CN116179176A - Autogenous heat viscosity-reducing system and application thereof - Google Patents
Autogenous heat viscosity-reducing system and application thereof Download PDFInfo
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- CN116179176A CN116179176A CN202310207524.7A CN202310207524A CN116179176A CN 116179176 A CN116179176 A CN 116179176A CN 202310207524 A CN202310207524 A CN 202310207524A CN 116179176 A CN116179176 A CN 116179176A
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- viscosity
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- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000019253 formic acid Nutrition 0.000 claims abstract description 15
- 239000000852 hydrogen donor Substances 0.000 claims abstract description 15
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 13
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 12
- 239000003377 acid catalyst Substances 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 8
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 8
- 239000011734 sodium Substances 0.000 claims abstract description 8
- WPDAVTSOEQEGMS-UHFFFAOYSA-N 9,10-dihydroanthracene Chemical compound C1=CC=C2CC3=CC=CC=C3CC2=C1 WPDAVTSOEQEGMS-UHFFFAOYSA-N 0.000 claims abstract description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims abstract description 3
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 claims abstract description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 3
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 3
- 235000010289 potassium nitrite Nutrition 0.000 claims abstract description 3
- 239000004304 potassium nitrite Substances 0.000 claims abstract description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 3
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 2
- 150000003863 ammonium salts Chemical group 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 2
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- -1 sodium fatty alcohol Chemical class 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 33
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 7
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 5
- 239000001257 hydrogen Substances 0.000 abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 125000000373 fatty alcohol group Chemical group 0.000 abstract description 2
- 150000003384 small molecules Chemical class 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 31
- 239000000243 solution Substances 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000007789 sealing Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010408 sweeping Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000084 colloidal system Substances 0.000 description 5
- 150000002191 fatty alcohols Chemical class 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 238000010795 Steam Flooding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004227 thermal cracking Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a self-heating viscosity reducing system and application thereof, and belongs to the field of thick oil exploitation and viscosity reduction. The self-heating viscosity reduction system comprises: a heat generating agent A, a heat generating agent B, an acid catalyst, a hydrogen donor and an auxiliary agent; the heat generating agent A comprises sodium nitrite and/or potassium nitrite; the heat generating agent B comprises ammonium nitrate and/or ammonium sulfate; the acid catalyst comprises at least one of sulfurous acid, formic acid and sulfamic acid; the hydrogen donor comprises at least one of nano aluminum powder, sodium borohydride and 9, 10-dihydro anthracene; the auxiliary agent is fatty alcohol polyoxyethylene ether sodium sulfonate and/or sodium dodecyl sulfate. The self-heating viscosity-reducing system utilizes thermochemical reaction to generate a large amount of heat, improves the formation temperature, provides a favorable environment for the hydrothermal cracking reaction of the thick oil, generates a large amount of hydrogen after being added, can promote hydrodesulfurization reaction, increases the content of organic small molecules in the thick oil, effectively reduces the viscosity of the thick oil and improves the recovery ratio.
Description
Technical Field
The invention relates to a self-heating viscosity reducing system and application thereof, and belongs to the field of thick oil exploitation and viscosity reduction.
Background
The thick oil resources in China are very rich, which accounts for more than 20 percent of the total resources of petroleum, and is the fourth largest thick oil producing country in the world. Because heavy hydrocarbon and asphaltene content in the thick oil is higher, the thick oil has the characteristics of high viscosity, poor fluidity and the like, so the exploitation difficulty is high. The conventional technology for thick oil exploitation comprises the technologies of steam huff and puff, steam flooding, in-situ combustion and the like. Although the recovery ratio of the steam flooding technology can reach more than 40%, the steam flooding technology is mainly applicable to oil reservoirs with crude oil viscosity less than 10000 mPa.s under stratum conditions; the steam huff and puff technology is applicable to a wide oil reservoir type, but the recovery ratio is generally lower than 40%; the in-situ combustion technology has low requirements on the viscosity of crude oil and high thermal efficiency, and can be suitable for oil reservoirs with thinner oil layer thickness, but has large control difficulty and small application scale.
The self-heating viscosity reduction system generates thermo-chemical reaction under the catalysis of the acid catalyst to generate a large amount of gas, and simultaneously releases a large amount of heat, so that the temperature of a stratum can be effectively increased for the hydrothermal cracking reaction of the thick oil in a near-wellbore zone, the on-site modification of the thick oil is promoted, the organic matters such as paraffin, colloid and the like are dissolved, and a blocked oil way is dredged; the content of colloid and asphaltene in the thick oil is reduced, and the content of low-molecular hydrocarbon is obviously increased. The heavy oil thermal cracking reaction is largely dependent on its specific molecular composition, the organosulfides present in the asphaltenes are key materials for reaction with high temperature water, and the C-S bond cleavage is a key step in the thermal cracking reaction. The addition of hydrogen donor can produce heat and hydrogen, and the existence of hydrogen is favorable to breaking C-S bond, promotes hydrodesulfurization reaction, reduces the collision chance of free radical produced during the course of thick oil-water thermal cracking reaction, inhibits polymerization and gel formation, increases the content of saturated hydrocarbon and aromatic hydrocarbon, reduces the content of colloid and asphaltene, and achieves the purposes of reducing viscosity and improving fluidity. The influence of the self-heating viscosity reduction system on the heavy oil aquathermolysis reaction and a comparison experiment are adopted, so that the temperature of the reaction kettle can be greatly increased by adding the exothermic self-heating viscosity reduction system, the constant temperature is maintained, the effective temperature of the heavy oil aquathermolysis reaction is reached, a good effect is generated on the heavy oil aquathermolysis reaction, and a good viscosity reduction effect is achieved.
Disclosure of Invention
The invention provides a self-heating viscosity reducing system which comprises a heat generating agent A, a heat generating agent B, an acid catalyst, a hydrogen donor and an auxiliary agent.
In a specific embodiment, the heat generating agent a is a nitrite selected from sodium nitrite and/or potassium nitrite;
the heat generating agent B is ammonium salt selected from ammonium nitrate and/or ammonium sulfate;
the acid catalyst comprises at least one of sulfurous acid, formic acid and sulfamic acid;
the hydrogen donor comprises at least one of nano aluminum powder, sodium borohydride and 9, 10-dihydro anthracene.
The auxiliary agent is fatty alcohol polyoxyethylene ether sodium sulfonate and/or sodium dodecyl sulfate.
The invention provides an application of a self-heating viscosity reducing system in reducing the viscosity of thick oil in thick oil development.
In the present invention, the molar ratio of the heat generating agent A to the solution prepared by the heat generating agent B was 1:1.
In the present invention, the materials used are all known materials, and are commercially available or synthesized by known methods.
In the present invention, the devices or apparatuses used are conventional devices or apparatuses known in the art, and are commercially available.
The beneficial effects of the invention are as follows:
the acid catalyst formic acid in the self-heating viscosity-reducing system can serve as a catalyst in the reaction of the heating agents A and B, so that the reaction is accelerated, and the acid catalyst formic acid also has the function of a hydrogen donor;
the self-heating viscosity-reducing system generates a great amount of heat and gas by thermal reaction in the stratum, can effectively raise the temperature of the stratum for the hydrothermal cracking reaction of the thick oil in the near-wellbore zone, promote the on-site modification of the thick oil, dissolve organic matters such as paraffin, colloid and the like, dredge a blocked oil way and almost cause no pollution to the stratum due to the generated residues;
and secondly, the hydrogen donor in the self-heating viscosity-reducing system is added, a large amount of hydrogen can be discharged in the stratum by reaction, the existence of the hydrogen is favorable for promoting the breakage of C-S bonds of the thickened oil in the hydrothermal cracking reaction, accelerating the hydrodesulfurization reaction, reducing the collision chance of free radicals generated in the process of the hydrothermal cracking reaction, inhibiting polymerization and coke generation, increasing the contents of saturated hydrocarbon and aromatic hydrocarbon, reducing the contents of colloid and asphaltene, and achieving the purposes of reducing the viscosity of the thickened oil, improving the fluidity of the thickened oil and increasing the recovery ratio of the thickened oil.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
Adding 20g of thick oil into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 56.48%.
Example two
Adding 20g of thick oil and a certain volume of sodium nitrite solution with the molar concentration of 4mol/L into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
adding an ammonium nitrate solution with the same molar concentration as the sodium nitrite solution and a formic acid solution with the molar concentration of 2.5mol/L into a beaker, and uniformly mixing; then quickly adding a mixed solution of ammonium nitrate and formic acid, a certain volume of hydrogen donor nano aluminum powder with the mass concentration of 3% and a certain volume of auxiliary agent fatty alcohol polyoxyethylene ether sodium sulfonate with the mass concentration of 0.2% into a high-temperature high-pressure reaction kettle; after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 84.74%.
Example III
Adding 20g of thick oil, 3g of stratum water and a certain volume of sodium nitrite solution with the molar concentration of 6mol/L into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
adding an ammonium nitrate solution with the same molar concentration as the sodium nitrite solution and a formic acid solution with the molar concentration of 2.5mol/L into a beaker, and uniformly mixing; then quickly adding a mixed solution of ammonium nitrate and formic acid, a certain volume of hydrogen donor nano aluminum powder with the mass concentration of 3% and a certain volume of auxiliary agent fatty alcohol polyoxyethylene ether sodium sulfonate with the mass concentration of 0.2% into a high-temperature high-pressure reaction kettle; after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 93.23%.
Example IV
Adding 20g of thick oil, 3g of stratum water and a certain volume of sodium nitrite solution with the molar concentration of 8mol/L into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
adding an ammonium nitrate solution with the same molar concentration as the sodium nitrite solution and a formic acid solution with the molar concentration of 2.5mol/L into a beaker, and uniformly mixing; then quickly adding a mixed solution of ammonium nitrate and formic acid, a certain volume of hydrogen donor nano aluminum powder with the mass concentration of 3% and a certain volume of auxiliary agent fatty alcohol polyoxyethylene ether sodium sulfonate with the mass concentration of 0.2% into a high-temperature high-pressure reaction kettle; after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 89.12%.
Example five
Adding 20g of thick oil, 3g of stratum water and a certain volume of sodium nitrite solution with the molar concentration of 4mol/L into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
adding an ammonium nitrate solution with the same molar concentration as the sodium nitrite solution and a formic acid solution with the molar concentration of 2.5mol/L into a beaker, and uniformly mixing; then quickly adding a mixed solution of ammonium nitrate and formic acid, a certain volume of hydrogen donor nano aluminum powder with the mass concentration of 5% and a certain volume of auxiliary agent fatty alcohol polyoxyethylene ether sodium sulfonate with the mass concentration of 0.2% into a high-temperature high-pressure reaction kettle; after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 94.88%.
Example six
Adding 20g of thick oil, 3g of stratum water and a certain volume of sodium nitrite solution with the molar concentration of 4mol/L into a high-pressure reaction kettle; after sealing, nitrogen is used for sweeping, and pressure test of 2MPa is applied to ensure the sealing of the system;
adding an ammonium nitrate solution with the same molar concentration as the sodium nitrite solution and a formic acid solution with the molar concentration of 2.5mol/L into a beaker, and uniformly mixing; then quickly adding a mixed solution of ammonium nitrate and formic acid, a certain volume of hydrogen donor nano aluminum powder with the mass concentration of 7% and a certain volume of auxiliary agent fatty alcohol polyoxyethylene ether sodium sulfonate with the mass concentration of 0.2% into a high-temperature high-pressure reaction kettle; after heating to 240℃and reacting for 24 hours, the viscosity was measured by a Haake rotational viscometer according to the method specified in standard SY/T6316-1997 and the viscosity reduction was calculated to be 91.57%.
The viscosity comparison result after the oil sample added with the self-heating viscosity reduction system and the oil sample without the self-heating viscosity reduction system is shown in the following table:
list one
The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A self-heating viscosity-reducing system and application thereof comprise a heat generating agent A, a heat generating agent B, an acid catalyst, a hydrogen donor and an auxiliary agent.
2. The self-heating viscosity reducing system of claim 1, wherein the heat generating agent a is a nitrite comprising at least one of sodium nitrite and potassium nitrite.
3. The self-heating viscosity reducing system according to claims 1 to 2, wherein the heat generating agent B is an ammonium salt comprising at least one of ammonium nitrate, ammonium sulfate.
4. A self-generating thermal viscosity reducing system according to claims 1 to 3, wherein said acidic catalyst comprises at least one of sulfurous acid, formic acid, sulfamic acid.
5. The self-generating thermal viscosity reducing system of claims 1 to 4, wherein said hydrogen donor comprises at least one of nano aluminum powder, sodium borohydride, 9, 10-dihydro anthracene.
6. The self-heating viscosity reducing system according to claims 1 to 5, wherein the auxiliary agent is sodium fatty alcohol polyoxyethylene ether sulfonate and/or sodium dodecyl sulfate.
7. The self-heating viscosity reducing system according to any one of claims 1 to 6, wherein the heat generating agent a and the heat generating agent B are the same in concentration of an aqueous solution, and are each 4mol/L to 10mol/L.
8. The authigenic thermal viscosity reducing system according to any one of claims 1 to 7, wherein the acidic catalyst concentration is from 2moL/L to 4moL/L.
9. The self-heating viscosity reducing system according to any one of claims 1 to 8, wherein the content of the hydrogen donor is 3% to 7% and the content of the auxiliary agent is 0.2% to 0.5% based on 100% by mass of the total mass of the self-heating viscosity reducing system.
10. Use of the autogenous thermal viscosity-reducing system of any one of claims 1 to 9 for reducing the viscosity of thick oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310207524.7A CN116179176A (en) | 2023-03-07 | 2023-03-07 | Autogenous heat viscosity-reducing system and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310207524.7A CN116179176A (en) | 2023-03-07 | 2023-03-07 | Autogenous heat viscosity-reducing system and application thereof |
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| CN116179176A true CN116179176A (en) | 2023-05-30 |
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| CN202310207524.7A Pending CN116179176A (en) | 2023-03-07 | 2023-03-07 | Autogenous heat viscosity-reducing system and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017556A (en) * | 2014-06-26 | 2014-09-03 | 中国石油大学(华东) | Self-heating foam system, and preparation method and application thereof |
| CN112852399A (en) * | 2021-01-27 | 2021-05-28 | 重庆科技学院 | Fluid for thickened oil deep self-heating huff and puff oil recovery and preparation and use method thereof |
| CN113355076A (en) * | 2021-05-14 | 2021-09-07 | 长江大学 | Heating material for thickened oil and application thereof |
-
2023
- 2023-03-07 CN CN202310207524.7A patent/CN116179176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017556A (en) * | 2014-06-26 | 2014-09-03 | 中国石油大学(华东) | Self-heating foam system, and preparation method and application thereof |
| CN112852399A (en) * | 2021-01-27 | 2021-05-28 | 重庆科技学院 | Fluid for thickened oil deep self-heating huff and puff oil recovery and preparation and use method thereof |
| CN113355076A (en) * | 2021-05-14 | 2021-09-07 | 长江大学 | Heating material for thickened oil and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张典: "自生热解堵剂的研究和铝水反应作为供氢体的探讨", 吉林大学硕士学位论文集, 15 September 2009 (2009-09-15), pages 3 * |
| 朱家杰等: "自生热降黏剂的优化及原油降黏解堵性能", 大庆石油地质与开发, vol. 41, no. 2, 9 November 2021 (2021-11-09), pages 103 - 109 * |
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