CN114426838A - Composite synergistic cleanup additive and preparation method thereof - Google Patents
Composite synergistic cleanup additive and preparation method thereof Download PDFInfo
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- CN114426838A CN114426838A CN202111545518.XA CN202111545518A CN114426838A CN 114426838 A CN114426838 A CN 114426838A CN 202111545518 A CN202111545518 A CN 202111545518A CN 114426838 A CN114426838 A CN 114426838A
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- CN
- China
- Prior art keywords
- parts
- cleanup additive
- composite synergistic
- betaine
- polyoxyethylene ether
- 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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- 239000000654 additive Substances 0.000 title claims abstract description 36
- 230000000996 additive effect Effects 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims abstract description 15
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims abstract description 15
- XWMGYUIDSBAERU-UHFFFAOYSA-N [Cl-].C(CCCCCCCCCCC)C([NH+](C)C)CCCCCCCCCCCC Chemical compound [Cl-].C(CCCCCCCCCCC)C([NH+](C)C)CCCCCCCCCCCC XWMGYUIDSBAERU-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229960003237 betaine Drugs 0.000 claims abstract description 15
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 15
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 15
- 229930182470 glycoside Natural products 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 8
- 150000002338 glycosides Chemical class 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- -1 alkyl glycoside Chemical class 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 239000003002 pH adjusting agent Substances 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000011737 fluorine Substances 0.000 abstract description 4
- 229910052731 fluorine Inorganic materials 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
-
- 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
- C09K8/604—Polymeric surfactants
-
- 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
- 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
- C09K8/885—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than 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)
- Detergent Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a composite synergistic cleanup additive and a preparation method thereof, belonging to the technical field of oil and gas exploitation. Comprises the following components in parts by weight: 2-3 parts of betaine, 5-8 parts of fatty alcohol-polyoxyethylene ether, 2-4 parts of didodecyl trimethyl ammonium chloride, 121410-15 parts of alkyl glycoside APG, and 70-81 parts of water. The composite synergistic cleanup additive does not contain fluorine, and can effectively solve the problem that the existing cleanup additive has harm to the environment and human body. Among the used materials, for example, the didodecyltrimethylammonium chloride has good compatibility with betaine and fatty alcohol-polyoxyethylene ether, and can reduce the surface interfacial tension of the fracturing fluid of the oil-gas field. The composite synergistic cleanup additive can be prepared on the construction site, and the use method is simple and convenient.
Description
Technical Field
The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a composite synergistic cleanup additive and a preparation method thereof.
Background
Fracturing is a common technical means when organizing oil wells, and is to utilize a pump to increase pressure to generate cracks in a stratum, enlarge the original cracks, and then inject a propping agent to increase the permeability of the stratum. In the process, the fracturing fluid serves to transmit pressure and introduce proppant. During fracturing construction, an external production-increasing fluid filtrate may generate physical and chemical actions with formation rocks and minerals to cause damage of liquid phases and solid phases, and in order to avoid blockage, an appropriate mode needs to be used, so that loss of the fracturing fluid in the filtering process is reduced, external working fluid is discharged as soon as possible, the recovery ratio is improved, damage to the formation is avoided, and the production-increasing task is completed. In order to increase the drainage rate and the flowback speed, many targeted drainage aids, such as fluorocarbon-containing surfactants, have been developed. The fluorocarbon-containing surfactants have a problem of being difficult to decompose, resulting in damage to the human body and the environment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a composite synergistic cleanup additive and a preparation method thereof, so as to solve the problems.
The technical scheme of the invention is as follows:
a composite synergistic cleanup additive comprises the following components in parts by weight: 2-3 parts of betaine, 5-8 parts of fatty alcohol-polyoxyethylene ether, 2-4 parts of didodecyl trimethyl ammonium chloride, 121410-15 parts of alkyl glycoside APG, and 70-81 parts of water.
Preferably, the composition comprises the following components in parts by weight: 2.5 parts of betaine, 6 parts of fatty alcohol-polyoxyethylene ether, 3 parts of didodecyl trimethyl ammonium chloride, 121412 parts of alkyl glycoside APG and 78.5 parts of water.
Preferably, the cleanup additive also comprises a pH regulator; the pH of the cleanup additive is controlled to be 6-8 by adding a pH regulator.
Preferably, the pH adjusting agent comprises hydrochloric acid or sodium carbonate.
Preferably, 5-15 parts of low molecular alcohol can be added into the cleanup additive to adjust the concentration of the cleanup additive.
Preferably, the low molecular alcohol is selected from monohydric alcohols or polyhydric alcohols.
Preferably, the monohydric alcohols include methanol, ethanol and isopropanol.
Preferably, the polyols include ethylene glycol and propylene glycol.
The preparation method of the composite synergistic cleanup additive comprises the following steps:
adding betaine, fatty alcohol-polyoxyethylene ether, didodecyltrimethyl ammonium chloride and alkyl glycoside into water, heating to 40-50 ℃, uniformly mixing, testing the pH of the solution, and if the pH of the solution is not between 6 and 8, adjusting by adding a pH regulator. The low molecular weight alcohol is added for adjustment according to the fluidity of the solution.
The invention has the beneficial effects that:
the composite synergistic cleanup additive does not contain fluorine, and can effectively solve the problem that the existing cleanup additive has harm to the environment and human body. Among the used materials, for example, the didodecyltrimethylammonium chloride has good compatibility with betaine and fatty alcohol-polyoxyethylene ether, and can reduce the surface interfacial tension of the fracturing fluid of the oil-gas field. The composite synergistic cleanup additive can be prepared on the construction site, and the use method is simple and convenient.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A composite synergistic cleanup additive comprises the following components in parts by weight: 2 parts of betaine, 5 parts of fatty alcohol-polyoxyethylene ether, 2 parts of didodecyltrimethyl ammonium chloride, 121410 parts of alkyl glycoside APG, 5 parts of ethylene glycol and 81 parts of water.
The preparation method comprises the following steps:
adding betaine, fatty alcohol-polyoxyethylene ether, didodecyltrimethyl ammonium chloride and alkyl glycoside into water, heating to 40 ℃, uniformly mixing, and testing the pH value of the solution to be 7; then 5 parts of glycol is added to adjust the solution, and the composite synergistic cleanup additive is obtained.
Example 2
A composite synergistic cleanup additive comprises the following components in parts by weight: 2.5 parts of betaine, 6 parts of fatty alcohol-polyoxyethylene ether, 3 parts of didodecyltrimethyl ammonium chloride, 121412 parts of alkyl glycoside APG, 2 parts of sodium bicarbonate, 10 parts of ethanol and 78.5 parts of water.
The preparation method comprises the following steps:
adding betaine, fatty alcohol-polyoxyethylene ether, didodecyltrimethyl ammonium chloride and alkyl glycoside into water, heating to 40 ℃, uniformly mixing, testing the pH value of the solution to be 5, adding 2 parts of sodium bicarbonate, and adjusting the pH value of the solution to be 6; then 10 parts of ethanol is added to adjust the solution, and the composite synergistic cleanup additive is obtained.
Example 3
A composite synergistic cleanup additive comprises the following components in parts by weight: 3 parts of betaine, 8 parts of fatty alcohol-polyoxyethylene ether, 4 parts of didodecyltrimethyl ammonium chloride, 121415 parts of alkyl glycoside APG, 5 parts of sodium bicarbonate, 15 parts of ethanol and 70 parts of water.
The preparation method comprises the following steps:
adding betaine, fatty alcohol-polyoxyethylene ether, didodecyltrimethyl ammonium chloride and alkyl glycoside into water, heating to 40 ℃, uniformly mixing, testing the pH value of the solution to be 5, adding 5 parts of sodium bicarbonate, and adjusting the pH value of the solution to be 6; then 15 parts of ethanol is added to adjust the solution, and the composite synergistic cleanup additive is obtained.
Test example
The composite synergistic cleanup additive prepared in example 1-example 3 was tested and the test results are shown in table 1:
TABLE 1 results of the measurements
The test results show that the cleanup additive prepared by the invention has equivalent effect with the commercial fluorine-containing product, and can effectively replace the fluorine-containing product.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The composite synergistic cleanup additive is characterized by comprising the following components in parts by weight: 2-3 parts of betaine, 5-8 parts of fatty alcohol-polyoxyethylene ether, 2-4 parts of didodecyl trimethyl ammonium chloride, 121410-15 parts of alkyl glycoside APG, and 70-81 parts of water.
2. The composite synergistic cleanup additive of claim 1, comprising the following components in parts by weight: 2.5 parts of betaine, 6 parts of fatty alcohol-polyoxyethylene ether, 3 parts of didodecyl trimethyl ammonium chloride, 121412 parts of alkyl glycoside APG and 78.5 parts of water.
3. The composite synergistic cleanup additive of claim 1, further comprising a pH adjuster; the pH of the cleanup additive is controlled to be 6-8 by adding a pH regulator.
4. The composite synergistic cleanup additive of claim 3, wherein said pH adjusting agent comprises hydrochloric acid or sodium carbonate.
5. The composite synergistic cleanup additive of claim 1, wherein said cleanup additive comprises 5-15 parts of low molecular alcohol.
6. The composite synergistic cleanup additive of claim 5, wherein said low molecular alcohol is selected from the group consisting of monohydric alcohols and polyhydric alcohols.
7. The composite synergistic cleanup additive of claim 6, wherein said monohydric alcohols comprise methanol, ethanol, and isopropanol.
8. The composite synergistic cleanup additive of claim 6, wherein said polyols comprise ethylene glycol and propylene glycol.
9. A process for preparing the composite synergistic cleanup additive of claim 1, comprising the steps of:
adding betaine, fatty alcohol-polyoxyethylene ether, didodecyltrimethyl ammonium chloride and alkyl glycoside into water, heating to 40-50 ℃, uniformly mixing, and controlling the pH of the solution to be 6-8.
10. The method of claim 9, wherein if the solution pH is not between 6 and 8, the pH is adjusted by adding a pH adjuster; the low molecular weight alcohol is added for adjustment according to the fluidity of the solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545518.XA CN114426838B (en) | 2021-12-16 | 2021-12-16 | Composite synergistic cleanup additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545518.XA CN114426838B (en) | 2021-12-16 | 2021-12-16 | Composite synergistic cleanup additive and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114426838A true CN114426838A (en) | 2022-05-03 |
| CN114426838B CN114426838B (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111545518.XA Active CN114426838B (en) | 2021-12-16 | 2021-12-16 | Composite synergistic cleanup additive and preparation method thereof |
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| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295919A (en) * | 2011-05-30 | 2011-12-28 | 西南石油大学 | High efficient fluoride-free cleanup additive used for acidifying |
| CN103614129A (en) * | 2013-12-13 | 2014-03-05 | 成都华阳兴华化工有限公司 | Corrosion inhibition foam water discharging agent for oil-gas well and preparation method of corrosion inhibition foam water discharging agent |
| CN104694103A (en) * | 2013-12-09 | 2015-06-10 | 青岛惠城石化科技有限公司 | Surfactant compounded system with oil reservoir adaptability |
| CN105295888A (en) * | 2015-09-29 | 2016-02-03 | 中国石油天然气股份有限公司 | Discharge aiding agent for fracture acidizing, manufacturing of discharge aiding agent and use method of discharge aiding agent |
| CN106281287A (en) * | 2016-07-15 | 2017-01-04 | 北京盛昌百年石油科技有限公司 | A kind of feature of environmental protection free-floride cleanup additive and preparation method |
| CN107603585A (en) * | 2017-10-24 | 2018-01-19 | 中石化石油工程技术服务有限公司 | High-efficient, no-freon pressure break cleanup additive and preparation method |
| US20190284467A1 (en) * | 2013-03-14 | 2019-09-19 | Flotek Chemistry, Llc | Diluted microemulsions with low surface tensions |
| US20200181480A1 (en) * | 2015-11-16 | 2020-06-11 | Multi-Chem Group, Llc | Alkyl polyglycoside surfactants for use in subterranean formations |
-
2021
- 2021-12-16 CN CN202111545518.XA patent/CN114426838B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295919A (en) * | 2011-05-30 | 2011-12-28 | 西南石油大学 | High efficient fluoride-free cleanup additive used for acidifying |
| US20190284467A1 (en) * | 2013-03-14 | 2019-09-19 | Flotek Chemistry, Llc | Diluted microemulsions with low surface tensions |
| CN104694103A (en) * | 2013-12-09 | 2015-06-10 | 青岛惠城石化科技有限公司 | Surfactant compounded system with oil reservoir adaptability |
| CN103614129A (en) * | 2013-12-13 | 2014-03-05 | 成都华阳兴华化工有限公司 | Corrosion inhibition foam water discharging agent for oil-gas well and preparation method of corrosion inhibition foam water discharging agent |
| CN105295888A (en) * | 2015-09-29 | 2016-02-03 | 中国石油天然气股份有限公司 | Discharge aiding agent for fracture acidizing, manufacturing of discharge aiding agent and use method of discharge aiding agent |
| US20200181480A1 (en) * | 2015-11-16 | 2020-06-11 | Multi-Chem Group, Llc | Alkyl polyglycoside surfactants for use in subterranean formations |
| CN106281287A (en) * | 2016-07-15 | 2017-01-04 | 北京盛昌百年石油科技有限公司 | A kind of feature of environmental protection free-floride cleanup additive and preparation method |
| CN107603585A (en) * | 2017-10-24 | 2018-01-19 | 中石化石油工程技术服务有限公司 | High-efficient, no-freon pressure break cleanup additive and preparation method |
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| Publication number | Publication date |
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| CN114426838B (en) | 2022-12-20 |
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Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Chongqing Shale Gas Co.,Ltd. Patentee after: Guangyou (Shandong) Energy Technology Co.,Ltd. Address before: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: Sinopec Chongqing Shale Gas Co.,Ltd. Patentee before: Binzhou Guangyou Chemical Co.,Ltd. |