CN116200177A - High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon - Google Patents
High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon Download PDFInfo
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- CN116200177A CN116200177A CN202111440926.9A CN202111440926A CN116200177A CN 116200177 A CN116200177 A CN 116200177A CN 202111440926 A CN202111440926 A CN 202111440926A CN 116200177 A CN116200177 A CN 116200177A
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- China
- Prior art keywords
- saturated
- isoparaffin
- fraction
- aromatic hydrocarbon
- saturated isoparaffin
- 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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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 30
- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 28
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 82
- 239000000203 mixture Substances 0.000 claims description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- -1 alkyl glycoside Chemical class 0.000 claims description 4
- 229930182470 glycoside Natural products 0.000 claims description 4
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 claims description 2
- CCLNWKPQPZBSEI-UHFFFAOYSA-N 2,3-diethoxypropan-1-ol Chemical compound CCOCC(CO)OCC CCLNWKPQPZBSEI-UHFFFAOYSA-N 0.000 claims description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 2
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 claims description 2
- 239000001993 wax Substances 0.000 abstract description 13
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 238000006731 degradation reaction Methods 0.000 abstract description 8
- 239000003960 organic solvent Substances 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 125000001741 organic sulfur group Chemical group 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 210000003298 dental enamel Anatomy 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- 239000003791 organic solvent mixture Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000008096 xylene 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- 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)
- Detergent Compositions (AREA)
Abstract
The invention provides an environment-friendly oil-based paraffin remover without aromatic hydrocarbon and with high flash point, which comprises the following components in parts by weight: 5 to 30 percent of saturated isoparaffin of the fraction at 180 to 220 ℃,20 to 80 percent of saturated isoparaffin of the fraction at 200 to 240 ℃, 5 to 60 percent of saturated isoparaffin of the fraction at 210 to 250 ℃ and 5 to 20 percent of saturated isoparaffin of the fraction at 230 to 270 ℃. The invention solves the problem of production safety of wax remover caused by low flash point of organic solvent; solves the toxicity problem caused by oily aromatic hydrocarbon; solves the problem of difficult degradation of the treating agent.
Description
Technical Field
The invention belongs to the technical field of paraffin removal agents, and particularly relates to an environment-friendly oil-based paraffin removal agent with high flash point and no aromatic hydrocarbon.
Background
The oil-based paraffin remover is mainly used for removing paraffin on oil pipes, sucker rods and other pipes in oil extraction wells of oil fields, is widely applied due to high paraffin dissolution speed and high paraffin removal efficiency, and is generally composed of an organic solvent or a mixture of an organic solvent and a surfactant, wherein the organic solvent can be one or more of aromatic hydrocarbon-containing organic solvents such as benzene, toluene, xylene, mixed benzene and the like, can be one or more of crude oil distillate oil types such as gasoline, kerosene, diesel oil and the like, can be one or more of saturated alkanes such as pentane, hexane or heptane and the like, or can be a mixture of the organic solvents.
The oil-based paraffin remover has the characteristics of low flash point (generally less than 40 ℃ and less than 60 ℃), containing toxic substances such as aromatic hydrocarbon and the like, having high volatilization speed, being not easy to biodegrade, being safe and environment-friendly, and the like; for example, benzene has a flash point of-11 ℃; toluene flash point 4 ℃ and specific volatilization speed 190; the flash point of the dimethylbenzene is 25 ℃ and the specific volatilization speed is 70; these aromatic components are degradable only by the use of specially domesticated microorganisms. The flash point of kerosene is about 38 ℃ and the flash point of kerosene contains 10 to 15 percent of aromatic hydrocarbon; the flash point of diesel oil is 40-60 deg.c, etc. and the arene content is no more than 11%. The flash point of saturated alkanes such as pentane, hexane or heptane is lower, typically below 0 ℃.
When the organic solvent mixture is produced and used, the requirements on safety and environmental protection are high, especially in summer; meanwhile, with the continuous improvement of the national requirements on environmental protection and the high attention on the personal health of staff, the production, storage and use of the wax remover are more and more limited.
Although domestic scientists are improving the oil-based paraffin remover all the time, the safety performance of the oil-based paraffin remover is improved, such as oil-in-water emulsion is improved, such as adding a small amount of water and surfactant, the paraffin remover is required to play a role, the emulsion can be broken under underground conditions to release an organic solvent, the emulsion product on the ground is required to be not too stable, otherwise, the emulsion on the ground is too stable, and the emulsion cannot be broken under the ground, so that contradiction is formed, the use effect of the emulsion-type paraffin remover is not good all the time, and the range of improving the flash point of the emulsion-type paraffin remover is limited; in addition, there are problems as follows:
1. solves the problem of the production safety of wax remover caused by low flash point of organic solvent.
2. The toxicity problem caused by the oily aromatic hydrocarbon can not be solved.
3. The problem of environmental protection and easy degradation of the treating agent can not be solved.
Based on the above problems, an environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point is provided to solve the above problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides an environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point, which comprises the following components in parts by weight: 5 to 30 percent of saturated isoparaffin of the fraction at 180 to 220 ℃,20 to 80 percent of saturated isoparaffin of the fraction at 200 to 240 ℃, 5 to 60 percent of saturated isoparaffin of the fraction at 210 to 250 ℃ and 5 to 20 percent of saturated isoparaffin of the fraction at 230 to 270 ℃.
Preferably, the composition comprises the following components in parts by weight: 25% of saturated isoparaffin of 180-220 ℃, 46% of saturated isoparaffin of 200-240 ℃, 24% of saturated isoparaffin of 210-250 ℃ and 5% of saturated isoparaffin of 230-270 ℃.
Preferably, the composition comprises the following components in parts by weight: 5% of saturated isoparaffin of 180-220 ℃, 60% of saturated isoparaffin of 200-240 ℃, 20% of saturated isoparaffin of 210-250 ℃ and 15% of saturated isoparaffin of 230-270 ℃.
Preferably, the composition comprises the following components in parts by weight: 10% of saturated isoparaffin of a fraction at 180-220 ℃, 40% of saturated isoparaffin of a fraction at 200-240 ℃, 30% of saturated isoparaffin of a fraction at 210-250 ℃ and 20% of saturated isoparaffin of a fraction at 230-270 ℃.
Preferably, the composition comprises the following components in parts by weight: 8% of saturated isoparaffin of 180-220 ℃, 32% of saturated isoparaffin of 200-240 ℃, 24% of saturated isoparaffin of 210-250 ℃ and 16% of saturated isoparaffin of 230-270 ℃.
Preferably, the composition comprises the following components in parts by weight: 20% of saturated isoparaffin of 180-220 ℃, 36.8% of saturated isoparaffin of 200-240 ℃, 19.2% of saturated isoparaffin of 210-250 ℃ and 4% of saturated isoparaffin of 230-270 ℃.
Preferably, the composition comprises the following components in parts by weight: 70-90% of saturated isoparaffin mixture, 5-15% of alkyl glycoside and 5-20% of alcohol ether.
Preferably, the alkyl glycoside is one or more of APG0810, APG1214, APG0814, APG0816 and APG 1216.
Preferably, the alcohol ether is one or more of ethylene glycol monobutyl ether, diethylene glycol butyl ether, ethylene glycol diethyl ether, diethylene glycol diethyl ether and glycerol diethyl ether.
Compared with the prior art, the invention has the beneficial effects that: the environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point has the aromatic hydrocarbon content less than 0.1%, the flash point more than 80 ℃, the organic chlorine and the organic sulfur both less than 2mg/kg, and the matrix removal rate after 28 days degradation is more than 60%, belongs to easily degradable substances, has the paraffin dissolving speed more than 0.025g/min and the saturated paraffin dissolving amount more than 35g/mL, and meets the application technical requirement that the paraffin removing rate in the industry standard SY/T6300-2009 is more than or equal to 0.016 g/min.
Detailed Description
The invention is further described below:
example 1:
operating at normal temperature and normal pressure, cleaning the enamel stirred tank or the stainless steel stirred tank, and draining residual water; respectively weighing 25 kg of saturated isoparaffin of 180-220 ℃ fraction, 46 kg of saturated isoparaffin of 200-240 ℃ fraction, 24 kg of saturated isoparaffin of 210-250 ℃ fraction and 5 kg of saturated isoparaffin of 230-270 ℃ fraction according to the sequence, stirring and mixing for 10 minutes, wherein the flash point of the obtained product is 82 ℃, the wax dissolution rate is 0.026g/min, the saturated wax dissolution amount is 0.38g/mL, the organic chloride and the organic sulfur are respectively less than 2mg/kg, the aromatic hydrocarbon content is less than 0.1%, and the matrix removal rate after 28 days degradation is 72%.
Example 2:
operating at normal temperature and normal pressure. Cleaning the enamel stirred tank or the stainless steel stirred tank, and draining residual water; respectively weighing 5 kg of saturated isoparaffin of 180-220 ℃ fraction, 60 kg of saturated isoparaffin of 200-240 ℃ fraction, 20 kg of saturated isoparaffin of 210-250 ℃ fraction and 15 kg of saturated isoparaffin of 230-270 ℃ fraction according to the sequence, stirring and mixing for 10 minutes, wherein the flash point of the obtained product is 84 ℃, the wax dissolution rate is 0.022g/min, the saturated wax dissolution amount is 0.36g/mL, the organic chloride and the organic sulfur are respectively less than 2mg/kg, the aromatic hydrocarbon content is less than 0.1%, and the matrix removal rate after 28 days degradation is 68%.
Example 3:
operating at normal temperature and normal pressure. Cleaning the enamel stirred tank or the stainless steel stirred tank, and draining residual water; respectively weighing 10 kg of saturated isoparaffin of 180-220 ℃ fraction, 40 kg of saturated isoparaffin of 200-240 ℃ fraction, 30 kg of saturated isoparaffin of 210-250 ℃ fraction and 20 kg of saturated isoparaffin of 230-270 ℃ fraction according to the sequence, and stirring and mixing for 10 minutes. The flash point of the product obtained according to the formula is 90 ℃, the wax dissolution speed is 0.028g/min, the saturated wax dissolution amount is 0.35g/mL, the organic chlorine and the organic sulfur are respectively less than 2mg/kg, the aromatic hydrocarbon content is less than 0.1%, and the matrix removal rate after 28 days of degradation is 62%.
Example 4:
operating at normal temperature and normal pressure. Cleaning the enamel stirred tank or the stainless steel stirred tank, and draining residual water; 8 kg of saturated isoparaffin with 180-220 ℃ fraction, 32 kg of saturated isoparaffin with 200-240 ℃ fraction, 24 kg of saturated isoparaffin with 210-250 ℃ fraction and 16 kg of saturated isoparaffin with 230-270 ℃ fraction are respectively weighed according to the sequence, stirred and mixed for 10 minutes, and 10 kg of APG0810 and 10 kg of ethylene glycol monobutyl ether are continuously added, stirred and mixed for 10 minutes. The flash point of the product obtained according to the formula is 90 ℃, the wax dissolution speed is 0.030g/min, the saturated wax dissolution amount is 0.42g/mL, the organic chlorine and the organic sulfur are respectively less than 2mg/kg, the aromatic hydrocarbon content is less than 0.1%, and the matrix removal rate is 65% after 28 days of degradation.
Example 5:
operating at normal temperature and normal pressure. Cleaning the enamel stirred tank or the stainless steel stirred tank, and draining residual water; respectively weighing 20 kg of saturated isoparaffin of 180-220 ℃ fraction, 36.8 kg of saturated isoparaffin of 200-240 ℃ fraction, 19.2 kg of saturated isoparaffin of 210-250 ℃ fraction and 4 kg of saturated isoparaffin of 230-270 ℃ fraction according to the sequence, stirring and mixing for 10 minutes, continuously adding 8 kg of APG1214 and 12 kg of ethylene glycol diethyl ether, and stirring and mixing for 10 minutes. The flash point of the product obtained according to the formula is 85 ℃, the wax dissolving speed is 0.032g/min, the saturated wax dissolving amount is 0.45g/mL, the organic chlorine and the organic sulfur are respectively less than 2mg/kg, the aromatic hydrocarbon content is less than 0.1%, and the matrix removal rate after 28 days of degradation is 64%.
By using the technical scheme of the invention or under the inspired by the technical scheme of the invention, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical effects fall into the protection scope of the invention.
Claims (9)
1. An environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point is characterized by comprising the following components in parts by weight: 5 to 30 percent of saturated isoparaffin of the fraction at 180 to 220 ℃,20 to 80 percent of saturated isoparaffin of the fraction at 200 to 240 ℃, 5 to 60 percent of saturated isoparaffin of the fraction at 210 to 250 ℃ and 5 to 20 percent of saturated isoparaffin of the fraction at 230 to 270 ℃.
2. The environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 25% of saturated isoparaffin of 180-220 ℃, 46% of saturated isoparaffin of 200-240 ℃, 24% of saturated isoparaffin of 210-250 ℃ and 5% of saturated isoparaffin of 230-270 ℃.
3. The environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 5% of saturated isoparaffin of 180-220 ℃, 60% of saturated isoparaffin of 200-240 ℃, 20% of saturated isoparaffin of 210-250 ℃ and 15% of saturated isoparaffin of 230-270 ℃.
4. The environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 10% of saturated isoparaffin of a fraction at 180-220 ℃, 40% of saturated isoparaffin of a fraction at 200-240 ℃, 30% of saturated isoparaffin of a fraction at 210-250 ℃ and 20% of saturated isoparaffin of a fraction at 230-270 ℃.
5. The environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 8% of saturated isoparaffin of 180-220 ℃, 32% of saturated isoparaffin of 200-240 ℃, 24% of saturated isoparaffin of 210-250 ℃ and 16% of saturated isoparaffin of 230-270 ℃.
6. The environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 20% of saturated isoparaffin of 180-220 ℃, 36.8% of saturated isoparaffin of 200-240 ℃, 19.2% of saturated isoparaffin of 210-250 ℃ and 4% of saturated isoparaffin of 230-270 ℃.
7. An environment-friendly oil-based paraffin remover without aromatic hydrocarbon with high flash point is characterized by comprising the following components in parts by weight: 70-90% of saturated isoparaffin mixture, 5-15% of alkyl glycoside and 5-20% of alcohol ether.
8. The high flash point environment-friendly oil-based paraffin remover without aromatic hydrocarbon of claim 7, wherein the alkyl glycoside is one or more of APG0810, APG1214, APG0814, APG0816 and APG 1216.
9. The high flash point environment-friendly oil-based paraffin remover without aromatic hydrocarbon as claimed in claim 7, wherein the alcohol ether is one or more of ethylene glycol monobutyl ether, diethylene glycol butyl ether, ethylene glycol diethyl ether, diethylene glycol diethyl ether and glycerol diethyl ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440926.9A CN116200177A (en) | 2021-11-30 | 2021-11-30 | High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440926.9A CN116200177A (en) | 2021-11-30 | 2021-11-30 | High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116200177A true CN116200177A (en) | 2023-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111440926.9A Pending CN116200177A (en) | 2021-11-30 | 2021-11-30 | High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116200177A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946222A (en) * | 2014-03-24 | 2015-09-30 | 中国石油化工股份有限公司 | Oil-base paraffin remover for oil wells |
| CN107828396A (en) * | 2017-10-24 | 2018-03-23 | 中国石油天然气股份有限公司 | High flashing point environment-friendly paraffin remover |
| CN108467716A (en) * | 2018-03-28 | 2018-08-31 | 中国石油化工股份有限公司 | A kind of oil-base paraffin remover |
-
2021
- 2021-11-30 CN CN202111440926.9A patent/CN116200177A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946222A (en) * | 2014-03-24 | 2015-09-30 | 中国石油化工股份有限公司 | Oil-base paraffin remover for oil wells |
| CN107828396A (en) * | 2017-10-24 | 2018-03-23 | 中国石油天然气股份有限公司 | High flashing point environment-friendly paraffin remover |
| CN108467716A (en) * | 2018-03-28 | 2018-08-31 | 中国石油化工股份有限公司 | A kind of oil-base paraffin remover |
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