CA2595686A1 - Soluble diverting agents - Google Patents
Soluble diverting agents Download PDFInfo
- Publication number
- CA2595686A1 CA2595686A1 CA002595686A CA2595686A CA2595686A1 CA 2595686 A1 CA2595686 A1 CA 2595686A1 CA 002595686 A CA002595686 A CA 002595686A CA 2595686 A CA2595686 A CA 2595686A CA 2595686 A1 CA2595686 A1 CA 2595686A1
- Authority
- CA
- Canada
- Prior art keywords
- diverting
- poly
- oxide
- water
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- -1 poly(alkylene) Polymers 0.000 claims abstract 21
- 239000000463 material Substances 0.000 claims abstract 18
- 238000000034 method Methods 0.000 claims abstract 17
- 239000012530 fluid Substances 0.000 claims abstract 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract 11
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract 7
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract 6
- 239000011248 coating agent Substances 0.000 claims abstract 6
- 238000000576 coating method Methods 0.000 claims abstract 6
- 239000000203 mixture Substances 0.000 claims abstract 6
- 229920001484 poly(alkylene) Polymers 0.000 claims abstract 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims abstract 6
- 102000008186 Collagen Human genes 0.000 claims abstract 5
- 108010035532 Collagen Proteins 0.000 claims abstract 5
- 229920001436 collagen Polymers 0.000 claims abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 5
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract 4
- 230000000638 stimulation Effects 0.000 claims abstract 3
- 239000007788 liquid Substances 0.000 claims 11
- 238000005755 formation reaction Methods 0.000 claims 10
- 229920000642 polymer Polymers 0.000 claims 9
- 229920003169 water-soluble polymer Polymers 0.000 claims 9
- 239000000758 substrate Substances 0.000 claims 5
- 239000000243 solution Substances 0.000 claims 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 2
- 229910052783 alkali metal Inorganic materials 0.000 claims 2
- 150000001340 alkali metals Chemical class 0.000 claims 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims 2
- 239000011260 aqueous acid Substances 0.000 claims 2
- 239000008365 aqueous carrier Substances 0.000 claims 2
- 229920001400 block copolymer Polymers 0.000 claims 2
- 239000012267 brine Substances 0.000 claims 2
- 229920000578 graft copolymer Polymers 0.000 claims 2
- 229920000126 latex Polymers 0.000 claims 2
- 239000004816 latex Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 230000000737 periodic effect Effects 0.000 claims 2
- 229920000058 polyacrylate Polymers 0.000 claims 2
- 229920000728 polyester Polymers 0.000 claims 2
- 229920001155 polypropylene Polymers 0.000 claims 2
- 229920001451 polypropylene glycol Polymers 0.000 claims 2
- 238000005086 pumping Methods 0.000 claims 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 2
- 102000012422 Collagen Type I Human genes 0.000 claims 1
- 108010022452 Collagen Type I Proteins 0.000 claims 1
- 102000000503 Collagen Type II Human genes 0.000 claims 1
- 108010041390 Collagen Type II Proteins 0.000 claims 1
- 102000001187 Collagen Type III Human genes 0.000 claims 1
- 108010069502 Collagen Type III Proteins 0.000 claims 1
- 102000004266 Collagen Type IV Human genes 0.000 claims 1
- 108010042086 Collagen Type IV Proteins 0.000 claims 1
- 102000012432 Collagen Type V Human genes 0.000 claims 1
- 108010022514 Collagen Type V Proteins 0.000 claims 1
- 150000001718 carbodiimides Chemical class 0.000 claims 1
- 239000000919 ceramic Substances 0.000 claims 1
- 239000003431 cross linking reagent Substances 0.000 claims 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 1
- 239000012948 isocyanate Substances 0.000 claims 1
- 150000002513 isocyanates Chemical class 0.000 claims 1
- 229920003986 novolac Polymers 0.000 claims 1
- 239000003129 oil well Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 239000012466 permeate Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920003987 resole Polymers 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000004936 stimulating effect Effects 0.000 abstract 1
- 239000003180 well treatment fluid Substances 0.000 abstract 1
Classifications
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- C09K8/805—Coated proppants
-
- 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
- C09K8/467—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 containing additives for specific purposes
- C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/261—Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Medicinal Preparation (AREA)
- Biological Depolymerization Polymers (AREA)
- Materials For Medical Uses (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Peptides Or Proteins (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Methods and compositions for stimulating single and multiple intervals in subterranean wells by diverting well treatment fluids into a particular direction or into multiple intervals using water soluble coated diverting agents are described. The water soluble coating of the diverting material is preferably a collagen, poly(alkylene) oxide, poly(lactic acid), polyvinylacetate, polyvinylalcohol, polyvinylacetate/polyvinylalcohol polymer or a mixture thereof applied as a coating on any number of proppants. The method allows for the diverting of the flow of fluids in a downhole formation during a well treatment, such as during a fracturing process. Following completion of a treatment such as a hydraulic stimulation, the soluble diverting agent can be dissolved and removed by the water component of the well production.
Claims (27)
1. A diverting material comprising:
a particulate substrate; and a water-soluble polymer coating, wherein the water-soluble polymer coating forms a substantial outer coating on the particulate substrate.
a particulate substrate; and a water-soluble polymer coating, wherein the water-soluble polymer coating forms a substantial outer coating on the particulate substrate.
2. The diverting material of claim 1, wherein the particulate substrate is selected from the group consisting of natural materials, silica proppants, ceramic proppants, metallic proppants, synthetic organic proppants, and mixtures thereof.
3. The diverting material of claim 1, wherein the particulate substrate is a resin coated proppant.
4. The diverting material of claim 1, wherein the water-soluble polymer is collagen, poly(alkylene) oxide, poly(lactic acid), polyvinylacetate, polyvinylalcohol, polylactone, polyacrylate, latex, polyester, periodic chart elements of group I or II
(alkali metal or alkaline earth metal) silicate polymers or admixtures thereof.
(alkali metal or alkaline earth metal) silicate polymers or admixtures thereof.
5. The diverting material of claim 1, wherein the particulate substrate has a particle size of from about 3 mesh to about 200 mesh.
6. The diverting material of claim 4, wherein the collagen is Type I collagen, Type II
collagen, Type III collagen, Type IV collagen, or Type V collagen.
collagen, Type III collagen, Type IV collagen, or Type V collagen.
7. The diverting material of claim 4, wherein the water-soluble collagen is crosslinked with a cross-linking agent selected from the group consisting of aldehydes, carbodiimides, isocyanates, and acyl azides.
8. The diverting material of claim 1, further comprising a non-water-soluble polymer in combination with the water-soluble polymer coating.
9. The diverting material of claim 8, wherein the non water-soluble polymer is phenol-aldehyde novolac polymers and phenol-aldehyde resole polymers.
10. The diverting material of claim 1, wherein the water-soluble polymer is poly(alkylene) oxide, poly(lactic acid), polyvinylacetate, polyvinylalcohol, polyvinylacetate/polyvinylalcohol graft polymers or admixtures thereof.
11. The diverting material of claim 10, wherein the poly(alkylene) oxide is poly(ethylene) oxide, poly(propylene) oxide, poly (ethylene oxide)-poly (propylene oxide) block copolymers, or mixtures thereof.
12. A diverting fluid for diverting oil well treating liquids to progressively less permeable portions of a subterranean formation, said fluid comprising:
an aqueous carrier liquid having dispersed therein particulate diverting material of any one of claims 1-11.
an aqueous carrier liquid having dispersed therein particulate diverting material of any one of claims 1-11.
13. The diverting fluid of claim 12, wlierein the particulate diverting material comprises varying densities greater or less than the density of the carrier fluid.
14. The diverting fluid of claim 12, wherein the diverting material is present in the carrier liquid in an amount from about 0.001 pounds per gallon to about 10 pounds per gallon of the carrier liquid.
15. The diverting fluid of claim 12, wherein the carrier liquid is water, brine, aqueous acid solutions, or gelled acid solutions.
16. A method of treating a subterranean formation during fracturing treatment so as to increase the stimulation of the subterranean formation, the method comprising:
pumping into the subterranean formation a diverting fluid of any one of claims 12-15 ;
allowing the carrier liquid to permeate into the formation so as to carry the diverting material into the subterranean formation; and allowing the diverting material to plug porous portions of the formations thereby diverting flow of treating fluid to less permeable portions of the formation.
pumping into the subterranean formation a diverting fluid of any one of claims 12-15 ;
allowing the carrier liquid to permeate into the formation so as to carry the diverting material into the subterranean formation; and allowing the diverting material to plug porous portions of the formations thereby diverting flow of treating fluid to less permeable portions of the formation.
17. The method of claim 16, wherein the formation has a temperature from about 75 °F to about 400 °F.
18. The method of claim 16, wherein the treating of the subterranean formation is a fracturing treatment, and wherein the stimulation increased is the length of the fractures.
19. A method treating a cased wellbore to divert flow of fluids from one zone to another, the method comprising:
pumping into said wellbore a diverting fluid comprising an aqueous carrier liquid having dispersed therein a particulate form of a water soluble polymer, wherein the particulate polymer has a density greater than or less than the density of the carrier liquid;
allowing the particulate polymer to divert flow of a treating fluid from one zone to another.
pumping into said wellbore a diverting fluid comprising an aqueous carrier liquid having dispersed therein a particulate form of a water soluble polymer, wherein the particulate polymer has a density greater than or less than the density of the carrier liquid;
allowing the particulate polymer to divert flow of a treating fluid from one zone to another.
20. The method of claim 19, wherein the treating fluid is diverted to flow into a zone of higher pore pressure or lower permeability.
21. The method of claim 19, wherein the wellbore has a temperature from about 75 °F to about 400 °F.
22. The method of claim 19, wherein the water-soluble polymer is collagen, poly(alkylene) oxide, poly(lactic acid), polyvinylacetate, polyvinylalcohol, polylactone, polyacrylate, latex, polyester, polyvinylacetate/polyvinylalcohol graft polymer, periodic chart elements of group I or II (alkali metal or alkaline earth metal) silicate polymer, or mixtures thereof.
23. The method of claim 19, wherein the particulate polymer has a particle size of from about 3 mesh to about 70 mesh.
24. The method of claim 22, wherein the poly(alkylene) oxide is poly(ethylene) oxide, poly(propylene) oxide, poly (ethylene oxide)-poly (propylene oxide) block copolymers, or mixtures thereof.
25. The method of claim 19, wherein the particulate polymer is comprised of varying densities greater or less than the density of the carrier fluid.
26. The method of claim 19, wherein the particulate polymer is present in the carrier liquid in an amount from about 0.001 pounds per gallon to about 10 pounds per gallon of the carrier liquid.
27. The method of claim 19, wherein the carrier liquid is water, brine, aqueous acid solutions, or gelled acid solutions.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US64623105P | 2005-01-21 | 2005-01-21 | |
| US60/646,231 | 2005-01-21 | ||
| PCT/US2006/001916 WO2006088603A1 (en) | 2005-01-21 | 2006-01-20 | Soluble diverting agents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2595686A1 true CA2595686A1 (en) | 2006-08-24 |
| CA2595686C CA2595686C (en) | 2012-09-18 |
Family
ID=36590218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2595686A Active CA2595686C (en) | 2005-01-21 | 2006-01-20 | Soluble diverting agents |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060175059A1 (en) |
| CN (1) | CN101146888B (en) |
| CA (1) | CA2595686C (en) |
| GB (1) | GB2437869B (en) |
| MX (1) | MX2007008850A (en) |
| NO (1) | NO20074239L (en) |
| RU (1) | RU2433157C2 (en) |
| WO (1) | WO2006088603A1 (en) |
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| CN101146888B (en) | 2012-08-08 |
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| US20060175059A1 (en) | 2006-08-10 |
| CN101146888A (en) | 2008-03-19 |
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