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US 11,359,128 B2Granted
Cementing compositions and methods
AssigneeHalliburton Energy Services, Inc.
InventorsGary P. Funkhouser, Paul Joseph Jones, Greg Robert Hundt
Life of this patent
Estimating the term…
Abstract
Cementing compositions including a di- or poly epoxide resin, and amine hardener, and a di- or polyfunctional alkylphosphonate ester fortifier and methods of using the cementing compositions such as in a subterranean zone penetrated by a well bore.
Claims14
An epoxide resin cementing composition for use in a subterranean well, the composition comprising:
- (a) a di- or poly epoxide resin;
- (b) polyoxypropylenediamine, wherein the polyoxypropylenediamine is present from 5 wt % to 15 wt % based on the total weight of the composition;
- and
- (c) a di- or polyfunctional alkylphosphonate ester fortifier, wherein the fortifier is present from 3 wt % to 15 wt % based on the total weight of the composition;
- wherein the di- or polyfunctional alkylphosphonate ester is one or more compounds selected from the group consisting of:
- hexa(methyl or ethyl) 1,2,3-propanetriyltrisphosphonate;
- tetra(methyl or ethyl) 1,x-phenylenebis(methylene)diphosphonate, wherein x=2-4;
- tetra(methyl or ethyl) 1,x-naphthalenediylbis(methylene)diphosphonate, wherein x=2-8;
- tetra(methyl or ethyl) 2,x-pyridinediylbis(methylene)diphosphonate, wherein x=3-6;
- tetra(methyl or ethyl) 2,5-furandiylbis(methylene)diphosphonate;
- tetra(methyl or ethyl) 3-alkyl-2,5-furandiylbis (methylene) diphosphonate;
- and
- tetra(methyl or ethyl) 3-alkyl-2,5-thiophenediylbis (methylene) diphosphonate
- (d) a density modifier;
- wherein the glass transition temperature of the composition is increased by the presence of the fortifier from 15° F. to 50° F. compared to the identical composition without the fortifier, and
- wherein the composition has a viscosity of at least 5 Bc to 90 Bc prior to curing, and
- wherein the composition does not comprise any Portland cement.
14 more elements
An epoxide resin cement composition for use in a subterranean well, the composition comprising:
- (a) 30 wt. % to 90 wt. %, based on the total weight of the composition, of a bisphenol A diglycidyl ether resin and/or a cyclohexanedimethanol diglycidyl ether;
- (b) 5 wt. % to 15 wt. %, based on the total weight of component (a), of polyoxypropylenediamine;
- (c) 3 wt % to 15 wt % based on the total weight of the composition, of one or more di- or polyfunctional alkylphosphonate esters selected from the group consisting of:
- hexa(methyl or ethyl) 1,2,3-propanetriyltrisphosphonate;
- tetra(methyl or ethyl) 1,x-phenylenebis(methylene)diphosphonate, wherein x=2-4;
- tetra(methyl or ethyl) 1,x-naphthalenediylbis(methylene)diphosphonate, wherein x=2-8;
- tetra(methyl or ethyl) 2,x-pyridinediylbis(methylene)diphosphonate, wherein x=3-6;
- tetra(methyl or ethyl) 2,5-furandiylbis(methylene)diphosphonate;
- tetra(methyl or ethyl) 3-alkyl-2,5-furandiylbis(methylene)diphosphonate;
- and
- tetra(methyl or ethyl) 3-alkyl-2,5-thiophenediylbis(methylene)diphosphonate;
- (d) a density modifier;
- (e) optionally a silane coupling agent;
- and
- (f) optionally a diluent,
- wherein the glass transition temperature of the composition is increased by the presence of the fortifier from 15° F. to 50° F. compared to the identical composition without the fortifier, and
- wherein the composition has a viscosity of at least 5 Bc to 90 Bc prior to curing, and
- wherein the composition does not comprise any Portland cement.
15 more elements
A method of increasing the Tg of a cured cement, plug, or seal used in a subterranean zone penetrated by a well bore comprising:
- (a) dissolving a di- or polyfunctional alkylphosphonate ester fortifier in a di- or poly epoxide resin;
- (b) adding polyoxypropylenediamine to the di- or poly epoxide resin having the di- or polyfunctional alkylphosphonate ester fortifier dissolved therein to form an uncured composition, wherein the polyoxypropylenediamine is present from 5 wt % to 15 wt % based on the total weight of the composition;
- (c) pumping the uncured composition into a subterranean zone penetrated by a well bore;
- and
- (d) allowing the uncured composition to cure and form a cured cement, plug, or seal having a Tg higher than an otherwise identical cured cement, plug, or seal formed without addition of the di- or polyfunctional alkylphosphonate ester fortifier.
2 more elements
Dependencies are inferred from the claim text.