Wellbore servicing materials and methods of making and using same

Patent metadata

Field	Value
Publication number	US-2016298028-A1
Application number	US-201615187518-A
Country	US
Kind code	A1
Filing date	Jun 20, 2016
Priority date	Apr 4, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

Wellbore servicing fluid are provided that comprise a viscosifying polymeric material, a breaking agent comprising an inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 , and a break rate controlling additive comprising a M(II) soluble salt, a M(II) precipitating salt, a M(II) surface precipitating salt, a M(II) solution precipitating salt, or combinations thereof.

First claim

What is claimed is:

1 . An aqueous based wellbore servicing fluid comprising:
a viscosifying polymeric material, a breaking agent comprising an inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 , and a break rate controlling additive comprising a salt selected from the group consisting of: a M(II) soluble salt, a M(II) precipitating salt, a M(II) surface precipitating salt, a M(II) solution precipitating salt, and any combination thereof.

2 . The wellbore servicing fluid of claim 1 wherein the viscosifying polymeric material is selected from the group consisting of: polysaccharide, a guar, a locust bean gum, a Karaya gum, a gum tragacanth, a hydroxypropyl guar, a carboxymethyl guar, a carboxymethyl hydroxypropyl guar, a hydrophobically modified guar, a high-molecular weight polysaccharide composed of mannose and galactose sugars, a heteropolysaccharide obtained by the fermentation of starch-derived sugars, xanthan, diutan, welan, gellan, scleroglucan, chitosan, dextran, a substituted galactomannan, an unsubstituted galactomannan, a starch, a cellulose, a cellulose ether, a carboxycellulose, a carboxymethyl cellulose, a hydroxyethyl cellulose, a hydroxypropyl cellulose, a carboxyalkylhydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, methyl cellulose, polyacrylic acid, sodium polyacrylate, polyacrylamide, partially hydrolyzed polyacrylamide, polymethacrylamide, poly(acrylamido-2-methyl-propane sulfonate), poly(sodium-2-acrylamide-3-propylsulfonate), polyvinyl alcohol, a copolymer of acrylamide and acrylamido-2-methyl-propane sulfonate, a terpolymer of acrylamido-2-methyl-propane sulfonate, acrylamide and vinylpyrrolidone or itaconic acid, any derivative thereof, and any combination thereof.

3 . The wellbore servicing fluid of claim 1 wherein the viscosifying polymeric material is present in the wellbore servicing fluid in an amount of from about 0.01 wt. % to about 15 wt. %, based on the total weight of the wellbore servicing fluid.

4 . The wellbore servicing fluid of claim 1 further comprising a crosslinker.

5 . The wellbore servicing fluid of claim 4 wherein the crosslinker is selected from the group consisting of: a polyvalent metal ion, an aluminum ion, a zirconium ion, a titanium ion, an antimony ion, a polyvalent metal ion complex, an aluminum complex, a zirconium complex, a titanium complex, an antimony complex, a boron compound, borate, borax, boric acid, calcium borate, magnesium borate, a borate ester, a polyborate, a polymer bound boronic acid, a polymer bound borate, a polyacrylamide bound borate, and any combination thereof.

6 . The wellbore servicing fluid of claim 4 wherein the crosslinker is present in the wellbore servicing fluid in an amount of from about 10 ppm to about 500 ppm, based on the total weight of the wellbore servicing fluid.

7 . The wellbore servicing fluid of claim 1 wherein the inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 is sparingly soluble in water.

8 . The wellbore servicing fluid of claim 1 wherein the inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 comprises a peroxide selected from the group consisting of: MgO 2 , CaO 2 , ZnO 2 , BaO 2 , and any combination thereof.

9 . The wellbore servicing fluid of claim 1 wherein the breaking agent is present in the wellbore servicing fluid in an amount of from about 0.1 pptg to about 50 pptg, based on the volume of the wellbore servicing fluid.

10 . The wellbore servicing fluid of claim 1 wherein the M(II) soluble salt comprises a salt selected from the group consisting of: MgCl 2 , MgBr 2 , MgI 2 , MgSO 4 , CaCl 2 , CaBr 2 , CaI 2 , ZnCl 2 , ZnBr 2 , ZnI 2 , BaCl 2 , BaBr 2 , BaI 2 , SrCl 2 , SrBr 2 , SrI 2 ; Mg(acetate) 2 , Mg(NO 3 ) 2 , Ca(acetate) 2 , Ca(NO 3 ) 2 , Ba(acetate) 2 , Ba(NO 3 ) 2 , Sr(acetate) 2 , Sr(NO 3 ) 2 , and any combination thereof.

11 . The wellbore servicing fluid of claim 1 wherein the M(II) precipitating salt comprises a salt selected from the group consisting of: a phosphate salt, a polyphosphate salt, a carbonate salt, a sulfate salt, an organic phosphate salt, an organic phosphonate salt, an organic carboxylate salt, a fatty acid carboxylate salt, an oxalate salt, and any combination thereof.

12 . The wellbore servicing fluid of claim 1 wherein the break rate controlling additive is present in the wellbore servicing fluid in an amount of from about 1 pptg to about 200 pptg, based on the volume of the wellbore servicing fluid.

13 . The wellbore servicing fluid of claim 1 wherein the wellbore servicing fluid further comprises gravel and is a gravel packing fluid.

14 . The wellbore servicing fluid of claim 1 wherein the wellbore servicing fluid is a fracturing fluid further comprising a proppant.

15 . An aqueous based wellbore servicing fluid comprising:
a viscosifying polymeric material, a breaking agent comprising an inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 , a break rate controlling additive comprising a salt selected from the group consisting of: a M(II) soluble salt, a M(II) precipitating salt, a M(II) surface precipitating salt, a M(II) solution precipitating salt, and any combination thereof, and a crosslinker.

16 . The wellbore servicing fluid of claim 15 wherein the viscosifying polymeric material is present in the wellbore servicing fluid in an amount of from about 0.01 wt. % to about 15 wt. %, based on the total weight of the wellbore servicing fluid.

17 . The wellbore servicing fluid of claim 15 wherein the crosslinker is selected from the group consisting of: a polyvalent metal ion, an aluminum ion, a zirconium ion, a titanium ion, an antimony ion, a polyvalent metal ion complex, an aluminum complex, a zirconium complex, a titanium complex, an antimony complex, a boron compound, borate, borax, boric acid, calcium borate, magnesium borate, a borate ester, a polyborate, a polymer bound boronic acid, a polymer bound borate, a polyacrylamide bound borate, and any combination thereof.

18 . The wellbore servicing fluid of claim 15 wherein the inorganic peroxide of a divalent metal M(II) characterized by the general formula MO 2 comprises a peroxide selected from the group consisting of: MgO 2 , CaO 2 , ZnO 2 , BaO 2 , and any combination thereof.

19 . The wellbore servicing fluid of claim 15 wherein the M(II) soluble salt comprises a salt selected from the group consisting of: MgCl 2 , MgBr 2 , MgI 2 , MgSO 4 , CaCl 2 , CaBr 2 , CaI 2 , ZnCl 2 , ZnBr 2 , ZnI 2 , BaCl 2 , BaBr 2 , BaI 2 , SrCl 2 , SrBr 2 , SrI 2 ; Mg(acetate) 2 , Mg(NO 3 ) 2 , Ca(acetate) 2 , Ca(NO 3 ) 2 , Ba(acetate) 2 , Ba(NO 3 ) 2 , Sr(acetate) 2 , Sr(NO 3 ) 2 , and any combination thereof.

20 . The wellbore servicing fluid of claim 15 wherein the M(II) precipitating salt comprises a salt selected from the group consisting of: a phosphate salt, a polyphosphate salt, a carbonate salt, a sulfate salt, an organic phosphate salt, an organic phosphonate salt, an organic carboxylate salt, a fatty acid carboxylate salt, an oxalate salt, and any combination thereof.

Assignees

• Halliburton Energy Services Inc

Inventors

• Singh Dipti
• Reddy B Raghava
• Holtsclaw Jeremy

Classifications

• C09K8/40

  Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses · CPC title

• C09K2208/26

  Gel breakers other than bacteria or enzymes · CPC title

• C09K8/44

  containing organic binders only · CPC title

• C09K8/905 Primary

  Biopolymers · CPC title

• C09K8/685

  containing cross-linking agents · CPC title