CN116814234A - Discharge assisting agent for fracturing and preparation method and application thereof - Google Patents
Discharge assisting agent for fracturing and preparation method and application thereof Download PDFInfo
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- CN116814234A CN116814234A CN202310777408.9A CN202310777408A CN116814234A CN 116814234 A CN116814234 A CN 116814234A CN 202310777408 A CN202310777408 A CN 202310777408A CN 116814234 A CN116814234 A CN 116814234A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000000654 additive Substances 0.000 claims abstract description 46
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 44
- 230000000996 additive effect Effects 0.000 claims abstract description 42
- -1 polyoxyethylene Polymers 0.000 claims abstract description 31
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 27
- 150000001408 amides Chemical class 0.000 claims abstract description 20
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 19
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 19
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 19
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 16
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 20
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 12
- 229930195729 fatty acid Natural products 0.000 claims description 12
- 239000000194 fatty acid Substances 0.000 claims description 12
- 150000004665 fatty acids Chemical class 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation 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
- C09K8/602—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
- C09K8/602—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
- C09K8/62—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)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The application provides a cleanup additive for fracturing and a preparation method and application thereof, belonging to the technical field of oilfield development. In the cleanup additive for fracturing, the polyoxyethylene nonionic surfactant has extremely high surface activity and high stability, and can improve the overall stability of a cleanup additive system; the amide nonionic surfactant can be compatible with various surfactants and can be completely dissolved in different types of additives, so that the surface tension and the interfacial tension are reduced. The application utilizes the combination of different nonionic surfactants to generate synergistic effect, can greatly reduce the surface tension and interfacial tension of the cleanup additive and improve the flowback effect of the fracturing fluid. The surface activity can be obviously improved by compounding the lignosulfonate and the rosin sulfonate, so that the surface tension is further reduced. The cleanup additive for fracturing provided by the application has low surface tension (25 ℃, < 21 mN/m) and low interfacial tension (25 ℃, < 0.25 mN/m).
Description
Technical Field
The application relates to the technical field of oilfield development, in particular to a drainage aid for fracturing, a preparation method and application thereof.
Background
Fracturing is an important measure for the transformation of low-permeability and ultra-low-permeability oil and gas reservoirs, and is a dominant technology for realizing the effective development of compact oil and gas reservoirs. In the process of acidizing and fracturing an oil well, the flowback fluid in the well needs to be rapidly discharged to the ground, and the flowback fluid is usually rapidly discharged to the ground by means of the pressure of a stratum. When the formation pressure is gradually weakened, the flowback speed of the flowback fluid in the well is obviously reduced, and the bottom layer is blocked after residues in the flowback fluid are separated out, so that secondary pollution of the formation is caused, and the construction progress and efficiency are affected. In order to solve the problem of difficult flowback of flowback fluid after oil reservoir acidizing and fracturing, the use of a cleanup additive is a conventional means.
The cleanup additive is a chemical capable of helping the working residual liquid in the processes of acidizing, fracturing and the like to flow back from the stratum, can reduce the surface tension and interfacial tension of the fracturing fluid, increases the flow back energy of the flow back fluid, and simultaneously reduces the damage of the fracturing fluid to the stratum. Therefore, the cleanup additive for fracturing, which can obviously reduce the surface tension and the interfacial tension, is sought, the flowback rate of the fracturing fluid is improved, the water sensitivity and the water locking damage of the fracturing fluid to the reservoir are reduced, and the cleanup additive has important practical significance.
Disclosure of Invention
The application aims to provide a cleanup additive for fracturing, and a preparation method and application thereof.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a cleanup additive for fracturing, which comprises the following preparation raw materials in parts by mass:
30-50 parts of polyoxyethylene type nonionic surfactant, 10-30 parts of amide type nonionic surfactant, 20-30 parts of lignosulfonate, 20-30 parts of rosin sulfonate and 50-60 parts of low molecular alcohol.
Preferably, the polyoxyethylene type nonionic surfactant comprises alkylphenol ethoxylates, polyoxyethylene fatty alcohol ethers or fatty acid polyoxyethylene ethers.
Preferably, the fatty acid polyoxyethylene ether is one or more of SG-40, SG-50 and SG-100.
Preferably, the amide type nonionic surfactant is 6501 surfactant.
Preferably, the low molecular alcohol comprises glycerol or methanol.
The application provides a preparation method of the cleanup additive for fracturing, which comprises the following steps:
the polyoxyethylene nonionic surfactant, the amide nonionic surfactant, the lignin sulfonate, the rosin sulfonate and the low molecular alcohol are mixed to obtain the cleanup additive for fracturing.
Preferably, the mixing is performed under stirring conditions, and the stirring speed is 100-150 rpm.
Preferably, the temperature of the mixing is 50-65 ℃.
Preferably, the mixing time is 1 to 3 hours.
The application provides application of the drainage aid for fracturing or the drainage aid for fracturing prepared by the preparation method in the technical scheme in oilfield exploitation.
In the cleanup additive for fracturing, the polyoxyethylene nonionic surfactant has extremely high surface activity, can reduce the surface tension of a solution to an extremely low level, has high stability, and can improve the overall stability of a cleanup additive system; the amide nonionic surfactant can be compatible with various surfactants and can be completely dissolved in different types of additives, so that the surface tension and the interfacial tension are reduced. According to the application, the polyoxyethylene nonionic surfactant and the amide nonionic surfactant are compounded to generate a synergistic effect, so that the surface tension and the interfacial tension of the cleanup additive can be greatly reduced, and the flowback effect of the fracturing fluid is improved. The surface activity can be obviously improved by compounding the lignosulfonate and the rosin sulfonate, so that the surface tension is further reduced. The cleanup additive for fracturing provided by the application has low surface tension (25 ℃, < 21 mN/m) and low interfacial tension (25 ℃, < 0.25 mN/m).
The preparation method of the cleanup additive for fracturing has the advantages of simple steps, simple raw materials and stable performance of the cleanup additive system.
The cleanup additive for fracturing disclosed by the application has good compatibility with fracturing fluid, and the self performance of the fracturing fluid is not affected after the cleanup additive is compounded.
Detailed Description
The application provides a cleanup additive for fracturing, which comprises the following preparation raw materials in parts by mass:
30-50 parts of polyoxyethylene type nonionic surfactant, 10-30 parts of amide type nonionic surfactant, 20-30 parts of lignosulfonate, 20-30 parts of rosin sulfonate and 50-60 parts of low molecular alcohol.
The raw materials used in the present application are commercially available products well known in the art unless specified otherwise.
The preparation raw materials of the cleanup additive for fracturing comprise 30-50 parts by mass, preferably 35-55 parts by mass, more preferably 40-50 parts by mass of polyoxyethylene nonionic surfactant. In the present application, the polyoxyethylene type nonionic surfactant preferably includes alkylphenol ethoxylates, polyoxyethylene fatty alcohol ethers, or fatty acid polyoxyethylene ethers; the fatty acid polyoxyethylene ether is preferably one or more of SG-40, SG-50 and SG-100, and when the fatty acid polyoxyethylene ether is more than two of the above, the proportion of the different types of fatty acid polyoxyethylene ether is not particularly limited, and the fatty acid polyoxyethylene ether can be adjusted according to actual requirements.
The preparation raw materials of the discharge assisting agent for fracturing comprise 10-30 parts by weight, preferably 15-28 parts by weight, more preferably 20-25 parts by weight, and even more preferably 22-23 parts by weight of the amide nonionic surfactant based on the mass parts of the polyoxyethylene nonionic surfactant. In the present application, the amide type nonionic surfactant is preferably 6501 surfactant.
The preparation raw materials of the drainage aid for fracturing comprise 20-30 parts by weight, preferably 22-28 parts by weight, more preferably 23-26 parts by weight, and even more preferably 24-25 parts by weight of lignosulfonate based on the mass parts of the polyoxyethylene nonionic surfactant.
The preparation raw materials of the discharge aid for fracturing comprise, by mass, 20-30 parts of rosin-based sulfonate, preferably 22-28 parts, more preferably 23-26 parts, and even more preferably 24-25 parts, based on the polyoxyethylene nonionic surfactant. The rosin-based sulfonate is not particularly limited in the present application, and may be prepared according to a preparation method well known in the art or obtained in a well known manner.
The preparation raw materials of the discharge assisting agent for fracturing comprise 50-60 parts by weight of low molecular alcohol, preferably 52-58 parts by weight, more preferably 53-56 parts by weight, and even more preferably 54-55 parts by weight based on the mass parts of the polyoxyethylene nonionic surfactant. In the present application, the low molecular alcohol preferably includes glycerol or methanol.
The application provides a preparation method of the cleanup additive for fracturing, which comprises the following steps:
the polyoxyethylene nonionic surfactant, the amide nonionic surfactant, the lignin sulfonate, the rosin sulfonate and the low molecular alcohol are mixed to obtain the cleanup additive for fracturing.
The order of adding the raw materials in the mixing process is not particularly limited, and the raw materials are uniformly mixed according to a process well known in the art.
In the present application, the mixing is preferably performed under stirring conditions, and the rotation speed of the stirring is preferably 100 to 150rpm, more preferably 110 to 130rpm.
In the present application, the temperature of the mixing is preferably 50 to 65 ℃, more preferably 55 to 60 ℃, and the time of the mixing is preferably 1 to 3 hours, more preferably 1.5 to 2.5 hours.
The application provides application of the drainage aid for fracturing or the drainage aid for fracturing prepared by the preparation method in the technical scheme in oilfield exploitation. The method of application of the present application is not particularly limited, and may be applied according to methods well known in the art.
The technical solutions provided by the present application are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present application.
In the following examples, the rosin-based sulfonate was prepared according to the methods described in the prior art (synthesis and performance study of rosin-based sulfonate surfactants, gu Weigong, biomass chemistry engineering, 2008, (stage 4)).
Example 1
The cleanup additive for fracturing provided in this embodiment is prepared from the following raw materials: 30 parts of polyoxyethylene nonionic surfactant (alkylphenol ethoxylate), 15 parts of amide nonionic surfactant (6501 surfactant), 25 parts of lignosulfonate, 25 parts of rosin sulfonate and 60 parts of low molecular alcohol (glycerol);
the preparation method comprises the steps of sequentially adding the raw materials into a mixing tank, and mixing for 2 hours at 60 ℃ under the stirring condition of 150rpm to obtain the discharge assisting agent for fracturing.
Example 2
The cleanup additive for fracturing provided in this embodiment is prepared from the following raw materials: 35 parts of polyoxyethylene nonionic surfactant (polyoxyethylene fatty alcohol ether), 10 parts of amide nonionic surfactant (6501 surfactant), 20 parts of lignosulfonate, 20 parts of rosin sulfonate and 55 parts of low molecular alcohol (methanol);
the preparation method comprises the steps of sequentially adding the raw materials into a mixing tank, and mixing for 3 hours at 65 ℃ under the stirring condition of 130rpm to obtain the discharge assisting agent for fracturing.
Example 3
The cleanup additive for fracturing provided in this embodiment is prepared from the following raw materials: 40 parts of polyoxyethylene nonionic surfactant (fatty acid polyoxyethylene ether SG-40), 20 parts of amide nonionic surfactant (6501 surfactant), 30 parts of lignosulfonate, 30 parts of rosin sulfonate and 55 parts of low molecular alcohol (glycerol);
the preparation method comprises the steps of sequentially adding the raw materials into a mixing tank, and mixing for 3 hours at 55 ℃ under the stirring condition of 120rpm to obtain the discharge assisting agent for fracturing.
Example 4
The cleanup additive for fracturing provided in this embodiment is prepared from the following raw materials: 50 parts of polyoxyethylene nonionic surfactant (fatty acid polyoxyethylene ether SG-50), 25 parts of amide nonionic surfactant (6501 surfactant), 30 parts of lignosulfonate, 25 parts of rosin sulfonate and 60 parts of low molecular alcohol (glycerol);
the preparation method comprises the steps of sequentially adding the raw materials into a mixing tank, and mixing for 1h at 65 ℃ under the stirring condition of 150rpm to obtain the discharge assisting agent for fracturing.
Example 5
The cleanup additive for fracturing provided in this embodiment is prepared from the following raw materials: 45 parts of polyoxyethylene nonionic surfactant (fatty acid polyoxyethylene ether SG-100), 25 parts of amide nonionic surfactant (6501 surfactant), 30 parts of lignosulfonate, 30 parts of rosin sulfonate and 55 parts of low molecular alcohol (methanol);
the preparation method comprises the steps of sequentially adding the raw materials into a mixing tank, and mixing for 1h at 50 ℃ under the stirring condition of 130rpm to obtain the discharge assisting agent for fracturing.
Comparative example 1
The only difference from example 1 is that: no amide type nonionic surfactant was added.
Comparative example 2
The only difference from example 1 is that: no rosin sulfonate was added.
Comparative example 3
The only difference from example 1 is that: no lignosulfonate was added.
Performance testing
The performance of the cleanup additives of examples 1 to 5 and comparative examples 1 to 3 were compared with the performance of the cleanup additive for fracture acidizing according to the QSY 17376-2017 technical specification and the performance of the cleanup additive for fracture acidizing of SY_T5755-1995, the sample use concentration was 0.5% by mass, the test temperature was 25℃and the test results were shown in Table 1.
Table 1 surface tension and interfacial tension of the cleanup additives of examples 1 to 5 and comparative examples 1 to 3
| Case (B) | Surface tension (mN/m) | Interfacial tension (mN/m) | Flow back rate (%) |
| Example 1 | 20.32 | 0.20 | 29 |
| Example 2 | 20.36 | 0.21 | 28.6 |
| Example 3 | 20.53 | 0.23 | 27.5 |
| Example 4 | 20.65 | 0.22 | 28.2 |
| Example 5 | 20.80 | 0.24 | 27.2 |
| Comparative example 1 | 21.2 | 0.52 | 23.2 |
| Comparative example 2 | 21.3 | 0.46 | 24.3 |
| Comparative example 3 | 21.1 | 0.53 | 23.1 |
As shown in table 1, the fracturing cleanup additive provided by the application can obviously reduce the surface tension of water and the interfacial tension between oil and water, and is more beneficial to improving the flowback effect of fracturing fluid, thereby reducing the damage to stratum. Further, as is clear from a comparison of examples 1 to 5 and comparative examples 1 to 3, the present application further reduces interfacial tension and surface tension by the synergistic effect of polyoxyethylene type nonionic surfactant, amide type nonionic surfactant, lignin sulfonate and rosin sulfonate, and improves flowback effect of the cleanup additive for fracturing.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. The cleanup additive for fracturing is characterized by comprising the following preparation raw materials in parts by mass:
30-50 parts of polyoxyethylene type nonionic surfactant, 10-30 parts of amide type nonionic surfactant, 20-30 parts of lignosulfonate, 20-30 parts of rosin sulfonate and 50-60 parts of low molecular alcohol.
2. The cleanup additive for fracturing according to claim 1, wherein the polyoxyethylene nonionic surfactant comprises alkylphenol ethoxylates, polyoxyethylene fatty alcohol ethers or fatty acid polyoxyethylene ethers.
3. The cleanup additive for fracturing according to claim 2, wherein said fatty acid polyoxyethylene ether is one or more of SG-40, SG-50 and SG-100.
4. The cleanup additive for fracturing according to claim 1, wherein said amide type nonionic surfactant is 6501 surfactant.
5. The fracturing venting aid of claim 1, wherein the low molecular alcohol comprises glycerol or methanol.
6. The method for producing a cleanup additive for fracturing according to any one of claims 1 to 5, comprising the steps of:
the polyoxyethylene nonionic surfactant, the amide nonionic surfactant, the lignin sulfonate, the rosin sulfonate and the low molecular alcohol are mixed to obtain the cleanup additive for fracturing.
7. The method according to claim 6, wherein the mixing is performed under stirring at a rotation speed of 100 to 150rpm.
8. The method according to claim 6, wherein the temperature of the mixing is 50 to 65 ℃.
9. The method according to claim 6 or 8, wherein the mixing time is 1 to 3 hours.
10. Use of the cleanup additive for fracturing according to any one of claims 1 to 5 or the cleanup additive for fracturing prepared by the preparation method according to any one of claims 6 to 9 in oilfield exploitation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310777408.9A CN116814234A (en) | 2023-06-28 | 2023-06-28 | Discharge assisting agent for fracturing and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310777408.9A CN116814234A (en) | 2023-06-28 | 2023-06-28 | Discharge assisting agent for fracturing and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117987134A (en) * | 2024-04-07 | 2024-05-07 | 山东德坤工贸有限公司 | Cleanup additive for oil well fracturing and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117987134A (en) * | 2024-04-07 | 2024-05-07 | 山东德坤工贸有限公司 | Cleanup additive for oil well fracturing and production method |
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