CA2525931A1 - Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants - Google Patents
Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants Download PDFInfo
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- CA2525931A1 CA2525931A1 CA002525931A CA2525931A CA2525931A1 CA 2525931 A1 CA2525931 A1 CA 2525931A1 CA 002525931 A CA002525931 A CA 002525931A CA 2525931 A CA2525931 A CA 2525931A CA 2525931 A1 CA2525931 A1 CA 2525931A1
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- graft copolymer
- cement
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- 238000000034 method Methods 0.000 title claims abstract 36
- 239000002270 dispersing agent Substances 0.000 title claims abstract 7
- 239000004568 cement Substances 0.000 claims abstract 34
- 229920000578 graft copolymer Polymers 0.000 claims abstract 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 15
- 150000003839 salts Chemical class 0.000 claims abstract 13
- 239000004952 Polyamide Substances 0.000 claims abstract 12
- 229920002647 polyamide Polymers 0.000 claims abstract 12
- 239000002253 acid Substances 0.000 claims abstract 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract 7
- 150000001299 aldehydes Chemical class 0.000 claims abstract 7
- 239000011396 hydraulic cement Substances 0.000 claims abstract 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract 7
- 239000011593 sulfur Substances 0.000 claims abstract 7
- 150000007513 acids Chemical class 0.000 claims abstract 3
- 239000002002 slurry Substances 0.000 claims abstract 3
- 239000000203 mixture Substances 0.000 claims 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims 4
- 108010010803 Gelatin Proteins 0.000 claims 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 4
- 239000011398 Portland cement Substances 0.000 claims 4
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 claims 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 4
- 150000001875 compounds Chemical class 0.000 claims 4
- 229920000159 gelatin Polymers 0.000 claims 4
- 239000008273 gelatin Substances 0.000 claims 4
- 235000019322 gelatine Nutrition 0.000 claims 4
- 235000011852 gelatine desserts Nutrition 0.000 claims 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims 4
- 150000002576 ketones Chemical class 0.000 claims 4
- 150000007974 melamines Chemical class 0.000 claims 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims 4
- KCZIUKYAJJEIQG-UHFFFAOYSA-N 1,3,5-triazin-2-amine Chemical class NC1=NC=NC=N1 KCZIUKYAJJEIQG-UHFFFAOYSA-N 0.000 claims 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims 2
- 102000009027 Albumins Human genes 0.000 claims 2
- 108010088751 Albumins Proteins 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 2
- 108010076119 Caseins Proteins 0.000 claims 2
- 102000008186 Collagen Human genes 0.000 claims 2
- 108010035532 Collagen Proteins 0.000 claims 2
- 229920000877 Melamine resin Polymers 0.000 claims 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims 2
- 229920000805 Polyaspartic acid Polymers 0.000 claims 2
- 108010073771 Soybean Proteins Proteins 0.000 claims 2
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 claims 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 239000007864 aqueous solution Substances 0.000 claims 2
- -1 aromatic alcohols Chemical class 0.000 claims 2
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims 2
- 229940092714 benzenesulfonic acid Drugs 0.000 claims 2
- 239000011230 binding agent Substances 0.000 claims 2
- 239000008280 blood Substances 0.000 claims 2
- 210000004369 blood Anatomy 0.000 claims 2
- 210000000988 bone and bone Anatomy 0.000 claims 2
- 239000005018 casein Substances 0.000 claims 2
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims 2
- 235000021240 caseins Nutrition 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 229920001436 collagen Polymers 0.000 claims 2
- 239000007857 degradation product Substances 0.000 claims 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims 2
- 239000013505 freshwater Substances 0.000 claims 2
- 229940015043 glyoxal Drugs 0.000 claims 2
- 238000010559 graft polymerization reaction Methods 0.000 claims 2
- 239000010440 gypsum Substances 0.000 claims 2
- 229910052602 gypsum Inorganic materials 0.000 claims 2
- 229940079826 hydrogen sulfite Drugs 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 2
- 229920002866 paraformaldehyde Polymers 0.000 claims 2
- SQYNKIJPMDEDEG-UHFFFAOYSA-N paraldehyde Chemical compound CC1OC(C)OC(C)O1 SQYNKIJPMDEDEG-UHFFFAOYSA-N 0.000 claims 2
- 229960003868 paraldehyde Drugs 0.000 claims 2
- 108010064470 polyaspartate Proteins 0.000 claims 2
- 229940107700 pyruvic acid Drugs 0.000 claims 2
- 239000000377 silicon dioxide Substances 0.000 claims 2
- 239000002893 slag Substances 0.000 claims 2
- 235000010265 sodium sulphite Nutrition 0.000 claims 2
- 239000002904 solvent Substances 0.000 claims 2
- 229940001941 soy protein Drugs 0.000 claims 2
- 238000007669 thermal treatment Methods 0.000 claims 2
- 150000003672 ureas Chemical class 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/287—Polyamides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/30—Condensation polymers of aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0059—Graft (co-)polymers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0072—Biodegradable materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0074—Anti-static agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The present invention provides methods of cementing subterranean zones penetrated by well bores using biodegradable dispersants. A cement compositi on of the invention comprises a hydraulic cement, sufficient water to form a slurry and a water soluble biodegradable cement dispersant comprising a polyamide graft copolymer containing at least one side chain formed from aldehydes and sulfur-containing acids or their salts.
Claims (34)
1. A method of cementing a subterranean zone penetrated by a well bore comprising the steps of:
preparing or providing a cement composition that comprises a hydraulic cement, sufficient water to form a slurry and a polyamide graft copolymer comprising at least one side chain formed from aldehydes and sulfur-containing acids or their salts;
placing the cement composition in the subterranean zone to be cemented; and allowing the cement composition to set therein.
preparing or providing a cement composition that comprises a hydraulic cement, sufficient water to form a slurry and a polyamide graft copolymer comprising at least one side chain formed from aldehydes and sulfur-containing acids or their salts;
placing the cement composition in the subterranean zone to be cemented; and allowing the cement composition to set therein.
2. The method of claim 1 wherein the polyamide component of the graft copolymer is a natural polyamide selected from the group consisting of casein, gelatin, soy protein, polyaspartic acid, collagens, bone binders, blood albumins, and their degradation products.
3. The method of claim 1 wherein the aldehyde component of the graft copolymer is selected from the group consisting of paraformaldehyde, paraldehyde, formaldehyde, acetaldehyde, and glyoxal.
4. The method of claim 1 wherein the sulfur containing acid or salt component of the graft copolymer is selected from the group consisting of inorganic sulfite salts, hydrogen sulfite, bisulfites of alkaline earth metals, aluminum, iron and ammonium, napthalenesulfonic acid and its salts, and benzenesulfonic acid and its salts.
5. The method of claim 1 wherein the side chain further comprises at least one compound selected from the group consisting of ketones, aromatic alcohols and aminoplastic-forming agents such as dicyanodiamide, urea derivatives, amino-s-triazines, melamines, and melamine derivatives.
6. The method of claim 5 wherein the ketones are selected from the group consisting acetone, 2-propanone, 2-butanone, and pyruvic acid.
7. The method of claim 1 wherein the polyamide component of the graft copolymer is present therein in an amount in the range of from about 5% to about 80% by weight.
8. The method of claim 1 wherein the aldehyde component of the graft copolymer is present therein in an amount in the range of from about 5% to about 90% by weight.
9. The method of claim 1 wherein the sulfur containing acid or salt thereof component of the graft copolymer is present therein in an amount in the range of from about 5% to about 60% by weight.
10. The method of claim 5 wherein the compound is present in the graft copolymer in an amount in the range of from about 5% to about 85% by weight.
11. The method of claim 1 wherein the polyamide graft copolymer is prepared by graft polymerization at temperatures between -10°C and 250°C in the presence of a solvent such as water or dimethyl sulfoxide, or by thermal treatment.
12. The method of claim 1 wherein the polyamide graft copolymer comprises gelatin present in an amount of about 42% by weight, a 30% by weight aqueous solution of formaldehyde present in an amount of about 22% by weight, sodium sulfite present in an amount of about 18% by weight, and acetone present in an amount of about 18%
by weight.
by weight.
13. The method of claim 1 wherein the hydraulic cement in the cement composition is selected from the group consisting of Portland cements, slag cements, pozzolana cements, gypsum cements, aluminous cements, and silica cements.
14. The method of claim 1 wherein the hydraulic cement is Portland cement.
15. The method of claim 1 wherein the water in the cement composition is selected from the group consisting of fresh water and salt water.
16. The method of claim 1 wherein the water is present in the cement composition in an amount in the range of from about 30% to about 63% by weight of cement therein.
17 17. The method of claim 1 wherein the polyamide graft copolymer is present in the cement composition in an amount in the range of from about 0.25% to about 5% by weight of cement therein.
18. A method of cementing a subterranean zone penetrated by a well bore comprising the steps of:
preparing or providing a cement composition that comprises a hydraulic cement, sufficient water to form a slurry and a water soluble biodegradable cement dispersant comprising a polyamide graft copolymer containing at least one side chain formed from aldehydes and sulfur-containing acids or their salts;
placing the cement compositions in the subterranean zone to be cemented; and allowing the cement composition to set into a solid mass therein.
preparing or providing a cement composition that comprises a hydraulic cement, sufficient water to form a slurry and a water soluble biodegradable cement dispersant comprising a polyamide graft copolymer containing at least one side chain formed from aldehydes and sulfur-containing acids or their salts;
placing the cement compositions in the subterranean zone to be cemented; and allowing the cement composition to set into a solid mass therein.
19. The method of claim 18 wherein the polyamide component of the graft copolymer is a natural polyamide selected from the group consisting of casein, gelatin, soy protein, polyaspartic acid, collagens, bone binders, blood albumins, and their degradation products.
20. The method of claim 18 wherein the aldehyde component of the graft copolymer is selected from the group consisting of paraformaldehyde, paraldehyde, formaldehyde, acetaldehyde, and glyoxal.
21. The method of claim 18 wherein the sulfur containing acid or salt component of the graft copolymer is selected from the group consisting of inorganic sulfite salts, hydrogen sulfite, bisulfites of alkaline earth metals, aluminum, iron and ammonium, napthalenesulfonic acid and its salts, and benzenesulfonic acid and its salts.
22. The method of claim 18 wherein the side chain further comprises at least one compound selected from the group consisting of ketones, aromatic alcohols and aminoplastic-forming agents such as dicyanodiamide, urea derivatives, amino-s-triazines, melamines, and melamine derivatives.
23. The method of claim 22 wherein the ketones are selected from the group consisting acetone, 2-propanone, 2-butanone, and pyruvic acid.
24. The method of claim 18 wherein the polyamide component of the graft copolymer is present therein in an amount in the range of from about 5% to about 80% by weight.
25. The method of claim 18 wherein the aldehyde component of the graft copolymer is present therein in an amount in the range of from about 5% to about 90% by weight.
26. The method of claim 18 wherein the sulfur containing acid or salt thereof component of the graft copolymer is present therein in an amount in the range of from about 5% to about 60% by weight.
27. The method of claim 22 wherein the compound is present in the graft copolymer in an amount in the range of from about 5% to about 85% by weight.
28. The method of claim 18 wherein the water soluble biodegradable cement dispersant is prepared by graft polymerization at temperatures between -10°C and 250°C in the presence of a solvent such as water or dimethyl sulfoxide, or by thermal treatment.
29. The method of claim 18 wherein the biodegradable graft copolymer cement dispersant is comprises gelatin present in an amount of about 42% by weight, a
30% by weight aqueous solution of formaldehyde present in an amount of about 22% by weight, sodium sulfite present in an amount of about 18% by weight, and acetone present in an amount of about 18% by weight.
30. The method of claim 18 wherein the hydraulic cement in the cement composition is selected from the group consisting of Portland cements, slag cements, pozzolana cements, gypsum cements, aluminous cements, and silica cements.
30. The method of claim 18 wherein the hydraulic cement in the cement composition is selected from the group consisting of Portland cements, slag cements, pozzolana cements, gypsum cements, aluminous cements, and silica cements.
31. The method of claim 18 wherein the hydraulic cement is Portland cement.
32. The method of claim 18 wherein the water in the cement composition is selected from the group consisting of fresh water and salt water.
33. The method of claim 18 wherein the water is present in the cement composition in an amount in the range of from about 30% to about 63% by weight of cement therein.
34. The method of claim 18 wherein the water soluble biodegradable graft copolymer cement dispersant is present in the cement composition in an amount in the range of from about 0.25% to about 5% by weight of cement therein.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/439,491 | 2003-05-16 | ||
US10/439,491 US6681856B1 (en) | 2003-05-16 | 2003-05-16 | Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants |
PCT/GB2003/005118 WO2004101953A1 (en) | 2003-05-16 | 2003-11-25 | Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2525931A1 true CA2525931A1 (en) | 2004-11-25 |
CA2525931C CA2525931C (en) | 2010-06-08 |
Family
ID=30116126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2525931A Expired - Lifetime CA2525931C (en) | 2003-05-16 | 2003-11-25 | Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants |
Country Status (8)
Country | Link |
---|---|
US (1) | US6681856B1 (en) |
EP (1) | EP1625278B1 (en) |
AR (1) | AR042483A1 (en) |
AU (1) | AU2003304123A1 (en) |
CA (1) | CA2525931C (en) |
DK (1) | DK1625278T3 (en) |
NO (1) | NO20055412L (en) |
WO (1) | WO2004101953A1 (en) |
Families Citing this family (149)
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US7168489B2 (en) * | 2001-06-11 | 2007-01-30 | Halliburton Energy Services, Inc. | Orthoester compositions and methods for reducing the viscosified treatment fluids |
US7080688B2 (en) * | 2003-08-14 | 2006-07-25 | Halliburton Energy Services, Inc. | Compositions and methods for degrading filter cake |
US7276466B2 (en) * | 2001-06-11 | 2007-10-02 | Halliburton Energy Services, Inc. | Compositions and methods for reducing the viscosity of a fluid |
US7140438B2 (en) * | 2003-08-14 | 2006-11-28 | Halliburton Energy Services, Inc. | Orthoester compositions and methods of use in subterranean applications |
US7343973B2 (en) * | 2002-01-08 | 2008-03-18 | Halliburton Energy Services, Inc. | Methods of stabilizing surfaces of subterranean formations |
US6962200B2 (en) * | 2002-01-08 | 2005-11-08 | Halliburton Energy Services, Inc. | Methods and compositions for consolidating proppant in subterranean fractures |
US7216711B2 (en) * | 2002-01-08 | 2007-05-15 | Halliburton Eenrgy Services, Inc. | Methods of coating resin and blending resin-coated proppant |
US7267171B2 (en) * | 2002-01-08 | 2007-09-11 | Halliburton Energy Services, Inc. | Methods and compositions for stabilizing the surface of a subterranean formation |
US6691780B2 (en) * | 2002-04-18 | 2004-02-17 | Halliburton Energy Services, Inc. | Tracking of particulate flowback in subterranean wells |
US6705400B1 (en) * | 2002-08-28 | 2004-03-16 | Halliburton Energy Services, Inc. | Methods and compositions for forming subterranean fractures containing resilient proppant packs |
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AR042483A1 (en) | 2005-06-22 |
AU2003304123A1 (en) | 2004-12-03 |
EP1625278B1 (en) | 2011-12-21 |
NO20055412L (en) | 2006-02-16 |
WO2004101953A1 (en) | 2004-11-25 |
NO20055412D0 (en) | 2005-11-16 |
CA2525931C (en) | 2010-06-08 |
US6681856B1 (en) | 2004-01-27 |
EP1625278A1 (en) | 2006-02-15 |
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