CA2648708A1 - Rheology modifiers - Google Patents
Rheology modifiers Download PDFInfo
- Publication number
- CA2648708A1 CA2648708A1 CA002648708A CA2648708A CA2648708A1 CA 2648708 A1 CA2648708 A1 CA 2648708A1 CA 002648708 A CA002648708 A CA 002648708A CA 2648708 A CA2648708 A CA 2648708A CA 2648708 A1 CA2648708 A1 CA 2648708A1
- Authority
- CA
- Canada
- Prior art keywords
- acid
- fluid
- ppg
- peg
- weight
- 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.)
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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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/30—Viscoelastic surfactants [VES]
Abstract
A method for increasing the rate of shear rehealing of fluids made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a polymeric rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol. For applications in which rapid shear rehealing is required, the rheology enhancer allows fluids to be made and used at lower viscoelastic surfactant concentrations. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.
Claims (20)
1. An oilfield treatment method of fracturing, gravel packing or both fracturing and gravel packing comprising:
a. providing a fluid comprising a viscoelastic surfactant selected from at least one of zwitterionic, amphoteric, and cationic surfactants and mixtures thereof, b. adding to said fluid from 0.005 to 0.5 weight % of a rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol, increasing viscosity of said fluid, and decreasing shear rehealing time of said fluid, and c. injecting said fluid down a well.
a. providing a fluid comprising a viscoelastic surfactant selected from at least one of zwitterionic, amphoteric, and cationic surfactants and mixtures thereof, b. adding to said fluid from 0.005 to 0.5 weight % of a rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol, increasing viscosity of said fluid, and decreasing shear rehealing time of said fluid, and c. injecting said fluid down a well.
2. The method of claim 1 wherein said viscoelastic surfactant comprises a zwitterionic surfactant having the formula:
RCONH-(CH2)a(CH2CH2O)m(CH2)b-N+(CH3)2-(CH2)a'(CH2CH2O)m'(CH2)b'COO-wherein R is an alkyl group that contains from 17 to 23 carbon atoms which may be branched or straight chained and which may be saturated or unsaturated; a, b, a', and b' are each from 0 to 10 and m and m' are each from 0 to 13, a and b are each 1 or 2 if m is not 0 and (a + b) is from 2 to 10 if m is 0; a' and b' are each 1 or 2 when m' is not 0 and (a' + b') is from 1 to 5 if m' is 0; (m + m') is from 0 to 14; and CH2CH2O may also be OCH2CH2.
RCONH-(CH2)a(CH2CH2O)m(CH2)b-N+(CH3)2-(CH2)a'(CH2CH2O)m'(CH2)b'COO-wherein R is an alkyl group that contains from 17 to 23 carbon atoms which may be branched or straight chained and which may be saturated or unsaturated; a, b, a', and b' are each from 0 to 10 and m and m' are each from 0 to 13, a and b are each 1 or 2 if m is not 0 and (a + b) is from 2 to 10 if m is 0; a' and b' are each 1 or 2 when m' is not 0 and (a' + b') is from 1 to 5 if m' is 0; (m + m') is from 0 to 14; and CH2CH2O may also be OCH2CH2.
3. The method of claim 1 wherein said zwitterionic surfactant has the betaine structure:
wherein R is a hydrocarbon group that may be branched or straight chained, aromatic, aliphatic or olefinic and has from 14 to 26 carbon atoms and may contain an amine; n = 2 to 4; and p = 1 to 5, and mixtures of these compounds.
wherein R is a hydrocarbon group that may be branched or straight chained, aromatic, aliphatic or olefinic and has from 14 to 26 carbon atoms and may contain an amine; n = 2 to 4; and p = 1 to 5, and mixtures of these compounds.
4. The method of claim 3 wherein said betaine comprises oleylamidopropyl betaine.
5. The method of claim 3 wherein said betaine comprises erucylamidopropyl betaine.
6. The method of claim 1 wherein said viscoelastic surfactant comprises a cationic surfactant.having the structure:
R1N+(R2)(R3)(R4) X-in which R1 has from 14 to 26 carbon atoms and may be branched or straight chained, aromatic, saturated or unsaturated, and may comprise a carbonyl, an amide, a retroamide, an imide, a urea, or an amine; R2 , R3, and R4 are each independently hydrogen or a C1 to C6 aliphatic group which may be the same or different, branched or straight chained, saturated or unsaturated and one or more than one of which may be substituted with a group that renders the R2, R3, and group more hydrophilic; the R2, R3 and R4 groups may be incorporated into a heterocyclic 5- or 6-member ring structure which includes the nitrogen atom;
the R2, R3 and R4 groups may be the same or different; R1, R2, R3 and/or R4 may contain one or more ethylene oxide and/or propylene oxide units; and X- is an anion; and mixtures of these compounds.
R1N+(R2)(R3)(R4) X-in which R1 has from 14 to 26 carbon atoms and may be branched or straight chained, aromatic, saturated or unsaturated, and may comprise a carbonyl, an amide, a retroamide, an imide, a urea, or an amine; R2 , R3, and R4 are each independently hydrogen or a C1 to C6 aliphatic group which may be the same or different, branched or straight chained, saturated or unsaturated and one or more than one of which may be substituted with a group that renders the R2, R3, and group more hydrophilic; the R2, R3 and R4 groups may be incorporated into a heterocyclic 5- or 6-member ring structure which includes the nitrogen atom;
the R2, R3 and R4 groups may be the same or different; R1, R2, R3 and/or R4 may contain one or more ethylene oxide and/or propylene oxide units; and X- is an anion; and mixtures of these compounds.
7. The method of claim 6 wherein R1 comprises from 18 to 22 carbon atoms and may comprise a carbonyl, an amide, or an amine; R2, R3, and R4 comprise from 1 to 3 carbon atoms, and X- is a halide.
8. The method of claim 1 wherein said fluid further comprises from 0.01 to 10 weight percent of a member selected from at least one of amines, alcohols, glycols, organic salts, chelating agents, solvents, mutual solvents, organic acids, organic acid salts, inorganic salts, oligomers, and mixtures of said members.
9. The method of claim 1 wherein said surfactant comprises an amphoteric amine oxide.
10. The method of claim 9 wherein said amine oxide comprises an amidoamine oxide.
11. The method of claim 1 wherein said rheology enhancer comprises polypropylene glycol having a molecular weight of from 600 to 100000.
12. The method of claim 11 wherein said polypropylene glycol is present at a concentration of from 0.005 weight % to 1 weight % of the concentration of the active viscoelastic surfactant.
13. The method of claim 1 wherein said rheology enhancer is selected from the group consisting of block copolymers having the structure PPG - PEG - PPG, PEG -PPG - PEG, and PPG - PEG, wherein PPG is polypropylene glycol and PEG is polyethylene glycol.
14. The method of claim 13 wherein the number of monomeric units in each PPG
block is from 8 to 24 and the number of monomeric units in each PEG block is from 4 to 12.
block is from 8 to 24 and the number of monomeric units in each PEG block is from 4 to 12.
15. The method of claim 13 wherein said block copolymer is present at a concentration of from 0.05 weight % to 10 weight % of the concentration of the active viscoelastic surfactant.
16. The method of claim 13 wherein said block copolymer has a molecular weight of from 1000 to 18,000.
17. The method of claim 16 wherein said block copolymer glycol has a molecular weight of from 2000 to 4000.
18. The method of claim 13 wherein the block copolymers have terminal groups selected from hydrogen, hydroxyl, and alkyl, wherein the alkyl groups may be linear or branched, and may be saturated or unsaturated, and may contain from one to 12 carbon atoms, and wherein the terminal groups may be the same or different.
19. The method of claim 1 wherein said fluid further comprises an acid selected from at least one of hydrochloric acid, hydrofluoric acid, formic acid, acetic acid, polylactic acid, polyglycolic acid, lactic acid, glycolic acid, sulfamic acid, malic acid, citric acid, tartaric acid, maleic acid, methylsulfamic acid, chloroacetic acid, and mixtures thereof.
20. An oilfield treatment fluid useful in the method of claim 1 comprising:
a. a viscoelastic surfactant selected from at least one of zwitterionic, amphoteric, and cationic surfactants and mixtures thereof, b. from 0.01% to 0.5% of a rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol thereby increasing the viscosity of said fluid and decreasing the rate of shear rehealing of said fluid, said rheology enhancer, and c. a liquid carrier.
a. a viscoelastic surfactant selected from at least one of zwitterionic, amphoteric, and cationic surfactants and mixtures thereof, b. from 0.01% to 0.5% of a rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol thereby increasing the viscosity of said fluid and decreasing the rate of shear rehealing of said fluid, said rheology enhancer, and c. a liquid carrier.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/279,612 | 2006-04-13 | ||
| US11/279,612 US7387987B2 (en) | 2002-12-19 | 2006-04-13 | Rheology modifiers |
| PCT/IB2007/051308 WO2007119210A2 (en) | 2006-04-13 | 2007-04-11 | Rheology modifiers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2648708A1 true CA2648708A1 (en) | 2007-10-25 |
| CA2648708C CA2648708C (en) | 2011-05-24 |
Family
ID=38358008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2648708A Expired - Fee Related CA2648708C (en) | 2006-04-13 | 2007-04-11 | Rheology modifiers |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7387987B2 (en) |
| CA (1) | CA2648708C (en) |
| WO (1) | WO2007119210A2 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7387987B2 (en) * | 2002-12-19 | 2008-06-17 | Schlumberger Technology Corporation | Rheology modifiers |
| US7378378B2 (en) | 2002-12-19 | 2008-05-27 | Schlumberger Technology Corporation | Rheology enhancers |
| US7291651B2 (en) * | 2003-12-05 | 2007-11-06 | Schlumberger Technology Corporation | Carbon dioxide foamed fluids |
| US7341980B2 (en) * | 2004-11-22 | 2008-03-11 | Schlumberger Technology Corporation | Viscoelastic surfactant rheology modification |
| JP3930896B1 (en) * | 2005-12-28 | 2007-06-13 | 株式会社メンテック | Functional composition and method for improving releasability of wet paper using the same |
| US20070244204A1 (en) * | 2006-04-13 | 2007-10-18 | Evelyne Prat | Rheology enhancers in non-oilfield applications |
| US8481462B2 (en) | 2006-09-18 | 2013-07-09 | Schlumberger Technology Corporation | Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids |
| US7635028B2 (en) | 2006-09-18 | 2009-12-22 | Schlumberger Technology Corporation | Acidic internal breaker for viscoelastic surfactant fluids in brine |
| US8247355B2 (en) * | 2009-06-25 | 2012-08-21 | Schlumberger Technology Corporation | Acidic viscosity enhancer for viscoelastic surfactant fluids |
| US8881820B2 (en) * | 2009-08-31 | 2014-11-11 | Halliburton Energy Services, Inc. | Treatment fluids comprising entangled equilibrium polymer networks |
| US8813845B2 (en) * | 2009-08-31 | 2014-08-26 | Halliburton Energy Services, Inc. | Polymeric additives for enhancement of treatment fluids comprising viscoelastic surfactants and methods of use |
| US8895481B2 (en) * | 2009-12-21 | 2014-11-25 | Schlumberger Technology Corporation | Viscoelastic surfactant acid treatment |
| US7897547B1 (en) | 2009-12-21 | 2011-03-01 | Schlumberger Technology Corporation | Viscoelastic surfactant rheology modifier |
| US8207096B2 (en) * | 2009-12-30 | 2012-06-26 | Halliburton Energy Services Inc. | Compressible packer fluids and methods of making and using same |
| US8148303B2 (en) | 2010-06-30 | 2012-04-03 | Halliburton Energy Services Inc. | Surfactant additives used to retain producibility while drilling |
| US8418761B2 (en) | 2010-07-29 | 2013-04-16 | Halliburton Energy Services, Inc. | Stimuli-responsive high viscosity pill |
| US8453741B2 (en) | 2010-09-23 | 2013-06-04 | Halliburton Energy Services, Inc. | Tethered polymers used to enhance the stability of microemulsion fluids |
| US8496061B2 (en) | 2011-01-19 | 2013-07-30 | Saudi Arabian Oil Company | VDA/acid system for matrix acid stimulation |
| NO2951267T3 (en) * | 2013-02-04 | 2018-02-10 | ||
| US9790775B2 (en) | 2013-03-15 | 2017-10-17 | Schlumberger Technology Corporation | Stimulation with natural gas |
| CN103409126B (en) * | 2013-09-04 | 2016-05-25 | 上海海瑰化工科技有限公司 | A kind of by block copolymer improvement beet alkali surface activator system and uses thereof |
| CN109196074A (en) * | 2016-05-25 | 2019-01-11 | 罗地亚经营管理公司 | The shear restoration of thickening surfactant in stimulation fluid |
| CA3049767C (en) * | 2017-01-11 | 2022-05-31 | Saudi Arabian Oil Company | High performance brine viscosifier |
| US11530349B2 (en) * | 2017-06-26 | 2022-12-20 | Schlumberger Technology Corporation | Methods of controlling viscosity of acids |
| US11319478B2 (en) | 2019-07-24 | 2022-05-03 | Saudi Arabian Oil Company | Oxidizing gasses for carbon dioxide-based fracturing fluids |
| US11352548B2 (en) | 2019-12-31 | 2022-06-07 | Saudi Arabian Oil Company | Viscoelastic-surfactant treatment fluids having oxidizer |
| WO2021138355A1 (en) | 2019-12-31 | 2021-07-08 | Saudi Arabian Oil Company | Viscoelastic-surfactant fracturing fluids having oxidizer |
| US11542815B2 (en) | 2020-11-30 | 2023-01-03 | Saudi Arabian Oil Company | Determining effect of oxidative hydraulic fracturing |
| CN113736443A (en) * | 2021-09-24 | 2021-12-03 | 四川省威沃敦化工有限公司 | Low-carbon environment-friendly multifunctional drag reducer for fracturing and preparation method thereof |
| CN115537193B (en) * | 2022-09-23 | 2023-10-03 | 江南大学 | Preparation method and application of efficient clean fracturing fluid |
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| US7378378B2 (en) * | 2002-12-19 | 2008-05-27 | Schlumberger Technology Corporation | Rheology enhancers |
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-
2006
- 2006-04-13 US US11/279,612 patent/US7387987B2/en not_active Expired - Fee Related
-
2007
- 2007-04-11 CA CA2648708A patent/CA2648708C/en not_active Expired - Fee Related
- 2007-04-11 WO PCT/IB2007/051308 patent/WO2007119210A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US7387987B2 (en) | 2008-06-17 |
| WO2007119210A2 (en) | 2007-10-25 |
| US20060185842A1 (en) | 2006-08-24 |
| WO2007119210A3 (en) | 2008-03-27 |
| CA2648708C (en) | 2011-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20200831 |