CA2684230A1 - Water flooding method for secondary hydrocarbon recovery - Google Patents
Water flooding method for secondary hydrocarbon recovery Download PDFInfo
- Publication number
- CA2684230A1 CA2684230A1 CA2684230A CA2684230A CA2684230A1 CA 2684230 A1 CA2684230 A1 CA 2684230A1 CA 2684230 A CA2684230 A CA 2684230A CA 2684230 A CA2684230 A CA 2684230A CA 2684230 A1 CA2684230 A1 CA 2684230A1
- Authority
- CA
- Canada
- Prior art keywords
- water flooding
- mobility
- flooding composition
- percent
- thickening polymer
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract 82
- 238000000034 method Methods 0.000 title claims abstract 50
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract 40
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract 40
- 125000001183 hydrocarbyl group Chemical group 0.000 title claims abstract 4
- 238000011084 recovery Methods 0.000 title claims abstract 4
- 239000000203 mixture Substances 0.000 claims abstract 77
- 229920000642 polymer Polymers 0.000 claims abstract 36
- 230000008719 thickening Effects 0.000 claims abstract 30
- 230000002209 hydrophobic effect Effects 0.000 claims abstract 13
- 239000003607 modifier Substances 0.000 claims abstract 13
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract 6
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract 6
- -1 alkyl hydrocarbon Chemical class 0.000 claims abstract 6
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract 6
- 239000000463 material Substances 0.000 claims abstract 6
- 238000006467 substitution reaction Methods 0.000 claims abstract 6
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract 4
- 150000002430 hydrocarbons Chemical class 0.000 claims 30
- 238000011144 upstream manufacturing Methods 0.000 claims 8
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 230000035699 permeability Effects 0.000 claims 4
- 239000012267 brine Substances 0.000 claims 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 3
- 239000000243 solution Substances 0.000 claims 3
- NKVCYHYQKKNFJI-UHFFFAOYSA-N 2-(hexacosan-13-yloxymethyl)oxirane Chemical compound CCCCCCCCCCCCCC(CCCCCCCCCCCC)OCC1CO1 NKVCYHYQKKNFJI-UHFFFAOYSA-N 0.000 claims 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 2
- 239000011780 sodium chloride Substances 0.000 claims 1
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Geochemistry & Mineralogy (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
A water flooding composition in a method of secondary hydrocarbon recovery.
The water flooding composition includes water and a thickening polymer. The thickening polymer includes a hydroxyethyl cellulose backbone polymer having a molecular weight of between about 1,000,000 and about 2,000,000 and a hydrophobic modifier. The hydrophobic modifier has a substitution level in the thickening polymer of between about 0.1 percent and about 2 percent by weight of the thickening polymer. The hydrophobic modifier is an alkyl hydrocarbon based material containing between about 10 and about 24 unsubstituted carbon atoms per group. The thickening polymer has a concentration in the water flooding composition of between about 0.01 percent and about 1 percent by weight of the water flooding composition. The water flooding composition is formulated within these ranges so that the water flooding composition has a suitable viscosity/mobility and so that the water flooding composition is injectable.
The water flooding composition includes water and a thickening polymer. The thickening polymer includes a hydroxyethyl cellulose backbone polymer having a molecular weight of between about 1,000,000 and about 2,000,000 and a hydrophobic modifier. The hydrophobic modifier has a substitution level in the thickening polymer of between about 0.1 percent and about 2 percent by weight of the thickening polymer. The hydrophobic modifier is an alkyl hydrocarbon based material containing between about 10 and about 24 unsubstituted carbon atoms per group. The thickening polymer has a concentration in the water flooding composition of between about 0.01 percent and about 1 percent by weight of the water flooding composition. The water flooding composition is formulated within these ranges so that the water flooding composition has a suitable viscosity/mobility and so that the water flooding composition is injectable.
Claims (45)
1. In a method of secondary hydrocarbon recovery of a type which comprises passing a water flooding composition through a subterranean formation containing a hydrocarbon deposit, the method characterized by the water flooding composition being comprised of water and a thickening polymer, the thickening polymer having a concentration of between 0.01 percent and 1 percent by weight of the water flooding composition, the thickening polymer comprising:
(a) a hydroxyethyl cellulose backbone polymer having a molecular weight of between 1,000,000 and 2,000,000; and (b) a hydrophobic modifier in a substitution level in the thickening polymer of between 0.1 percent and 2 percent by weight of the thickening polymer, wherein the hydrophobic modifier is comprised of an alkyl hydrocarbon based material containing between 10 and 24 unsubstituted carbon atoms per group;
wherein the water flooding composition is formulated to have a viscosity of between 2 mPa.s and 100 mPa.s and to be injectable into the subterranean formation.
(a) a hydroxyethyl cellulose backbone polymer having a molecular weight of between 1,000,000 and 2,000,000; and (b) a hydrophobic modifier in a substitution level in the thickening polymer of between 0.1 percent and 2 percent by weight of the thickening polymer, wherein the hydrophobic modifier is comprised of an alkyl hydrocarbon based material containing between 10 and 24 unsubstituted carbon atoms per group;
wherein the water flooding composition is formulated to have a viscosity of between 2 mPa.s and 100 mPa.s and to be injectable into the subterranean formation.
2. The method as claimed in claim 1 wherein the concentration of the thickening polymer in the water flooding composition is between 0.05 percent and 0.25 percent by weight of the water flooding composition.
3. The method as claimed in claim 2 wherein the alkyl hydrocarbon based material of the hydrophobic modifier contains between 12 and 18 unsubstituted carbon atoms per group.
4. The method as claimed in claim 3 wherein the substitution level of the hydrophobic modifier in the thickening polymer is between 0.1 percent and 1.5 percent by weight of the thickening polymer.
5. The method as claimed in claim 4 wherein the hydrocarbon deposit has a mobility, wherein the water flooding composition has a mobility, and wherein a ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 100:1.
6. The method as claimed in claim 5 wherein the water flooding composition is adapted to be capable of being passed through a permeable test medium from an upstream end of the permeable test medium to a downstream end of the permeable test medium, wherein the permeable test medium has an initial permeability of less than 10 darcies, such that the thickening polymer has an initial concentration in the water flooding composition at the upstream end of the permeable test medium and a final concentration in the water flooding composition at the downstream end of the permeable test medium, and such that the final concentration of the thickening polymer in the water flooding composition is greater than ninety percent of the initial concentration of the thickening polymer in the water flooding composition.
7. The method as claimed in claim 6 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
8. The method as claimed in claim 7 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
9. The method as claimed in claim 8 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
10. The method as claimed in claim 5 wherein the water flooding composition is adapted to be capable of being passed through a permeable test medium from an upstream end of the permeable test medium to a downstream end of the permeable test medium, wherein the permeable test medium has an initial permeability of less than 10 darcies, such that the water flooding composition has an initial viscosity at the upstream end of the permeable test medium and a final viscosity at the downstream end of the permeable test medium, and such that the final viscosity of the water flooding composition is greater than ninety percent of the initial viscosity of the water flooding composition.
11. The method as claimed in claim 10 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
12. The method as claimed in claim 11 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
13. The method as claimed in claim 12 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
14. The method as claimed in claim 4 wherein the water flooding composition is adapted to be capable of being passed through a permeable test medium from an upstream end of the permeable test medium to a downstream end of the permeable test medium, wherein the permeable test medium has an initial permeability of less than 10 darcies, such that the thickening polymer has an initial concentration in the water flooding composition at the upstream end of the permeable test medium and a final concentration in the water flooding composition at the downstream end of the permeable test medium, and such that the final concentration of the thickening polymer in the water flooding composition is greater than ninety percent of the initial concentration of the thickening polymer in the water flooding composition.
15. The method as claimed in claim 14 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
16. The method as claimed in claim 4 wherein the water flooding composition is adapted to be capable of being passed through a permeable test medium from an upstream end of the permeable test medium to a downstream end of the permeable test medium, wherein the permeable test medium has an initial permeability of less than 10 darcies, such that the water flooding composition has an initial viscosity at the upstream end of the permeable test medium and a final viscosity at the downstream end of the permeable test medium, and such that the final viscosity of the water flooding composition is greater than ninety percent of the initial viscosity of the water flooding composition.
17. The method as claimed in claim 16 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
18. The method as claimed in claim 4 wherein the hydroxyethyl cellulose backbone polymer of the water flooding composition has a molecular weight of 1,300,000.
19. The method as claimed in claim 18 wherein the hydrocarbon deposit has a mobility, wherein the water flooding composition has a mobility, and wherein a ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 100:1.
20. The method as claimed in claim 19 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
21. The method as claimed in claim 20 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
22. The method as claimed in claim 21 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
23. The method as claimed in claim 18 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
24. The method as claimed in claim 4 wherein the alkyl hydrocarbon based material of the hydrophobic modifier is comprised of dodecyl tetradecyl glycidyl ether.
25. The method as claimed in claim 24 wherein the hydrocarbon deposit has a mobility, wherein the water flooding composition has a mobility, and wherein a ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 100:1.
26. The method as claimed in claim 25 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
27. The method as claimed in claim 26 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
28. The method as claimed in claim 27 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
29. The method as claimed in claim 24 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
30. The method as claimed in claim 4 wherein the substitution level of the hydrophobic modifier in the thickening polymer is between 0.7 percent and 1 percent by weight of the thickening polymer.
31. The method as claimed in claim 30 wherein the hydrocarbon deposit has a mobility, wherein the water flooding composition has a mobility, and wherein a ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 100:1.
32. The method as claimed in claim 31 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
33. The method as claimed in claim 32 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
34. The method as claimed in claim 33 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
35. The method as claimed in claim 30 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
36. The method as claimed in claim 4 wherein the concentration of the thickening polymer in the water flooding composition is 0.2 percent by weight of the water flooding composition.
37. The method as claimed in claim 36 wherein the hydrocarbon deposit has a mobility, wherein the water flooding composition has a mobility, and wherein a ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 100:1.
38. The method as claimed in claim 37 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 50:1.
39. The method as claimed in claim 38 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 10:1.
40. The method as claimed in claim 39 wherein the ratio of the mobility of the water flooding composition to the mobility of the hydrocarbon deposit is no greater than 2:1.
41. The method as claimed in claim 36 wherein the water flooding composition has a viscosity of between 2 mPa.s and 50 mPa.s.
42. The method as claimed in claim 4 wherein the hydroxyethyl cellulose backbone polymer of the water flooding composition has a molecular weight of 1,300,000, wherein the alkyl hydrocarbon based material of the hydrophobic modifier is comprised of dodecyl tetradecyl glycidyl ether, wherein the substitution level of the hydrophobic modifier in the thickening polymer is between 0.7 percent and 1 percent by weight of the thickening polymer, and wherein the concentration of the thickening polymer in the water flooding composition is 0.2 percent by weight of the water flooding composition.
43. The method as claimed in claim 42 wherein the water of the water flooding composition is comprised of a brine solution.
44. The method as claimed in claim 43 wherein the brine solution is comprised of one percent sodium chloride by weight of the brine solution.
45. A method of preparing a water flooding composition for use in a method of secondary hydrocarbon recovery of a type which comprises passing the water flooding composition through a subterranean formation containing a hydrocarbon deposit, the method comprising:
(a) selecting a hydroxyethyl cellulose backbone polymer having a molecular weight of between 1,000,000 and 2,000,000;
(b) selecting a hydrophobic modifier comprised of an alkyl hydrocarbon based material containing between 10 and 24 unsubstituted carbon atoms per group;
(c) providing a thickening polymer comprising the hydroxyethyl cellulose backbone polymer and the hydrophobic modifier in a substitution level in the thickening polymer of between 0.1 percent and 2 percent by weight of the thickening polymer;
and (d) combining the thickening polymer with water to provide the water flooding composition, wherein the thickening polymer has a concentration of between 0.1 percent and 1 percent by weight of the water flooding composition;
wherein the water flooding composition has a viscosity of between 2 mPa.s and 100 mPa.s and is injectable into the subterranean formation.
(a) selecting a hydroxyethyl cellulose backbone polymer having a molecular weight of between 1,000,000 and 2,000,000;
(b) selecting a hydrophobic modifier comprised of an alkyl hydrocarbon based material containing between 10 and 24 unsubstituted carbon atoms per group;
(c) providing a thickening polymer comprising the hydroxyethyl cellulose backbone polymer and the hydrophobic modifier in a substitution level in the thickening polymer of between 0.1 percent and 2 percent by weight of the thickening polymer;
and (d) combining the thickening polymer with water to provide the water flooding composition, wherein the thickening polymer has a concentration of between 0.1 percent and 1 percent by weight of the water flooding composition;
wherein the water flooding composition has a viscosity of between 2 mPa.s and 100 mPa.s and is injectable into the subterranean formation.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2684230A CA2684230C (en) | 2009-10-30 | 2009-10-30 | Water flooding method for secondary hydrocarbon recovery |
| PCT/CA2010/001522 WO2011050445A1 (en) | 2009-10-30 | 2010-09-27 | Water flooding method for secondary hydrocarbon recovery |
| CN2010800493441A CN102666777A (en) | 2009-10-30 | 2010-09-27 | Water flooding method for secondary hydrocarbon recovery |
| US13/502,489 US20120199355A1 (en) | 2009-10-30 | 2010-09-27 | Water flooding method for secondary hydrocarbon recovery |
| BR112012011475A BR112012011475A2 (en) | 2009-10-30 | 2010-09-27 | water injection process for secondary hydrocarbon recovery. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2684230A CA2684230C (en) | 2009-10-30 | 2009-10-30 | Water flooding method for secondary hydrocarbon recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2684230A1 true CA2684230A1 (en) | 2011-04-30 |
| CA2684230C CA2684230C (en) | 2012-08-14 |
Family
ID=43921189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2684230A Expired - Fee Related CA2684230C (en) | 2009-10-30 | 2009-10-30 | Water flooding method for secondary hydrocarbon recovery |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120199355A1 (en) |
| CN (1) | CN102666777A (en) |
| BR (1) | BR112012011475A2 (en) |
| CA (1) | CA2684230C (en) |
| WO (1) | WO2011050445A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015034463A1 (en) * | 2013-09-03 | 2015-03-12 | Halliburton Energy Services, Inc. | Methods and systems for evaluation of rock permeability, porosity, and fluid composition |
| WO2017196304A1 (en) * | 2016-05-10 | 2017-11-16 | Halliburton Energy Services, Inc. | Shear-thinning self-viscosifying system for hydraulic fracturing applications |
| CA3030474A1 (en) | 2016-07-26 | 2018-02-01 | Saudi Arabian Oil Company | Addition of monovalent salts for improved viscosity of polymer solutions used in oil recovery applications |
| US10436693B2 (en) * | 2016-07-27 | 2019-10-08 | Chevron U.S.A. Inc. | Portable apparatus and methods for analyzing injection fluids |
| US11085259B2 (en) | 2019-11-27 | 2021-08-10 | Chevron U.S.A. Inc. | Systems and processes for improved drag reduction estimation and measurement |
| US11898094B2 (en) | 2019-11-27 | 2024-02-13 | Chevron U.S.A. Inc. | Systems and processes for improved drag reduction estimation and measurement |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1263172A (en) * | 1969-02-12 | 1972-02-09 | Dow Chemical Co | Preparation of mixed cellulose ethers |
| US4228277A (en) * | 1979-02-12 | 1980-10-14 | Hercules Incorporated | Modified nonionic cellulose ethers |
| US4622153A (en) * | 1980-01-25 | 1986-11-11 | Nl Industries, Inc. | Liquid polymer containing compositions for thickening aqueous systems |
| US4670164A (en) * | 1980-01-25 | 1987-06-02 | Nl Industries, Inc. | Liquid polymer containing compositions for thickening aqueous systems |
| US4529523A (en) * | 1982-06-08 | 1985-07-16 | Hercules Incorporated | Hydrophobically modified polymers |
| US5129457A (en) * | 1991-03-11 | 1992-07-14 | Marathon Oil Company | Enhanced liquid hydrocarbon recovery process |
| NO178243C (en) * | 1993-06-23 | 1996-02-14 | Berol Nobel Ab | Surfactant, method of its preparation and use |
| RU2410403C2 (en) * | 2005-02-17 | 2011-01-27 | Геркулес Инкорпорейтед | Hydroxyethyl cellulose substituted in mass, derivatives thereof, preparation method thereof and application |
-
2009
- 2009-10-30 CA CA2684230A patent/CA2684230C/en not_active Expired - Fee Related
-
2010
- 2010-09-27 CN CN2010800493441A patent/CN102666777A/en active Pending
- 2010-09-27 WO PCT/CA2010/001522 patent/WO2011050445A1/en active Application Filing
- 2010-09-27 BR BR112012011475A patent/BR112012011475A2/en not_active IP Right Cessation
- 2010-09-27 US US13/502,489 patent/US20120199355A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20120199355A1 (en) | 2012-08-09 |
| BR112012011475A2 (en) | 2019-09-24 |
| CA2684230C (en) | 2012-08-14 |
| CN102666777A (en) | 2012-09-12 |
| WO2011050445A1 (en) | 2011-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20151030 |