyl acrylate, an alkyl methacrylate, an alkyl acrylamide, and an alkyl methacrylamide, wherein the alkyl radicals have from about 2 to about carbon atoms; alkyl dimethylammoniumethyl methacrylate bromide, alkyl dimethylammoniumethyl methacrylate chloride, and alkyl dimethylammoniumethyl methacrylate iodide, wherein the alkyl radicals have from about 2 to about 25 carbon atoms; alkyl dimethylammonium-propylmethacrylamide bromide, alkyl dimethylammonium propylmethacrylamide chloride, and alkyl dimethylammonium-propylmethacrylamide iodide, wherein the alkyl groups have from about 2 to about 25 carbon atoms; octadecyldimethylammoniumethyl methacrylate bromide; hexadecyldimethyl-ammoniumethyl methacrylate bromide; hexadecyldimethylammoniumpropyl methacrylamide bromide; 2-ethylhexyl methacrylate; hexadecyl methacrylamide; and any combination thereof.

14. The method of claim 11 , wherein the relative permeability modifier comprises the following structure:

wherein X is an integer from 1500 to 20,000, Y is an integer from 25 to 320, Z is an integer from 25 to 430, and n is an integer from 2 to 25.

15. The method of claim 11 , wherein the relative permeability is introduced into the subterranean formation as part of a treatment fluid.

16. The method of claim 15 wherein the treatment fluid comprises an aqueous fluid selected from the group consisting of fresh water, deionized water, brine, seawater, aqueous salt solutions, and any combination thereof.

17. The method of claim 11 further comprising introducing a hydrocarbon liquid or a gas into the subterranean formation.

Assignees

• Halliburton Energy Services Inc

Inventors

• Recio Iii Antonio
• Eoff Larry Steven
• Reddy Baireddy Raghava
• Lewis Christopher Austin

Classifications

• C09K8/82

  Oil-based compositions (C09K8/64 takes precedence) · CPC title

• C08F220/34 Primary

  Esters containing nitrogen {, e.g. N,N-dimethylaminoethyl (meth)acrylate} · CPC title

• C09K8/882 Primary

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C08F2810/10

  including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking · CPC title

• E21B33/138

  Plastering the borehole wall; Injecting into the formation · CPC title