CN105368438A - Viscoelastic surfactant fracturing fluid and preparation method thereof - Google Patents
Viscoelastic surfactant fracturing fluid and preparation method thereof Download PDFInfo
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- CN105368438A CN105368438A CN201510892428.6A CN201510892428A CN105368438A CN 105368438 A CN105368438 A CN 105368438A CN 201510892428 A CN201510892428 A CN 201510892428A CN 105368438 A CN105368438 A CN 105368438A
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- 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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- 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
- C09K8/607—Compositions for stimulating production by acting on the underground formation specially adapted for clay formations
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- 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
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- 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]
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention belongs to the technical field of oilfield fracturing, and in particular relates to a viscoelastic surfactant fracturing fluid. The fracturing fluid includes 2.5%-3.0% of long-chain alkyl quaternary ammonium salts, 1.0%-2.0% of long chain alkyl sulfonate, 0.5%-1.0% of a clay stabilizer, 0%-0.7% of lower alcohol and the balance of water. The preparation method is as follows: (1) metering water; (2) adding 2.5-3.0 wt.% of the long-chain alkyl quaternary ammonium salts, and stirring until completely dissolution; (3) adding 1.0-2.0 wt.% of long chain alkyl sulfonate, and stirring to obtain a clear solution; and (4) adding 0.5-1.0 wt.% of the clay stabilizer and 0-0.7 wt.% of lower alcohol, stirring to obtain a clear solution to obtain a desired product with pH value of 7-8. The fracturing fluid has good carrying sand ability and low cost, overcomes the defect of single cationic clean fracturing fluid, and is applicable to low temperature reservoirs.
Description
Technical field
The invention belongs to oil field compression fracture technical field, be specifically related to a kind of viscoelastic surfactant fracturing liquid and preparation method thereof.
Background technology
Fracturing technique is the important means of well production increment, and fracturing liquid plays an important role in hydraulic fracturing job, and of the fracturing fluid quality directly has influence on failure and the rear effect of increasing production of construction of frac job.Viscoelastic surfactant fracturing liquid is a kind of New Fracturing Fluid system, and it take viscoelastic surfactant as host, the viscoelastic systems of other auxiliary agents composite formation with it.
Be applied at present Oil Field maximum be cationic viscoelastic surfactants fracturing liquid, but its exist easily and the negative charge on formation rock surface produce adsorb, deposited phenomenon, be stranded in reservoir, affect the rate of permeation of reservoir, cats product difficult degradation in breaking glue solution, the more high defect of raw materials cost, develops a kind of formation nocuity minimum, and lower-cost composite fracturing fluid is a direction of clean fracturing fluid development instantly.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provide a kind of viscoelastic surfactant fracturing liquid, and it is good that it takes grittiness, with low cost, can overcome again single Cationic detersive fracturing liquid defect, low temperature reservoir in being applicable to.
Another object of the present invention is to provide the of the fracturing fluid preparation method of a kind of above-mentioned viscoelastic surfactant.
For solving the problems of the technologies described above, the present invention realizes like this.
A kind of viscoelastic surfactant fracturing liquid, in mass percentage, comprising:
Long carbon chain alkyl quaternary ammonium salts 2.5% ~ 3.0%;
Long carbon chain alkylsulfonate 1.0% ~ 2.0%;
Clay stabilizer 0.5% ~ 1.0%;
Water; Surplus.
As a kind of preferred version, the present invention also comprises the low-carbon alcohol that mass percentage is 0% ~ 0.7%.
Further, Long carbon chain alkyl quaternary ammonium salts of the present invention is the Long carbon chain alkyl quaternary ammonium salts that carbon chain lengths is at least more than 16 carbon atoms.
Further, the Long carbon chain alkylsulfonate of Long carbon chain alkylsulfonate of the present invention to be carbon chain lengths be 16 to 18 carbon atoms.
Further, clay stabilizer of the present invention is Repone K.
Further, low-carbon alcohol of the present invention is ethylene glycol or glycerol.
The of the fracturing fluid preparation method of above-mentioned viscoelastic surfactant, can carry out as follows:
(1) by metering water intaking;
(2) add the Long carbon chain alkyl quaternary ammonium salts of 2.5% ~ 3.0% mass percentage, be stirred to and dissolve completely;
(3) add the Long carbon chain alkylsulfonate of 1.0% ~ 2.0% mass percentage, stir to clarify solution;
(4) add successively 0.5% ~ 1.0% mass percentage clay stabilizer, the low-carbon alcohol of 0% ~ 0.7% mass percent, stirs to clarify solution, obtains object product; PH value is 7 ~ 8.
In preparation process of the present invention, all reagent is commerical prod, without the need to loaded down with trivial details preparation.In preparation process of the present invention, adopt raw material be environmental protection, low cost, reproducible, thus reduce production cost, simplify production sequence.
The present invention makes full use of the autonomous dress behavior of tensio-active agent at the aqueous solution, does not need to add linking agent, and the vermiculate glues of formation tangles into has reversible grid structure; Process for preparation is simple and easy, and formulation components is few, and employs environmentally friendly renewable resources, reduces costs; Wettability reversal can not be produced, formation fanout free region; Do not need to add gel breaker, water and oil can make this fracturing liquid rubber-breaking, without residue.
Embodiment
The of the fracturing fluid preparation method of a kind of viscoelastic surfactant, implements as follows:
(1) water is measured by of the fracturing fluid formula rate;
(2) add the Long carbon chain alkyl quaternary ammonium salts of 2.5% ~ 3.0% mass percent, be stirred to and dissolve completely;
(3) add the Long carbon chain alkylsulfonate of 1.0% ~ 2.0% mass percent, stir to clarify solution;
(4) add the clay stabilizer of 0.5% ~ 1.0% mass percent successively, the low-carbon alcohol of 0% ~ 0.7% mass percent, stirs to clarify solution.
embodiment 1.
Water is measured by of the fracturing fluid formula rate, add the cetyl trimethylammonium bromide of 2.5% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.0% mass percent, stir to clarify solution, add the Repone K of 0.5% mass percent successively, the ethylene glycol of 0% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.System viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Take sand results of property to show, average settlement speed is 0.798mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 27.2mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 2.
Water is measured by of the fracturing fluid formula rate, add the cetyl trimethylammonium bromide of 3.0% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.0% mass percent, stir to clarify solution, add the Repone K of 0.7% mass percent successively, the ethylene glycol of 0.3% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Take grittiness energy experimental result to show, average settlement speed is 0.751mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 26.8mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 3.
Water is measured by of the fracturing fluid formula rate, add the cetyl trimethylammonium bromide of 2.5% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.0% mass percent, stir to clarify solution, add the Repone K of 1.0% mass percent successively, the ethylene glycol of 0.3% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.System viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Take sand results of property to show, average settlement speed is 0.687mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 27.0mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 4.
Water is measured by of the fracturing fluid formula rate, add the cetyl trimethylammonium bromide of 3.0% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.0% mass percent, stir to clarify solution, add the Repone K of 1.0% mass percent successively, the ethylene glycol of 0.5% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Take grittiness energy experimental result to show, average settlement speed is 0.734mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 26.9mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 5.
Water is measured by of the fracturing fluid formula rate, add the Cetyltrimethylammonium bromide of 2.5% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.0% mass percent, stir to clarify solution, add the Repone K of 0.5% mass percent successively, the glycerol of 0% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Outstanding grittiness can carry out test result and show, average settlement speed is 0.752mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 27.5mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 6.
Water is measured by of the fracturing fluid formula rate, add the Cetyltrimethylammonium bromide of 3.0% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.5% mass percent, stir to clarify solution, add the Repone K of 0.7% mass percent successively, the glycerol of 0.7% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.The experimental result taking grittiness energy shows, average settlement speed is 0.788mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 27.8mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 7.
Water is measured by of the fracturing fluid formula rate, add the Cetyltrimethylammonium bromide of 3.0% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.5% mass percent, stir to clarify solution, add the Repone K of 1.0% mass percent successively, the glycerol of 0.5% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.Outstanding grittiness can carry out test result and show, average settlement speed is 0.698mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 26.5mNm
-1, meet oil and gas industry standard SY/T5107-2008.
embodiment 8.
Water is measured by of the fracturing fluid formula rate, add the Cetyltrimethylammonium bromide of 3.0% mass percent, be stirred to and dissolve completely, add the methyl sodiosul foaliphatate of 2.5% mass percent, stir to clarify solution, add the Repone K of 1.0% mass percent successively, the glycerol of 0.7% mass percent, stir to clarify solution, pH value is 7 ~ 8.To the heatproof anti-shear performance of fracturing fluid system, take grittiness energy, broken colloidality can be evaluated.Experimental result shows, system viscosity is still greater than 25mPa.s, meets clean fracturing fluid and takes sand and MV minium viscosity (25mPa.s) requirement of making seam of constructing.The experimental result taking grittiness energy shows, average settlement speed is 0.634mms
-1, meet U.S. SPE and assert standard 0.800mms
-1requirement.Broken rubber moulding draft experiment result shows, after broken glue, of the fracturing fluid surface tension is 27.5mNm
-1, meet oil and gas industry standard SY/T5107-2008.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (7)
1. a viscoelastic surfactant fracturing liquid, is characterized in that: in mass percentage, comprising:
Long carbon chain alkyl quaternary ammonium salts 2.5% ~ 3.0%;
Long carbon chain alkylsulfonate 1.0% ~ 2.0%;
Clay stabilizer 0.5% ~ 1.0%;
Water; Surplus.
2. viscoelastic surfactant fracturing liquid as claimed in claim 1, is characterized in that: also comprise the low-carbon alcohol that mass percentage is 0% ~ 0.7%.
3. viscoelastic surfactant fracturing liquid as claimed in claim 2, is characterized in that: described Long carbon chain alkyl quaternary ammonium salts is the Long carbon chain alkyl quaternary ammonium salts that carbon chain lengths is at least more than 16 carbon atoms.
4. viscoelastic surfactant fracturing liquid as claimed in claim 3, is characterized in that: the Long carbon chain alkylsulfonate of described Long carbon chain alkylsulfonate to be carbon chain lengths be 16 to 18 carbon atoms.
5. viscoelastic surfactant fracturing liquid as claimed in claim 4, is characterized in that: described clay stabilizer is Repone K.
6. viscoelastic surfactant fracturing liquid as claimed in claim 5, is characterized in that: described low-carbon alcohol is ethylene glycol or glycerol.
7. the of the fracturing fluid preparation method of viscoelastic surfactant as claimed in claim 6, is characterized in that: carry out as follows:
(1) by metering water intaking;
(2) add the Long carbon chain alkyl quaternary ammonium salts of 2.5% ~ 3.0% mass percentage, be stirred to and dissolve completely;
(3) add the Long carbon chain alkylsulfonate of 1.0% ~ 2.0% mass percentage, stir to clarify solution;
(4) add successively 0.5% ~ 1.0% mass percentage clay stabilizer, the low-carbon alcohol of 0% ~ 0.7% mass percent, stirs to clarify solution, obtains object product; PH value is 7 ~ 8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033868A (en) * | 2017-04-14 | 2017-08-11 | 中国石油大学(华东) | Nano material reinforcing clean fracturing fluid and preparation method thereof |
| CN110452679A (en) * | 2019-08-23 | 2019-11-15 | 四川洁能锐思石油技术有限公司 | A kind of shale gas fracturing fluid and preparation method thereof |
| CN110938419A (en) * | 2019-12-09 | 2020-03-31 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Low-freezing-point liquid recoverable clean fracturing fluid thickening agent and preparation method thereof |
| CN112646559A (en) * | 2019-10-10 | 2021-04-13 | 中国石油化工股份有限公司 | Sand carrying fluid with functions of improving flow resistance of thickened oil and stabilizing clay |
| CN117165275A (en) * | 2023-09-04 | 2023-12-05 | 盘锦天诚源科技有限公司 | Brine gel-anionic-cationic surfactant oil displacement agent suitable for high-mineralization oil reservoir oil displacement and application |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033868A (en) * | 2017-04-14 | 2017-08-11 | 中国石油大学(华东) | Nano material reinforcing clean fracturing fluid and preparation method thereof |
| CN110452679A (en) * | 2019-08-23 | 2019-11-15 | 四川洁能锐思石油技术有限公司 | A kind of shale gas fracturing fluid and preparation method thereof |
| CN112646559A (en) * | 2019-10-10 | 2021-04-13 | 中国石油化工股份有限公司 | Sand carrying fluid with functions of improving flow resistance of thickened oil and stabilizing clay |
| CN110938419A (en) * | 2019-12-09 | 2020-03-31 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Low-freezing-point liquid recoverable clean fracturing fluid thickening agent and preparation method thereof |
| CN117165275A (en) * | 2023-09-04 | 2023-12-05 | 盘锦天诚源科技有限公司 | Brine gel-anionic-cationic surfactant oil displacement agent suitable for high-mineralization oil reservoir oil displacement and application |
| CN117165275B (en) * | 2023-09-04 | 2024-04-26 | 盘锦天诚源科技有限公司 | Brine gel-anionic-cationic surfactant oil displacement agent suitable for high-mineralization oil reservoir oil displacement and application |
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