CN115305072A - Low-temperature viscosity reducer and preparation method thereof - Google Patents
Low-temperature viscosity reducer and preparation method thereof Download PDFInfo
- Publication number
- CN115305072A CN115305072A CN202210999756.6A CN202210999756A CN115305072A CN 115305072 A CN115305072 A CN 115305072A CN 202210999756 A CN202210999756 A CN 202210999756A CN 115305072 A CN115305072 A CN 115305072A
- Authority
- CN
- China
- Prior art keywords
- low
- temperature viscosity
- viscosity reducer
- stirring
- polyoxyethylene ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 31
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 31
- 102000004882 Lipase Human genes 0.000 claims abstract description 20
- 108090001060 Lipase Proteins 0.000 claims abstract description 20
- 239000004367 Lipase Substances 0.000 claims abstract description 20
- 235000019421 lipase Nutrition 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 16
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- HEBRGEBJCIKEKX-UHFFFAOYSA-M sodium;2-hexadecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HEBRGEBJCIKEKX-UHFFFAOYSA-M 0.000 claims abstract description 8
- 230000002528 anti-freeze Effects 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 46
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 25
- 229920000193 polymethacrylate Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- JEWYDJOCWCTZKU-UHFFFAOYSA-N hexadecylbenzene;sodium Chemical compound [Na].CCCCCCCCCCCCCCCCC1=CC=CC=C1 JEWYDJOCWCTZKU-UHFFFAOYSA-N 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- AXURXPXGTBQYGB-UHFFFAOYSA-N C1(=CC=CC=C1)S(=O)(=O)O.C(CCCCCCCCCCCCCCC)[Na] Chemical compound C1(=CC=CC=C1)S(=O)(=O)O.C(CCCCCCCCCCCCCCC)[Na] AXURXPXGTBQYGB-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000084 colloidal system Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 22
- 239000010779 crude oil Substances 0.000 description 9
- 230000009467 reduction Effects 0.000 description 7
- 230000001603 reducing effect Effects 0.000 description 6
- 238000007614 solvation Methods 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000002736 nonionic surfactant Substances 0.000 description 5
- 239000003945 anionic surfactant Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 208000005156 Dehydration Diseases 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000693 micelle Substances 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012803 optimization experiment Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000080 wetting agent 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
- C09K8/58—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
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
- C09K8/604—Polymeric surfactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a low-temperature viscosity reducer, which comprises the following raw materials by weight: 500-600 g/L of nonylphenol polyoxyethylene ether, 200-300 g/L of hexadecyl sodium benzene sulfonate, 100-200 g/L of lipase, 50-80 g/L of alkylphenol polyoxyethylene ether, 50-80 g/L of dispersant, 30-50 g/L of antifreeze and the balance of water. The invention also discloses a preparation method of the low-temperature viscosity reducer, which comprises the following steps: weighing the raw materials; (2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether; (3) adding a dispersing agent and stirring; (4) adding lipase and stirring; and (5) adding an antifreezing agent and stirring to obtain the product. The low-temperature viscosity reducer can convert the thick oil asphaltene into colloid under the low-temperature condition, reduces the asphaltene content, reduces the viscosity of the thick oil, improves the flowing capability of the thick oil, and is beneficial to the exploitation and the transportation of the thick oil.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a low-temperature viscosity reducer and a preparation method thereof.
Background
The heavy oil has low light component content, high asphaltene and colloid content and low straight-chain hydrocarbon content, so that most of the heavy oil has the characteristics of high viscosity and high density, and the heavy oil is difficult to recover and transport.
The viscosity reducer is a high molecular surfactant, and by reducing the interfacial tension of oil and water, the thick oil in the stratum is changed from a water-in-oil emulsified state to an emulsified state taking water as an external phase, so that the viscosity of the thick oil is greatly reduced, and the recovery ratio is obviously improved. The viscosity reducer mainly plays a role in reducing the viscosity of an oil layer of an oil well, has the characteristics of high viscosity reduction efficiency, low use concentration, low use cost, no influence on the dehydration treatment of crude oil, simple chemical adding process, convenient operation and the like, and is widely applied to viscosity reduction exploitation and transportation of high-viscosity crude oil.
As the surfactant capable of forming the adsorption-solvation layer, the surfactant has an amphiphilicity in which polar groups on the molecule interact with water and nonpolar groups interact with an oil phase, which results in respective oil-solvation and hydration layers at the interface in two directions. The ratio of the thicknesses of the two layers determines the type of emulsifier, i.e. the value of the hydrophilic-lipophilic balance (H, L, B) determines the type of emulsion. In general, an O/W type emulsion can be formed with an HLB value of 8 to 18. Accordingly, the hydrophilicity (i.e., the lipophilic groups) required for viscosity reduction of crude oil is dominant.
Therefore, how to develop a viscosity reducer with strong adaptability and no phase inversion is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention aims to provide a low temperature viscosity reducer and a preparation method thereof, so as to solve the defects in the prior art. The low-temperature viscosity reducer belongs to various compounds, adopts a biological engineering technology, has strong adaptability and no reverse phase, does not influence the dehydration of crude oil, is beneficial to the dehydration of the crude oil, and does not cause wax hanging of the crude oil after long-term use.
In order to achieve the purpose, the invention adopts the following technical scheme:
the low-temperature viscosity reducer comprises the following raw materials in parts by weight: 500-600 g/L of nonylphenol polyoxyethylene ether, 200-300 g/L of hexadecyl sodium benzene sulfonate, 100-200 g/L of lipase, 50-80 g/L of alkylphenol polyoxyethylene ether, 50-80 g/L of dispersant, 30-50 g/L of antifreeze and the balance of water.
Preferably: 550g/L of nonylphenol polyoxyethylene ether, 250g/L of hexadecyl sodium benzene sulfonate, 150g/L of lipase, 65g/L of alkylphenol polyoxyethylene ether, 65g/L of dispersant, 40g/L of antifreeze and the balance of water.
The method for developing the low-temperature viscosity reducer mainly comprises three steps:
1) Measuring characteristic parameters (HLB value) of the oil sample;
2) The preparation method comprises the following steps of (1) preparation of a basic formula of the viscosity reducer (design and synthesis of a molecular structure of a main agent, determination of the type of an auxiliary agent and optimization experiment of the proportion of the main agent and the auxiliary agent);
3) And (4) determining an optimized formula of the viscosity reducer.
Through experiments, the following results are found: the critical micelle concentration-compounding ratio curve of the nonionic/anionic surfactant compounding system has the lowest point, namely the critical micelle concentration of the compounding system is lower than that of a single component, and the anionic surfactant can improve the cloud point of the nonionic surfactant. The invention takes nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether as raw materials to prepare a nonionic/anionic surfactant compound system; then adding polymethacrylate as a dispersing agent, and ensuring that the lipophilic group or the hydrophilic group in the viscosity reducer can be combined with a viscous component by utilizing the double electric layer principle and the steric effect of the dispersing agent; and adding lipase, wherein the catalytic property of the lipase is as follows: the catalyst has affinity of an oil-water interface, has the maximum catalytic activity on the oil-water interface, and can catalyze and hydrolyze water-insoluble lipid substances at a high rate on the oil-water interface; finally, the glycol is added to achieve the anti-freezing purpose, and finally the low-temperature viscosity reducer is prepared.
The chemical viscosity reduction principle of the low-temperature viscosity reducer is as follows:
1. the crude oil is dispersed in an aqueous solution containing a surfactant (a continuous phase), and an electric double layer is formed on the surface of oil droplets of the crude oil, so that the dispersed oil droplets establish electrostatic repulsion.
2. A solvation layer having a specific structure and specific properties and an adsorbed solvation layer are established on the surface of the oil droplets, and the adsorbed solvation layer prevents the dispersed phase particles from approaching and adhering.
3. The adsorbent layer around the dispersed phase particles has a thickness and strength such that hydrophilicity (polar groups) predominates and inversion is avoided.
4. The surfactant molecules adsorbed on the oil-water interface can reduce the interfacial tension between two phases, improve a thermodynamically unstable system and play an auxiliary role in the stability of the O/W emulsion.
In the invention, nonylphenol polyoxyethylene ether is a nonionic surfactant with a chemical formula of C 15 H 24 O(C 2 H 4 O) n It is mainly used as emulsifier, detergent, wetting agent, dispersant, defoaming agent, etc.
Alkylphenol ethoxylates (APEO) is an important polyoxyethylene type nonionic surfactant, has the advantages of stable property, acid and alkali resistance, low cost and the like, is mainly used for producing high-performance detergents, is one of the most commonly used main raw materials in printing and dyeing auxiliaries, and is required to be added with APEO in the preparation of various printing and dyeing auxiliaries such as detergents, scouring agents, spinning oil agents, softeners, crude oil, metal cleaning agents and the like for a long time.
Sodium hexadecylbenzene sulfonate is an anionic surfactant with a molecular formula of C 18 H 29 SO 3 Na plays a role in inhibiting particle growth and preventing particles from being too large when preparing a mixture of fluorescent powder and the like.
In order to enhance the activity of hydrophilic groups and keep the corresponding activity, the invention adds the lipase which can change the crystallization state of wax and is resistant to high temperature. The lipase is used for hydrolyzing the high-carbon resin, so that the wax and the asphalt become a stable dispersion phase, the strength of an oil solvation layer is properly reduced, wax crystals are prevented from being separated out, and the occurrence of phase inversion is fundamentally avoided.
Further, the dispersant is polymethacrylate.
The further technical scheme has the beneficial effects that the dispersing agent is a surfactant which has two opposite properties in a molecule and can play a role in dispersing and diluting in a system. The invention adds polymethacrylate as dispersant into viscous system, while its lipophilic group or hydrophilic group can combine with viscous component to form inclusion compound, to reduce the amount of viscous component in system, to reduce the viscosity of system.
Further, the antifreeze is ethylene glycol.
The beneficial effect of adopting the further technical scheme is that the glycol is added into a viscous system as an antifreezing agent, so that the aim of preventing freezing can be achieved.
A preparation method of a low-temperature viscosity reducer specifically comprises the following steps:
(1) Weighing the raw materials according to the weight of the low-temperature viscosity reducer;
(2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether until the materials are uniformly mixed to obtain a material A;
(3) Adding a dispersing agent into the material A and stirring until the dispersing agent and the material A are uniformly mixed to obtain a material B;
(4) Adding lipase into the material B and stirring until the lipase is uniformly mixed to obtain a material C;
(5) And adding an antifreezing agent into the material C, and stirring until the materials are uniformly mixed to obtain the low-temperature viscosity reducer.
Further, in the step (2), the stirring speed is 125r/min, and the stirring time is 120min.
Further, in the step (3), the rotation speed of stirring is 125r/min, and the time is 30min.
Further, in the step (4), the rotation speed of stirring is 125r/min, and the time is 90min.
Further, in the step (5), the rotation speed of stirring is 125r/min, and the time is 30min.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the low-temperature viscosity reducer has a good viscosity reducing effect on thick oil at low temperature, and the viscosity reducing rate reaches over 99.5 percent.
2. The low-temperature viscosity reducer can convert the thick oil asphaltene into colloid under the low-temperature condition, reduces the asphaltene content, reduces the viscosity of the thick oil, improves the flowing capability of the thick oil, and is beneficial to the exploitation and the transportation of the thick oil.
3. The low-temperature viscosity reducer can change heavy components into light components, thereby improving the quality of oil products.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The low-temperature viscosity reducer comprises the following raw materials in parts by weight: 550g/L nonylphenol polyoxyethylene ether, 250g/L hexadecyl benzene sodium sulfonate, 150g/L lipase, 65g/L alkylphenol polyoxyethylene ether, 65g/L polymethacrylate and 40g/L glycol, and the balance of water;
the preparation method of the low-temperature viscosity reducer comprises the following steps:
(1) Weighing the raw materials according to the weight of the low-temperature viscosity reducer;
(2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether at the rotating speed of 125r/min for 120min until the materials are uniformly mixed to obtain a material A;
(3) Adding polymethacrylate into the material A, and stirring at a rotating speed of 125r/min for 30min until the materials are uniformly mixed to obtain a material B;
(4) Adding lipase into the material B and stirring for 90min at a rotating speed of 125r/min until the materials are uniformly mixed to obtain a material C;
(5) And adding ethylene glycol into the material C, and stirring for 30min at the rotating speed of 125r/min until the mixture is uniformly mixed to obtain the low-temperature viscosity reducer.
Example 2
The low-temperature viscosity reducer comprises the following raw materials in parts by weight: 500g/L of nonylphenol polyoxyethylene ether, 200g/L of hexadecyl sodium benzene sulfonate, 200g/L of lipase, 80g/L of alkylphenol polyoxyethylene ether, 80g/L of polymethacrylate and 50g/L of glycol, and the balance of water;
the preparation method of the low-temperature viscosity reducer specifically comprises the following steps:
(1) Weighing the raw materials according to the weight of the low-temperature viscosity reducer;
(2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether at the rotating speed of 125r/min for 120min until the materials are uniformly mixed to obtain a material A;
(3) Adding polymethacrylate into the material A, and stirring for 30min at a rotating speed of 125r/min until the materials are uniformly mixed to obtain a material B;
(4) Adding lipase into the material B, and stirring for 90min at a rotating speed of 125r/min until the materials are uniformly mixed to obtain a material C;
(5) And adding ethylene glycol into the material C, and stirring for 30min at a rotating speed of 125r/min until the materials are uniformly mixed to obtain the low-temperature viscosity reducer.
Example 3
The low-temperature viscosity reducer comprises the following raw materials in parts by weight: 600g/L of nonylphenol polyoxyethylene ether, 300g/L of hexadecyl sodium benzene sulfonate, 100g/L of lipase, 50g/L of alkylphenol polyoxyethylene ether, 50g/L of polymethacrylate and 30g/L of glycol, and the balance of water;
the preparation method of the low-temperature viscosity reducer comprises the following steps:
(1) Weighing the raw materials according to the weight of the low-temperature viscosity reducer;
(2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether at the rotating speed of 125r/min for 120min until the materials are uniformly mixed to obtain a material A;
(3) Adding polymethacrylate into the material A, and stirring at a rotating speed of 125r/min for 30min until the materials are uniformly mixed to obtain a material B;
(4) Adding lipase into the material B and stirring for 90min at a rotating speed of 125r/min until the materials are uniformly mixed to obtain a material C;
(5) And adding ethylene glycol into the material C, and stirring for 30min at the rotating speed of 125r/min until the mixture is uniformly mixed to obtain the low-temperature viscosity reducer.
Performance test
The low-temperature viscosity reducer prepared in each of examples 1 to 3 was quantitatively measured and the temperature was maintained at 15 ℃ to obtain a thick oil sampleMeasuring viscosity eta after 20min o (ii) a Measuring viscosity eta of thick oil emulsion at the same temperature e (ii) a Viscosity reduction rate R (%) = (η) o -η e )/η o x 100％。
The results are shown in Table 1.
TABLE 1 viscosity and viscosity reduction ratio of thick oil samples before and after use of the cryo-viscosity reducers of examples 1 to 3
| Low-temperature viscosity reducer | By volume concentration of | Temperature, C | η o ，mPa.s | η e ，mPa.s | Viscosity reduction rate of% |
| Example 1 | 0.1 | 15 | 26994 | 25 | 99.91 |
| Example 2 | 0.1 | 15 | 26994 | 80 | 99.70 |
| Example 3 | 0.1 | 15 | 26994 | 130 | 99.52 |
As can be seen from Table 1, the low-temperature viscosity reducer has a good viscosity reducing effect on thick oil at low temperature, and the viscosity reducing rate reaches over 99.5 percent.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The low-temperature viscosity reducer is characterized by comprising the following raw materials in parts by weight: 500-600 g/L of nonylphenol polyoxyethylene ether, 200-300 g/L of hexadecyl benzene sodium sulfonate, 100-200 g/L of lipase, 50-80 g/L of alkylphenol polyoxyethylene ether, 50-80 g/L of dispersant, 30-50 g/L of antifreeze and the balance of water.
2. The low-temperature viscosity reducer according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 550g/L nonylphenol polyoxyethylene ether, 250g/L hexadecyl benzene sodium sulfonate, 150g/L lipase, 65g/L alkylphenol polyoxyethylene ether, 65g/L dispersant, 40g/L antifreeze and the balance of water.
3. A low temperature viscosity reducing agent according to claim 1 or 2, wherein the dispersant is polymethacrylate.
4. The low-temperature viscosity reducer according to claim 1 or 2, wherein the antifreezing agent is ethylene glycol.
5. The preparation method of the low-temperature viscosity reducer is characterized by comprising the following steps:
(1) Weighing the raw materials according to the weight of the low-temperature viscosity reducer of any one of claims 1 to 4;
(2) Stirring nonylphenol polyoxyethylene ether, sodium hexadecylbenzene sulfonate and alkylphenol polyoxyethylene ether until the materials are uniformly mixed to obtain a material A;
(3) Adding a dispersing agent into the material A and stirring until the dispersing agent and the material A are uniformly mixed to obtain a material B;
(4) Adding lipase into the material B and stirring until the lipase is uniformly mixed to obtain a material C;
(5) And adding an antifreezing agent into the material C, and stirring until the materials are uniformly mixed to obtain the low-temperature viscosity reducer.
6. The method for preparing a low-temperature viscosity reducer according to claim 5, wherein in the step (2), the rotation speed of the stirring is 125r/min, and the time is 120min.
7. The method for preparing a low-temperature viscosity reducer according to claim 5, wherein in the step (3), the rotation speed of the stirring is 125r/min, and the time is 30min.
8. The method for preparing a low-temperature viscosity reducer according to claim 5, wherein in the step (4), the rotation speed of the stirring is 125r/min, and the time is 90min.
9. The method for preparing a low-temperature viscosity reducer according to claim 5, wherein in the step (5), the rotation speed of the stirring is 125r/min, and the time is 30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999756.6A CN115305072A (en) | 2022-08-19 | 2022-08-19 | Low-temperature viscosity reducer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999756.6A CN115305072A (en) | 2022-08-19 | 2022-08-19 | Low-temperature viscosity reducer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115305072A true CN115305072A (en) | 2022-11-08 |
Family
ID=83862429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210999756.6A Pending CN115305072A (en) | 2022-08-19 | 2022-08-19 | Low-temperature viscosity reducer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115305072A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852361A (en) * | 2019-03-20 | 2019-06-07 | 天津瑞达同方生物科技开发有限公司 | A kind of temperature-resistant anti-salt composite viscosity reducer and the preparation method and application thereof |
| CN111205843A (en) * | 2019-06-18 | 2020-05-29 | 中国石油大学(北京) | Thick oil viscosity reducer, preparation method and use method thereof |
| CN112159649A (en) * | 2020-08-07 | 2021-01-01 | 长江大学 | Biochemical viscosity reducer for thickened oil and preparation method thereof |
| CN113528109A (en) * | 2021-06-02 | 2021-10-22 | 中国石油大学(北京) | Viscosity reducer, preparation method and application thereof |
-
2022
- 2022-08-19 CN CN202210999756.6A patent/CN115305072A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852361A (en) * | 2019-03-20 | 2019-06-07 | 天津瑞达同方生物科技开发有限公司 | A kind of temperature-resistant anti-salt composite viscosity reducer and the preparation method and application thereof |
| CN111205843A (en) * | 2019-06-18 | 2020-05-29 | 中国石油大学(北京) | Thick oil viscosity reducer, preparation method and use method thereof |
| CN112159649A (en) * | 2020-08-07 | 2021-01-01 | 长江大学 | Biochemical viscosity reducer for thickened oil and preparation method thereof |
| CN113528109A (en) * | 2021-06-02 | 2021-10-22 | 中国石油大学(北京) | Viscosity reducer, preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2909329C (en) | High-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil and preparation process thereof | |
| CN108114617B (en) | Small-particle-size ultralow-concentration nano emulsion composition and preparation method thereof | |
| CN111394080B (en) | Thick oil viscosity reducer and using method thereof | |
| CA3130824C (en) | Permeability-enhancing flooding system for tight oil reservoirs, and preparation and use thereof | |
| US4570656A (en) | Method of transporting viscous hydrocarbons | |
| CN111154475B (en) | Oil displacement agent for reducing interfacial tension of high-wax-content crude oil and preparation method and application thereof | |
| CN110396401A (en) | The method and application and recovery method in heavy crude reservoir exploitation of emulsifying and viscosity-reducing agent for condensed oil and preparation method and thick-oil emulsified adhesive-reducing | |
| CN102826728A (en) | Cleaning agent for treating oily sludge by using hot washing method and preparation method of cleaning agent | |
| CN114716992B (en) | Salt-resistant temperature-resistant thick oil emulsifying viscosity reducer and preparation method thereof | |
| CN112708410B (en) | Composite surfactant containing aryl alcohol polyether anionic nonionic surfactant | |
| CN111440604B (en) | Self-demulsification type salt-resistant heavy oil cold recovery oil-displacing agent and preparation method and application thereof | |
| CN109794080A (en) | It is a kind of can magnetic recovery composite diatomite demulsifying material preparation method and application | |
| CN111607372A (en) | Biological nano preparation for thickened oil recovery and preparation method and application thereof | |
| CN112694877A (en) | Composite surfactant containing bisphenol A polyether diacid salt and preparation method and application thereof | |
| CN105112038A (en) | Thick oil emulsifying viscosity breaker for tracing steam, and preparation method and application method thereof | |
| CN115305072A (en) | Low-temperature viscosity reducer and preparation method thereof | |
| CN109320100A (en) | A kind of enhanced type glass fiber impregnating agent | |
| CN113072921B (en) | Viscosity reducer for ultra-thick oil in well bore | |
| CN117264429A (en) | Paraffin emulsion composition and preparation method thereof | |
| CN104946226A (en) | Thick oil sulfonate preparing method | |
| CN115595132A (en) | Emulsifying viscosity-reducing drag-reducing agent for produced liquid and preparation method thereof | |
| CN114591468A (en) | Oil-water interface activation drag reducer for cold production of thickened oil and preparation method thereof | |
| CN114479810B (en) | Surfactant composition, preparation method and application thereof | |
| CN102086408A (en) | Low-temperature demulsifier for crude oil emulsion and production method thereof | |
| CN106939173B (en) | A kind of method of sulfuric acid and ionic liquid composite catalyst catalytic production gasoline alkylate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221108 |