CN111286389A - Special high-pressure sealing grease composition for oil field logging - Google Patents
Special high-pressure sealing grease composition for oil field logging Download PDFInfo
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- CN111286389A CN111286389A CN202010018921.6A CN202010018921A CN111286389A CN 111286389 A CN111286389 A CN 111286389A CN 202010018921 A CN202010018921 A CN 202010018921A CN 111286389 A CN111286389 A CN 111286389A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/108—Residual fractions, e.g. bright stocks
- C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/049—Phosphite
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention relates to a special high-pressure sealing grease composition for oil field logging, which can meet the sealing and lubrication of a protective device during different pressure (low, medium and high) and different form oil well (oil production well, water injection well and observation well) tests. The composition of the invention adopts specific antioxidant antiwear agent, antirust agent, tackifier, and a certain amount of pour point depressant and anti-emulsifier besides specific base oil group, and fully exerts the synergistic effect among the additives. The sealing grease composition has good corrosion resistance, rust resistance, lubricating property and high-pressure sealing property, and particularly the anti-emulsifying property is improved to a certain extent, so that the requirements of the lubricating property and the sealing property of a protective device in the oil field logging process are met.
Description
Technical Field
The invention relates to a special high-pressure sealing grease composition for oil field logging, in particular to a high-pressure sealing grease composition for oil field logging protection devices used under different environmental conditions.
Technical Field
In order to know the dynamics of oil, gas and water in each layer of the water injection well or the production well in time, the injection amount of each layer and the oil, gas and water production amount of the production well are mastered in time. The important task of production logging is to know the properties and flow rates of produced or absorbed fluids in each perforated interval by measuring the fluid flow profiles of a production well and an injection well (the measurement parameters comprise the velocity (flow rate), density, water holding rate, temperature, pressure and the like of the fluids), so as to evaluate the oil well production state and oil layer production characteristics and provide a basis for oil and gas field reservoir evaluation, development scheme establishment and adjustment, detection of downhole technical conditions, operation measure implementation and effect evaluation.
Production logging, also known as development logging, refers to logging in which various testing instruments are used to perform downhole testing to obtain corresponding subsurface information during the whole production process from production to abandonment of an oil well (including an oil production well, a water injection well, an observation well, etc.). In cased hole logging, in order to prevent high-temperature and high-pressure fluids (oil, gas, steam and water) in production wells (injection wells and production wells) from being sprayed out of a wellhead, logging is performed under the normal pressure of the production wells, namely 'closed logging', and a safety device needs to be installed. The well logging blowout preventer comprises a blowout preventer (generally an oil pipe longer than 2 m), an oil pipe nipple, an overflow pipe, a blowout preventer body and the like. The high-pressure well logging is suitable for well logging of well with relatively high pressure at well head, and its blowout-preventing box is equipped with three flow tubes (steel tube capable of making cable pass through and its internal diameter is smooth), and the well logging cable can be passed through it, and its gap is 0.15-0.30 mm. In the logging process, a high-pressure oil injection pump is used for continuously injecting high-pressure sealing grease into the flow pipe, a logging cable is sealed and lubricated under high pressure, the abrasion of a packing is reduced through the lubrication of the cable and the packing, the resistance of gas leakage is increased, and therefore the sealing performance of the blowout prevention box is enhanced.
The high-pressure sealing grease used at home and abroad at present has uneven quality, often has poor sealing effect, large leakage and serious environmental pollution (large overflow amount of an upper port); or the viscosity is too high, and the pumping cannot be carried out at a low temperature. Particularly, when a water injection well is detected, the water quality (recovered water) used by the water injection well is poor, a large amount of active substances are contained, the emulsification loss of sealing grease is easily caused under high-pressure impact, and the sealing effect is reduced. In recent years, there have been many reports on the research of sealing grease, such as: the patent of application No. 201910291126.1 discloses a method for sealing vacuum grease for an electrolytic cell of a trace moisture analyzer, wherein the sealant for the electrolytic cell is formed by mixing the vacuum grease and vaseline according to the mass ratio of 5:1, so that the current situation that the conventional vacuum grease fails and becomes hard after being used for a period of time can be effectively avoided; the gas holder sealing oil composition disclosed by application number 201710953078.9 is prepared by selecting deep refined base oil, optimizing and matching graphene, a viscosity index improver, an antioxidant, a dispersant, a pour point depressant and a demulsifier, can obviously reduce acidic substances and oxidation products generated in the use process of the gas holder sealing oil, and is widely applicable to sealing and lubricating of dry gas holders in the industries of metallurgy, urban gas, chemical engineering, petroleum and petrochemical industry and the like; the invention discloses a high-performance shield tail sealing grease disclosed by application number 201811578429.3, which is prepared by adding and mixing base oil, lubricating grease, organic bentonite, polymer fibers and chlorinated paraffin in proportion, then adding polyisobutylene and a thickening agent, uniformly stirring, then adding powder and stirring. The product has strong water pressure resistance and sealing property, excellent lubricating property, good pumping performance, wide applicable temperature range and no pollution to the environment, and can play a good sealing role particularly in a water-rich sand layer or a stratum with large burial depth and high water content. The product is difficult to meet the sealing requirement of high-pressure logging in the oil field no matter under the use working condition or on the product cost.
Disclosure of Invention
The invention aims to provide a special high-pressure sealing grease composition for oil field logging, which has good adhesion performance, certain low-temperature fluidity and lubricating performance, better anti-emulsifying performance and lower leakage amount, and can meet the sealing requirements of oil field high-pressure logging protective devices used under different environments and medium conditions. The invention provides a special high-pressure sealing grease composition for oil field logging, which comprises the following components:
a: the antirust additive can be one or a mixture of antirust agents such as petroleum sodium sulfonate, synthetic sodium sulfonate, barium dinonylnaphthalene sulfonate, dodecenylsuccinic acid and the like;
b: the antiwear agent can be one or a mixture of antiwear agents such as sulfurized isobutylene, tricresyl phosphate, triphenyl thiophosphate, di-n-butyl phosphite and the like;
c: the ashless antioxidant additive can be one or mixture of antioxidant additives such as 2, 6-di-tert-butyl-p-cresol, 2, 6-di-tert-butyl phenol, benzotriazole derivatives, thiadiazole derivatives, etc.;
d: the tackifier may be one or mixture of high molecular weight polyisobutylene, ethylene-propylene copolymer, polymethacrylate, hydrogenated styrene-diene copolymer, etc.;
e: the base oil has a kinematic viscosity of not less than 30mm at 100 ℃2Mineral base oil, synthetic base oil, or mixtures thereof.
Other additives such as antifoaming agents, demulsifiers, and the like are also required in the sealing grease composition of the present invention to improve the anti-emulsification properties and anti-foaming properties of the base oil.
The antirust additive can be one or a mixture of antirust agents such as petroleum sodium sulfonate, synthetic sodium sulfonate, barium dinonylnaphthalene sulfonate, dodecenylsuccinic acid and the like. The component accounts for 0.1-2%, preferably 0.2-1.0% of the total mass of the sealing grease composition.
The antiwear agent is one or the mixture of extreme pressure antiwear agents such as sulfurized isobutylene, tricresyl phosphate, triphenyl thiophosphate, di-n-butyl phosphite and the like. The component accounts for 0.05-1%, preferably 0.1-0.5% of the total mass of the sealing grease composition.
The antioxidant additive is one or mixture of antioxidant additives such as 2, 6-di-tert-butyl-p-cresol, 2, 6-di-tert-butyl phenol, benzotriazole derivative, thiadiazole derivative, etc. The component accounts for 0.05-1%, preferably 0.1-0.5% of the total mass of the sealing grease composition.
The tackifier may be one or a mixture of high molecular weight polyisobutylene, ethylene-propylene copolymer, polymethacrylate, hydrogenated styrene-diene copolymer, and the like. The component accounts for 10-50%, preferably 20-45% of the total mass of the sealing grease composition.
The base oil can be selected from mineral oil and synthetic oil or their mixture, and has a kinematic viscosity of not less than 30mm at 100 deg.C2And s. The mineral base oil is straight-chain alkane, cyclane and other mixed mineral oil. The synthetic base oil comprises polymerized hydrocarbon oil, alkylbenzene and derivatives thereof, ester oil and the like.
Other additives may also be present in the sealing grease composition of the present invention as follows:
pour point depressants, otherwise known as cold flow improvers, can reduce the cold flow properties of the product. Typical additives are those having an alkyl group of C8To C18Dialkyl fumarate, vinyl acetate copolymer, polyalkylmethacrylate, poly-a-olefin, etc. of (A) and (B) are commercially available under the trade designation T803, etc.
The anti-foaming agent can be selected from polysiloxane, such as silicone oil or polydimethylsiloxane.
The demulsifier is alkylene oxide polymer or polyether compound, such as LZ5712, T1001, DL32, LZ5957, etc.
The sealing grease composition of the present invention can be prepared by the following method: adding the base oil into a blending kettle according to a certain proportion, stirring and heating to 75 +/-5 ℃, sequentially adding the antifoaming agent, the pour point depressant, the demulsifier, the tackifier and the like, heating to the constant temperature of 75 +/-5 ℃, and stirring and circulating for about 1-2 hours. Then adding antioxidant, antiwear agent, etc. and circularly stirring for 2-6 hr.
The invention selects the additives with synergistic effects of antioxidation, wear resistance, tackifying, rust prevention and the like to optimize and combine, generates obvious sealing, wear resistance and antioxidation effects, and can meet the sealing requirements of the high-pressure logging protective device of the oil field under different environments and medium conditions.
Detailed Description
The following examples are further illustrative of the present invention, but are not intended to be limiting thereof, the spirit and scope of the invention being set forth in the appended claims.
Example 1
Adding 55 parts of 150BS base oil into a blending reaction kettle in sequence, starting stirring, slowly heating to 75 +/-5 ℃, then adding 40.5 parts of ethylene-propylene copolymer tackifier (T615), 3 parts of high-molecular polyisobutylene tackifier, 50PPM of LZ5957 demulsifier and 0.4 part of T803B pour point depressant, maintaining stirring for 1 hour, then adding 0.5 part of T702 antirust agent, 0.5 part of T306 antiwear agent and 0.1 part of T501 antioxidant, maintaining the reaction temperature at 75 +/-5 ℃, and stirring for 4-6 hours, thereby ensuring that the product is uniformly dispersed.
The obtained high-pressure density special for oil field loggingSealing oil, kinematic viscosity at 40 ℃ of 5678mm2S, kinematic viscosity at 100 ℃ of 318mm2The pour point is-13 ℃, the copper sheet corrodes level 1a, and the corrosivity is qualified; the maximum non-seizing load is PB 78 kg, and the product has good lubricating and sealing performance, oxidation resistance, abrasion resistance and emulsification resistance, and is suitable for sealing in spring and autumn logging under the environment condition of (-5 ℃ -minus-30 ℃).
Example 2
Sequentially adding 52.9 parts of 150BS base oil into a blending reaction kettle, starting stirring, slowly heating to 75 +/-5 ℃, then adding 40 parts of polymethacrylate tackifier (T602) and 3 parts of T803B pour point depressant, maintaining stirring for 1 hour, then adding 0.5 part of T702 antirust agent, 0.5 part of T306 antiwear agent and 0.1 part of T501 antioxidant, maintaining the reaction temperature at 75 +/-5 ℃, and stirring for 4-6 hours, thereby ensuring that the product is uniformly dispersed.
The obtained high-pressure sealing grease special for oil field logging has the kinematic viscosity of 3237mm at 40 DEG C2The pour point is-20 ℃, the copper sheet corrodes level 1a, and the corrosivity is qualified; the maximum non-seizing load is PB 78 kg, and the product has good lubricating and sealing performance and oxidation and abrasion resistance, and is suitable for logging sealing in winter under the environment condition of (-15 ℃ -minus-20 ℃).
Example 3
Sequentially adding heavy base oil (kinematic viscosity at 40 ℃ is more than 1000 mm) into a blending reaction kettle268.5 portions of/s), starting stirring, slowly heating to 75 plus or minus 5 ℃, then adding 30 portions of polymethacrylate tackifier (T602) and 0.5 portion of T803B pour point depressant, maintaining stirring for 1 hour, then adding 0.5 portion of T705 antirust agent, 0.4 portion of T304 antiwear agent and 0.1 portion of T551 antioxidant, maintaining the reaction temperature at 75 plus or minus 5 ℃, and stirring for 4-6 hours, thereby ensuring that the product is uniformly dispersed.
The obtained high-pressure sealing grease special for oil field logging has a kinematic viscosity of 8380mm at 40 DEG C2S, kinematic viscosity at 100 ℃ of 348mm2The flow point is-5 ℃, the copper sheet corrodes 1a grade, and the corrosivity is qualified; the maximum non-seizing load is PB 80 kg, and the product has good lubricating and sealing performance and oxidation and abrasion resistance, and is suitable for logging sealing in summer (at 0-40 ℃) environment.
Example 4
In a blending reactionSequentially adding heavy base oil (kinematic viscosity at 40 ℃ is more than 1500 mm)269.5 portions/s), starting stirring, slowly heating to 75 +/-5 ℃, then adding 24 portions of polymethacrylate tackifier (T602), 5 portions of ethylene-propylene copolymer tackifier (T615), 50PPM of DL32 demulsifier and 0.5 portion of T803B pour point depressant, maintaining stirring for 1 hour, then adding 0.5 portion of T705 antirust agent, 0.4 portion of T309 antiwear agent and 0.1 portion of T551 antioxidant, maintaining the reaction temperature at 75 +/-5 ℃, and stirring for 4-6 hours, thereby ensuring the uniform dispersion of the product.
The obtained high-pressure sealing grease special for oil field logging has a kinematic viscosity of 8483mm at 40 DEG C2(s) kinematic viscosity at 100 ℃ of 328mm2The flow point is-4 ℃, the copper sheet corrodes level 1a, and the corrosivity is qualified; the product has good lubricating, sealing, anti-oxidation, anti-wear and anti-emulsification properties, and is suitable for logging sealing in summer (at 0-40 ℃ in environment).
Claims (6)
1. A high-pressure sealing grease composition special for oil field logging comprises the following components:
a: the antirust additive can be one or a mixture of antirust agents such as petroleum sodium sulfonate, synthetic sodium sulfonate, barium dinonylnaphthalene sulfonate, dodecenylsuccinic acid and the like;
b: the antiwear agent can be one of extreme pressure antiwear agents such as sulfurized isobutylene, tricresyl phosphate, triphenyl thiophosphate, di-n-butyl phosphite and the like or a mixture thereof;
c: the ashless antioxidant additive can be one or mixture of antioxidant additives such as 2, 6-di-tert-butyl-p-cresol, 2, 6-di-tert-butyl phenol, benzotriazole derivatives, thiadiazole derivatives, etc.;
d: the tackifier may be one or mixture of high molecular weight polyisobutylene, ethylene-propylene copolymer, polymethacrylate, hydrogenated styrene-diene copolymer, etc.;
e: the base oil has a kinematic viscosity of not less than 30mm at 100 ℃2Mineral base oil, synthetic base oil, or mixtures thereof.
2. The sealing grease composition according to claim 1, characterized in that the rust preventive additive accounts for 0.1% to 2% by mass of the total sealing grease composition.
3. The sealing grease composition according to claim 1, characterized in that the antiwear agent component accounts for 0.05% to 1% of the total mass of the sealing grease composition.
4. The sealing grease composition according to claim 1, characterized in that the antioxidant component is 0.05% to 1% of the sealing grease composition.
5. The sealing grease composition according to claim 1, wherein the tackifier is present in an amount of 10% to 50% by mass based on the total mass of the sealing grease composition.
6. The sealing grease composition according to claim 1, wherein the base oil is selected from the group consisting of mineral oils and synthetic oils or mixtures thereof, and has a kinematic viscosity at 100 ℃ of not less than 30mm2And/s, the mineral base oil is straight-chain alkane, cyclane and other mixed mineral oil, and the synthetic base oil comprises polymerized hydrocarbon oil, alkylbenzene and derivatives thereof, ester oil and the like.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647454A (en) * | 2020-06-18 | 2020-09-11 | 信达化工科技有限公司 | Tackifier for sealing grease, preparation method and application |
| CN112266812A (en) * | 2020-10-16 | 2021-01-26 | 山东沃特润滑科技有限公司 | Modifier special for gas holder sealing oil and preparation method thereof |
| CN112625780A (en) * | 2020-12-09 | 2021-04-09 | 中铁建华南建设(广州)高科技产业有限公司 | Low-temperature-resistant shield tail sealing grease and preparation method thereof |
| CN116042300A (en) * | 2023-02-18 | 2023-05-02 | 珠海桦泽工业有限公司 | Low-resistance Wen Dunwei sealing grease and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111647454A (en) * | 2020-06-18 | 2020-09-11 | 信达化工科技有限公司 | Tackifier for sealing grease, preparation method and application |
| CN112266812A (en) * | 2020-10-16 | 2021-01-26 | 山东沃特润滑科技有限公司 | Modifier special for gas holder sealing oil and preparation method thereof |
| CN112625780A (en) * | 2020-12-09 | 2021-04-09 | 中铁建华南建设(广州)高科技产业有限公司 | Low-temperature-resistant shield tail sealing grease and preparation method thereof |
| CN112625780B (en) * | 2020-12-09 | 2021-08-31 | 中铁建华南建设(广州)高科技产业有限公司 | Low-temperature-resistant shield tail sealing grease and preparation method thereof |
| CN116042300A (en) * | 2023-02-18 | 2023-05-02 | 珠海桦泽工业有限公司 | Low-resistance Wen Dunwei sealing grease and preparation method thereof |
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