CN104327815A - Paraffin inhibitor for petroleum extraction and preparation method thereof - Google Patents
Paraffin inhibitor for petroleum extraction and preparation method thereof Download PDFInfo
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- CN104327815A CN104327815A CN201410615910.0A CN201410615910A CN104327815A CN 104327815 A CN104327815 A CN 104327815A CN 201410615910 A CN201410615910 A CN 201410615910A CN 104327815 A CN104327815 A CN 104327815A
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- 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
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Abstract
The invention relates to a paraffin inhibitor for petroleum extraction and a preparation method thereof, belonging to the technical field of paraffin inhibitors. The paraffin inhibitor for petroleum extraction is prepared from the following raw materials in parts by mass: 2-12 parts of fatty alcohol polyethenoxy ether, 2-6 parts of succinic acid, 4-12 parts of spermaceti stearic acid polyethenoxy ether, 10-19 parts of saponin powder, 1-5 parts of sodium sulfate, 2-8 parts of glyceryl monolinoleate, 3-9 parts of maleic anhydride, 15-25 parts of glycerol, 10-14 parts of ethyl acetate and 23-28 parts of ethanol. The paraffin inhibitor for petroleum extraction has excellent paraffin inhibition property (the paraffin inhibition rate is up to 90%) and favorable visbreaking property (the visbreaking rate is up to 88%). The paraffin inhibitor for petroleum extraction has the advantages of excellent high temperature resistance, excellent low temperature resistance and no equipment corrosion. The paraffin inhibitor for petroleum extraction can effectively remove blockage, thereby effectively enhancing the flowability of the oil product.
Description
Technical field
The invention belongs to paraffin inhibitor chemical technical field, be specifically related to a kind of oil production paraffin inhibitor chemical and preparation method thereof.
Background technology
In crude oil production and the defeated process of collection, wax control and viscosity reduction suppress to be technical barrier urgently to be resolved hurrily.And the major cause of crude oil wax, be because the wax be dissolved in oil will crystallization when temperature reduces.Along with oil temperature declines gradually, the solubleness of wax reduces gradually, and the wax of separating out from oil is brilliant to be increased with regard to corresponding, and wax crystalline substance overlaps each other and is connected to form three-D space structure, and the gathering of wax crystalline substance causes wax deposition to produce.General existing wax removing agent forms primarily of Wax dissolving agent, permeate agent, dispersing agent for wax and wax crystal modifier.Under the effect of wax removing agent, reduce structure and the intensity of the formation of wax crystalline substance, thus reduce wax deposition degree and the viscosity of crude oil, reach the effect of wax removal viscosity reduction further.
The most oil field of China has entered middle and later periods mining phase at present, though existing wax removing agent has certain effect, but can not meet the demand in existing oil field, to the viscosity reduction amplitude of crude oil and anti-shear performance poor, its performance can decline to a great extent at a lower temperature, even disappears.Therefore a kind of respond well paraffin inhibitor chemical just seems particularly important.
Summary of the invention
The object of this invention is to provide a kind of oil production paraffin inhibitor chemical and preparation method thereof, this oil production paraffin inhibitor chemical not only has excellent wax control, also has excellent viscosity break ratio, and high temperature resistant and resistance to low temperature excellence.
Present invention employs following technical scheme:
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 2-12 part, succsinic acid 2-6 part, cetearyl alcohol acid Soxylat A 25-7 4-12 part, Chinese honey locust powder 10-19 part, sodium sulfate 1-5 part, Masine 35-1 2-8 part, maleic anhydride 3-9 part, glycerol 15-25 part, ethyl acetate 10-14 part, ethanol 23-28 part.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 4-10 part, succsinic acid 3-5 part, cetearyl alcohol acid Soxylat A 25-7 6-10 part, Chinese honey locust powder 12-18 part, sodium sulfate 2-4 part, Masine 35-1 4-6 part, maleic anhydride 4-8 part, glycerol 17-24 part, ethyl acetate 11-13 part, ethanol 24-27 part.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 5-9 part, succsinic acid 4-5 part, cetearyl alcohol acid Soxylat A 25-7 7-9 part, Chinese honey locust powder 14-16 part, sodium sulfate 2-3 part, Masine 35-1 4-5 part, maleic anhydride 5-7 part, glycerol 19-22 part, ethyl acetate 11-12 part, ethanol 25-26 part.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 4 parts, succsinic acid 3 parts, cetearyl alcohol Soxylat A 25-7 6 parts, 12 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 4 parts, glycerol 17 parts, ethyl acetate 11 parts, ethanol 24 parts.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 10 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 10 parts, 18 parts, Chinese honey locust powder, 4 parts, sodium sulfate, Masine 35-1 6 parts, maleic anhydride 8 parts, glycerol 24 parts, ethyl acetate 13 parts, ethanol 27 parts.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 5 parts, succsinic acid 4 parts, cetearyl alcohol Soxylat A 25-7 7 parts, 14 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 5 parts, glycerol 19 parts, ethyl acetate 11 parts, ethanol 25 parts.
Described oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 9 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 9 parts, 16 parts, Chinese honey locust powder, 3 parts, sodium sulfate, Masine 35-1 5 parts, maleic anhydride 7 parts, glycerol 22 parts, ethyl acetate 12 parts, ethanol 26 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 50-60 DEG C, stirs 4-5h, adds ethyl acetate, continue to be warming up to 65-68 DEG C, stirs 1-2h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 20-30min at 40-50 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
beneficial effect
The first, oil production paraffin inhibitor chemical of the present invention not only has excellent wax control, and its inhibiting rate for wax precipitation up to 90%, can also have good viscosity-reducing performance, and its viscosity break ratio can up to 88%;
The second, oil production paraffin inhibitor chemical of the present invention has excellent high temperature resistant and resistance to low temperature, and corrosion-free to equipment;
3rd, oil production paraffin inhibitor chemical of the present invention also can effectively de-plugging, thus effectively improves the mobility of oil product.
Embodiment
The present invention at embodiment part reagent used and raw material if no special instructions all by commercial acquisition.Those skilled in the art are appreciated that the present invention when seeing embodiment, but embodiment should not be considered as limitation of the present invention
embodiment 1
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 2 parts, succsinic acid 2 parts, cetearyl alcohol Soxylat A 25-7 4 parts, 10 parts, Chinese honey locust powder, 1 part, sodium sulfate, Masine 35-1 2 parts, maleic anhydride 3 parts, glycerol 15 parts, ethyl acetate 10 parts, ethanol 23 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 50 DEG C, stirs 4h, adds ethyl acetate, continue to be warming up to 65 DEG C, stirs 1h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 20min at 40 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
embodiment 2
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 12 parts, succsinic acid 6 parts, cetearyl alcohol Soxylat A 25-7 12 parts, 19 parts, Chinese honey locust powder, 5 parts, sodium sulfate, Masine 35-1 8 parts, maleic anhydride 9 parts, glycerol 25 parts, ethyl acetate 14 parts, ethanol 28 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 60 DEG C, stirs 5h, adds ethyl acetate, continue to be warming up to 68 DEG C, stirs 2h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 30min at 50 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
embodiment 3
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 4 parts, succsinic acid 3 parts, cetearyl alcohol Soxylat A 25-7 6 parts, 12 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 4 parts, glycerol 17 parts, ethyl acetate 11 parts, ethanol 24 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 55 DEG C, stirs 4.5h, adds ethyl acetate, continue to be warming up to 66 DEG C, stirs 1.5h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 25min at 45 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
embodiment 4
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 10 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 10 parts, 18 parts, Chinese honey locust powder, 4 parts, sodium sulfate, Masine 35-1 6 parts, maleic anhydride 8 parts, glycerol 24 parts, ethyl acetate 13 parts, ethanol 27 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 52 DEG C, stirs 4.5h, adds ethyl acetate, continue to be warming up to 66 DEG C, stirs 1h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 22min at 42 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
embodiment 5
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 5 parts, succsinic acid 4 parts, cetearyl alcohol Soxylat A 25-7 7 parts, 14 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 5 parts, glycerol 19 parts, ethyl acetate 11 parts, ethanol 25 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 54 DEG C, stirs 5h, adds ethyl acetate, continue to be warming up to 67 DEG C, stirs 2h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 24min at 44 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
embodiment 6
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 9 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 9 parts, 16 parts, Chinese honey locust powder, 3 parts, sodium sulfate, Masine 35-1 5 parts, maleic anhydride 7 parts, glycerol 22 parts, ethyl acetate 12 parts, ethanol 26 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 60 DEG C, stirs 4h, adds ethyl acetate, continue to be warming up to 68 DEG C, stirs 1h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 30min at 40 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
reference examples 1
This example is with the difference of embodiment 3: do not use cetearyl alcohol acid Soxylat A 25-7 in formula, specific as follows:
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 4 parts, succsinic acid 3 parts, 12 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 4 parts, glycerol 17 parts, ethyl acetate 11 parts, ethanol 24 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 55 DEG C, stirs 4.5h, adds ethyl acetate, continue to be warming up to 66 DEG C, stirs 1.5h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, sodium sulfate, Masine 35-1, maleic anhydride are added successively in glycerol, stir, obtains mixture B;
Step 3: added by mixture A in mixture B, stir 25min at 45 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
reference examples 2
This example is with the difference of embodiment 3: do not use cetearyl alcohol acid Soxylat A 25-7 and maleic anhydride in formula, specific as follows:
Oil production paraffin inhibitor chemical, comprises the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 4 parts, succsinic acid 3 parts, 12 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, glycerol 17 parts, ethyl acetate 11 parts, ethanol 24 parts.
The preparation method of described oil production paraffin inhibitor chemical, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 55 DEG C, stirs 4.5h, adds ethyl acetate, continue to be warming up to 66 DEG C, stirs 1.5h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, sodium sulfate, Masine 35-1 are added successively in glycerol, stir, obtains mixture B;
Step 3: added by mixture A in mixture B, stir 25min at 45 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
performance test
Embodiment 1 to 6, reference examples 1 to 2 gained finished product are carried out performance test, and test-results is described in table 1 below:
Table 1 performance test data
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Reference examples 1 | Reference examples 2 | |
| Inhibiting rate for wax precipitation, % | 89 | 90 | 90 | 88 | 89 | 90 | 50 | 40 |
| Viscosity break ratio, % | 85 | 86 | 88 | 85 | 84 | 86 | 23 | 19 |
As can be seen from Table 1, products obtained therefrom of the present invention all has excellent performance, and wherein embodiment 3 can be considered most preferred embodiment.
The performance test data of table 2 at-30 DEG C
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Reference examples 1 | Reference examples 2 | |
| Inhibiting rate for wax precipitation, % | 88 | 87 | 90 | 89 | 88 | 89 | 20 | 18 |
| Viscosity break ratio, % | 86 | 85 | 87 | 86 | 82 | 85 | 10 | 12 |
From upper table 2, finished product of the present invention still has good performance at low temperatures, and performance remains unchanged substantially.
Claims (8)
1. oil production paraffin inhibitor chemical, it is characterized in that, comprise the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 2-12 part, succsinic acid 2-6 part, cetearyl alcohol acid Soxylat A 25-7 4-12 part, Chinese honey locust powder 10-19 part, sodium sulfate 1-5 part, Masine 35-1 2-8 part, maleic anhydride 3-9 part, glycerol 15-25 part, ethyl acetate 10-14 part, ethanol 23-28 part.
2. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 4-10 part, succsinic acid 3-5 part, cetearyl alcohol acid Soxylat A 25-7 6-10 part, Chinese honey locust powder 12-18 part, sodium sulfate 2-4 part, Masine 35-1 4-6 part, maleic anhydride 4-8 part, glycerol 17-24 part, ethyl acetate 11-13 part, ethanol 24-27 part.
3. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: fatty alcohol-polyoxyethylene ether 5-9 part, succsinic acid 4-5 part, cetearyl alcohol acid Soxylat A 25-7 7-9 part, Chinese honey locust powder 14-16 part, sodium sulfate 2-3 part, Masine 35-1 4-5 part, maleic anhydride 5-7 part, glycerol 19-22 part, ethyl acetate 11-12 part, ethanol 25-26 part.
4. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 4 parts, succsinic acid 3 parts, cetearyl alcohol Soxylat A 25-7 6 parts, 12 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 4 parts, glycerol 17 parts, ethyl acetate 11 parts, ethanol 24 parts.
5. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 10 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 10 parts, 18 parts, Chinese honey locust powder, 4 parts, sodium sulfate, Masine 35-1 6 parts, maleic anhydride 8 parts, glycerol 24 parts, ethyl acetate 13 parts, ethanol 27 parts.
6. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 5 parts, succsinic acid 4 parts, cetearyl alcohol Soxylat A 25-7 7 parts, 14 parts, Chinese honey locust powder, 2 parts, sodium sulfate, Masine 35-1 4 parts, maleic anhydride 5 parts, glycerol 19 parts, ethyl acetate 11 parts, ethanol 25 parts.
7. oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: the acid of fatty alcohol-polyoxyethylene ether 9 parts, succsinic acid 5 parts, cetearyl alcohol Soxylat A 25-7 9 parts, 16 parts, Chinese honey locust powder, 3 parts, sodium sulfate, Masine 35-1 5 parts, maleic anhydride 7 parts, glycerol 22 parts, ethyl acetate 12 parts, ethanol 26 parts.
8. the preparation method of oil production paraffin inhibitor chemical according to claim 1, it is characterized in that, step is as follows:
Step one: according to quality proportioning, adds in ethanol by Chinese honey locust powder, is warming up to 50-60 DEG C, stirs 4-5h, adds ethyl acetate, continue to be warming up to 65-68 DEG C, stirs 1-2h, obtains mixture A;
Step 2: fatty alcohol-polyoxyethylene ether, succsinic acid, cetearyl alcohol acid Soxylat A 25-7, sodium sulfate, Masine 35-1, maleic anhydride are added in glycerol successively, stirs, obtain mixture B;
Step 3: added by mixture A in mixture B, stir 20-30min at 40-50 DEG C, filters, gets filtrate, treat naturally cooling, obtain described oil production paraffin inhibitor chemical.
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| CN201410615910.0A CN104327815A (en) | 2014-11-05 | 2014-11-05 | Paraffin inhibitor for petroleum extraction and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105062450A (en) * | 2015-08-25 | 2015-11-18 | 中国石油化工股份有限公司 | Oil-based paraffin remover and inhibitor |
| CN108997992A (en) * | 2018-09-05 | 2018-12-14 | 石家庄长宏能源科技有限公司 | A kind of oilfield environmentally friendly Wax removing agent and preparation method thereof |
| CN110577828A (en) * | 2019-09-06 | 2019-12-17 | 西安长庆化工集团有限公司 | Nano-particle wax-proof pour point depressant for oil well as preparation method and application thereof |
| CN111410947A (en) * | 2020-03-20 | 2020-07-14 | 克拉玛依新科澳实验检测有限公司 | Composite wax-proofing agent and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062450A (en) * | 2015-08-25 | 2015-11-18 | 中国石油化工股份有限公司 | Oil-based paraffin remover and inhibitor |
| CN108997992A (en) * | 2018-09-05 | 2018-12-14 | 石家庄长宏能源科技有限公司 | A kind of oilfield environmentally friendly Wax removing agent and preparation method thereof |
| CN108997992B (en) * | 2018-09-05 | 2021-04-30 | 石家庄长宏能源科技有限公司 | Environment-friendly paraffin removal and prevention agent for oil well of oil field and preparation method thereof |
| CN110577828A (en) * | 2019-09-06 | 2019-12-17 | 西安长庆化工集团有限公司 | Nano-particle wax-proof pour point depressant for oil well as preparation method and application thereof |
| CN111410947A (en) * | 2020-03-20 | 2020-07-14 | 克拉玛依新科澳实验检测有限公司 | Composite wax-proofing agent and preparation method thereof |
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Application publication date: 20150204 |