CN111574991B - Efficient cleanup additive for continental facies shale and preparation method thereof - Google Patents
Efficient cleanup additive for continental facies shale and preparation method thereof Download PDFInfo
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- CN111574991B CN111574991B CN202010430120.0A CN202010430120A CN111574991B CN 111574991 B CN111574991 B CN 111574991B CN 202010430120 A CN202010430120 A CN 202010430120A CN 111574991 B CN111574991 B CN 111574991B
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- surfactant
- silane
- cleanup additive
- hydrocarbon
- fluorocarbon
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- 239000000654 additive Substances 0.000 title claims abstract description 24
- 230000000996 additive effect Effects 0.000 title claims abstract description 24
- 208000035126 Facies Diseases 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 79
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 26
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 26
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 26
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 26
- 229910000077 silane Inorganic materials 0.000 claims abstract description 26
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims abstract description 8
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 claims abstract description 8
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims abstract description 8
- 229960003237 betaine Drugs 0.000 claims abstract description 8
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000005005 perfluorohexyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 claims abstract description 8
- 229920001289 polyvinyl ether Polymers 0.000 claims abstract description 8
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
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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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—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
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Silicon Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a continental facies shale used high-efficiency cleanup additive, which comprises a fluorocarbon surfactant, a hydrocarbon surfactant and a silane surfactant, wherein the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is (2-3) to (5-7): (8-10); wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine. The efficient cleanup additive for the continental facies shale can effectively increase the contact angle and reduce the capillary resistance while reducing the surface interfacial tension, has the double-hydrophobic effect, and can be used for the continental facies shale reservoir with the characteristics of high water saturation, poor self-absorption capacity, high adsorbed gas content and the like.
Description
Technical Field
The invention belongs to the technical field of oilfield fracturing fluids, and particularly relates to an efficient cleanup additive for continental facies shale and a preparation method thereof.
Background
In the exploration and development process of the terrestrial shale in China, as the reservoir has the characteristics of high water saturation, poor self-absorption capacity and the like, the conventional cleanup additive is difficult to effectively reduce the surface tension, the interfacial tension and the capillary resistance of the fracturing gel breaking liquid of the terrestrial shale, and the requirement of quicker and more thorough flowback of the gel breaking liquid is difficult to meet.
Therefore, based on the problems, the efficient cleanup additive for the continental shale and the preparation method thereof are provided, which solve the problem that the conventional cleanup additive is difficult to satisfy the development of the continental shale, and have important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an efficient cleanup additive for continental shale and a preparation method thereof, which solve the problem that the conventional cleanup additive is difficult to meet the development of the continental shale.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a high-efficiency cleanup additive for continental facies shale comprises a fluorocarbon surfactant, a hydrocarbon surfactant and a silane surfactant, wherein the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is (2-3) to (5-7): (8-10);
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Further, the mass ratio of (2-3) to (5-7): and (8-10) mixing and uniformly stirring the fluorocarbon surfactant, the hydrocarbon surfactant and the silane surfactant to obtain the cleanup additive.
The invention has the advantages and positive effects that:
the efficient cleanup additive for the continental facies shale can effectively increase the contact angle and reduce the capillary resistance while reducing the surface interfacial tension, has the double-hydrophobic effect, and can be used for the continental facies shale reservoir with the characteristics of high water saturation, poor self-absorption capacity, high adsorbed gas content and the like.
Detailed Description
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and furthermore, the terms "comprises" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1:
the mass ratio of the materials fed is that the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is 2: 5: 8.
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Adding a certain amount of hydrocarbon surfactant, fluorocarbon surfactant and silane surfactant in proportion, and uniformly stirring to obtain the cleanup additive.
Example 2:
the mass ratio of the materials fed is that the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is 2: 6: 9.
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Adding a certain amount of hydrocarbon surfactant, fluorocarbon surfactant and silane surfactant in proportion, and uniformly stirring to obtain the cleanup additive.
Example 3:
the mass ratio of the materials fed is that the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is 3: 7: 8.
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Adding a certain amount of hydrocarbon surfactant, fluorocarbon surfactant and silane surfactant in proportion, and uniformly stirring to obtain the cleanup additive.
Example 4:
the mass ratio of the materials fed is that the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is 3: 6: 10.
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Adding a certain amount of hydrocarbon surfactant, fluorocarbon surfactant and silane surfactant in proportion, and uniformly stirring to obtain the cleanup additive.
Example 5:
the mass ratio of the materials fed is that the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is 3: 7: 9.
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
Adding a certain amount of hydrocarbon surfactant, fluorocarbon surfactant and silane surfactant in proportion, and uniformly stirring to obtain the cleanup additive.
Example 6:
the cleanup additive obtained in examples 1-5 was formulated into a 0.04% aqueous solution, and surface interfacial tension test and contact angle test were performed according to the standard "SY/T5755-2016 cleanup additive performance evaluation method for fracture acidizing", and the results are shown in Table 1.
TABLE 1 Performance data
As can be seen from Table 1, the cleanup additive of the embodiment can effectively reduce surface interfacial tension and increase contact angle, the surface tension is less than 28mN/m, the interfacial tension is less than 2mN/m, and the contact angle is greater than 87 degrees, which indicates that capillary resistance can be effectively reduced, the addition amount is small, the cleanup effect is good, the preparation is simple, quick flowback can be realized after construction, and formation damage is reduced.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (2)
1. The efficient cleanup additive for continental facies shale is characterized in that: the surfactant comprises a fluorocarbon surfactant, a hydrocarbon surfactant and a silane surfactant, wherein the mass ratio of the fluorocarbon surfactant to the hydrocarbon surfactant to the silane surfactant is (2-3) to (5-7): (8-10);
wherein, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant is octadecyl dihexyl betaine.
2. The preparation method of the high-efficiency cleanup additive for continental facies shale as recited in claim 1, wherein: mixing the following components in a mass ratio of (2-3) to (5-7): and (8-10) mixing and uniformly stirring the fluorocarbon surfactant, the hydrocarbon surfactant and the silane surfactant to obtain the cleanup additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430120.0A CN111574991B (en) | 2020-05-20 | 2020-05-20 | Efficient cleanup additive for continental facies shale and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430120.0A CN111574991B (en) | 2020-05-20 | 2020-05-20 | Efficient cleanup additive for continental facies shale and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111574991A CN111574991A (en) | 2020-08-25 |
| CN111574991B true CN111574991B (en) | 2022-04-29 |
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| CN112964604A (en) * | 2021-03-25 | 2021-06-15 | 西南石油大学 | Rock contact angle testing device and method considering water saturation and adsorbed gas |
| CN117801801B (en) * | 2023-12-05 | 2024-06-14 | 四川康成杰科技有限责任公司 | Interface modifier for improving flowback rate of low-permeability oil-gas reservoir fracturing fluid and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666441A (en) * | 2013-12-18 | 2014-03-26 | 四川省博仁达石油科技有限公司 | Multifunctional synergist for acidizing and fracturing as well as preparation method thereof |
| CN107120103A (en) * | 2017-05-17 | 2017-09-01 | 成都百联油田技术服务有限公司 | A kind of fracture acidizing cleanup additive |
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| US20160069159A1 (en) * | 2014-09-09 | 2016-03-10 | Tadesse Weldu Teklu | Matrix-fracture interface cleanup method for tight sandstone, carbonate, and shale reservoirs |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666441A (en) * | 2013-12-18 | 2014-03-26 | 四川省博仁达石油科技有限公司 | Multifunctional synergist for acidizing and fracturing as well as preparation method thereof |
| CN107120103A (en) * | 2017-05-17 | 2017-09-01 | 成都百联油田技术服务有限公司 | A kind of fracture acidizing cleanup additive |
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