Wellbore servicing materials and methods of making and using same

Patent metadata

Field	Value
Publication number	US-10077397-B2
Application number	US-201615215266-A
Country	US
Kind code	B2
Filing date	Jul 20, 2016
Priority date	May 14, 2013
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A method of servicing a wellbore in a subterranean formation comprising placing a wellbore servicing fluid in the wellbore and/or subterranean formation, wherein the wellbore servicing fluid comprises a hydrophobically modified relative permeability modifier, an oxygenated alkylating agent, and an aqueous base fluid, and allowing the wellbore servicing fluid to modify the permeability of at least a portion of the wellbore and/or subterranean formation.

First claim

What is claimed is:

1. A method of servicing a wellbore in a subterranean formation comprising:
placing a wellbore servicing fluid in the wellbore and/or subterranean formation, wherein the wellbore servicing fluid comprises:
an aqueous base fluid,
a hydrophobically modified relative permeability modifier, and
an oxygenated alkylating agent comprising a compound selected from the group consisting of: a polyethylene oxide, a polyethylene glycol, a polypropylene glycol, an amine, an epoxide, an oxygenated alkyl halide, an oxygenated alkyl sulfonate, an oxygenated alkyl sulfate, a halogenated organic acid, a chloroacetic acid, a chloroacetate ester, a methyl chloroacetate, a chloroacetate salt, a sodium chloroacetate, a carboxylic acid anhydride, a chloroacetic anhydride, an ester, an imide, an amide, an acid halide, derivatives thereof, or combinations thereof, wherein the compound is characterized by the formula R—X where X is a leaving group and R has a molar ratio of carbon-to-oxygen from 5:1 to 1:1; and

allowing the wellbore servicing fluid to modify the permeability of at least a portion of the wellbore and/or subterranean formation.

2. The method of claim 1 wherein the hydrophobically modified relative permeability modifier comprises a water-soluble, hydrophobically modified polymer.

3. The method of claim 2 wherein the water-soluble, hydrophobically modified polymer comprises hydrophobically modified poly(dimethylaminoethyl methacrylate), hydrophobically modified poly(dimethylaminopropyl methacrylamide), poly(alkyldimethylammoniumethyl methacrylate), poly(octadecyldimethylammoniumethyl methacrylate), poly(hexadecyldimethylammoniumethyl methacrylate), poly(octadecyldimethylammoniumethyl methacrylamide), poly(hexadecyldimethylammoniumpropyl methacrylamide), acrylamide/octadecyldimethylammoniumethyl methacrylate bromide copolymer, dimethylaminoethyl methacrylate/vinyl pyrrolidone/hexadecyldimethylammoniumethyl methacrylate bromide terpolymer, acrylamide/2-acrylamido-2-methyl propane sulfonic acid/2-ethylhexyl methacrylate terpolymer, amino methacrylate/alkyl amino methacrylate copolymer, dimethylaminoethyl methacrylate/alkyldimethylammoniumethyl methacrylate copolymer, dimethylaminoethyl methacrylate/hexadecyldimethylammoniumethyl methacrylate copolymer, dimethylaminoethyl methacrylate/hexadecyldimethylammoniumethyl methacrylate bromide copolymer, dimethylammoniumethyl methacrylate/cetyldimethylammoniumethyl methacrylate copolymer, dimethylaminoethyl acrylate/acrylate/alkyldimethylammoniumethyl acrylate copolymer, a compound characterized by Structure I:

or combinations thereof.

4. The method of claim 1 wherein the hydrophobically modified relative permeability modifier comprises a polyelectrolyte.

5. The method of claim 1 wherein the hydrophobically modified relative permeability modifier is present in the wellbore servicing fluid in an amount of from about 0.01 wt. % to about 10 wt. %; the oxygenated alkylating agent is present in the well bore servicing fluid in an amount of from about 0.001 wt. % to about 1 wt. %; and the aqueous base fluid is present in the wellbore servicing fluid in an amount of from about 40 wt. % to about 99.8 wt. %, based on the total weight of the well bore servicing fluid.

6. The method of claim 1 wherein R has a molar ratio of carbon-to-oxygen from 3:1 to 2:1.

7. The method of claim 1 wherein the leaving group comprises a compound selected from the group consisting of: a halide, a chloride, a bromide, an iodide, a sulfonate, a sufonate ester, a toluenesulfonate, a methanesulfonate, a carboxylate group, or combinations thereof.

8. The method of claim 1 wherein the aqueous base fluid comprises a brine.

9. The method of claim 1 wherein the wellbore servicing fluid has a pH of equal to or greater than about 2.

10. The method of claim 1 wherein the wellbore servicing fluid comprises an oxygenated alkylating agent and a hydrophobically modified relative permeability modifier that has a lower critical solution temperature of equal to or greater than about 140° F.

11. The method of claim 1 wherein the wellbore servicing fluid is a fracturing fluid or a gravel packing fluid.

12. The method of claim 1 wherein the hydrophobically modified relative permeability modifier and the oxygenated alkylating agent are pre-reacted prior to formation of the wellbore servicing fluid.

13. The method of claim 12 wherein the pre-reacted hydrophobically modified relative permeability modifier/oxygenated alkylating agent that has a lower critical solution temperature of equal to or greater than about 150° F.

Assignees

• Halliburton Energy Services Inc

Inventors

• Reddy B Raghava
• Eoff Larry S
• Lewis Christopher A
• Pascarella Natalie L

Classifications

• C09K8/5086

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

• C09K8/514

  of natural origin, e.g. polysaccharides, cellulose (C09K8/512 takes precedence) · CPC title

• C09K8/5753

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

• C09K8/602

  containing surfactants · CPC title

• C09K8/68 Primary

  containing organic compounds · CPC title