CN108949123A - Lubricant for drilling fluid and its preparation method and application - Google Patents
Lubricant for drilling fluid and its preparation method and application Download PDFInfo
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- CN108949123A CN108949123A CN201810729649.5A CN201810729649A CN108949123A CN 108949123 A CN108949123 A CN 108949123A CN 201810729649 A CN201810729649 A CN 201810729649A CN 108949123 A CN108949123 A CN 108949123A
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- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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Abstract
The present invention relates to field of oilfield chemistry, and in particular to a kind of lubricant for drilling fluid and its preparation method and application.Lubricant for drilling fluid includes: rapeseed oil, polyethers, esters base oil, Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60, thiophosphoric acid imidazole salts extreme pressure anti-wear additives and defoaming agent.Described includes: that rapeseed oil, polyethers and the mixing of esters base oil are heated with stirring to 50-60 DEG C；Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60 and thiophosphoric acid imidazole salts extreme pressure anti-wear additives, stirring is added；Defoaming agent is added, stirring obtains lubricant for drilling fluid.Lubricant for drilling fluid provided by the present invention has excellent abrasion resistance and biological degradability, when being applied to drilling fluid, has not significant impact to the other performance of drilling fluid, such as viscosity, fluid loss.
Description
Technical field
The present invention relates to field of oilfield chemistry, and in particular to a kind of lubricant for drilling fluid and its preparation method and application.
Background technique
Lubricant for drilling fluid can improve drilling fluid lubricating and reduce the coefficient of viscosity of mud cake.Currently, China's drilling fluid moistens
Lubrication prescription is mostly mineral oil origin lubricant.Mineral oil origin lubricant is mainly C20-C70 hydrocarbon compound, such compound biology drop
Solution property is poor, in use, can be trapped in for a long time in water and soil, pollute environment.When containing the mine of low concentration in water
When object oil, it is dead to will cause marine organisms object group；When mineral oil penetrates into soil, the microorganism in soil will poison cause
Extremely, the application of serious pollution of ecological environment, mineral type lubricating oil is restricted.
For this purpose, it is environmentally friendly to provide one kind, and the lubricant for drilling fluid for having good greasy property is of crucial importance.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One is designed to provide a kind of lubricant for drilling fluid, has excellent abrasion resistance and biological degradability, to its of drilling fluid
Its performance, such as viscosity, fluid loss have not significant impact, and are a kind of environmental-friendly type drilling liquid lubricants.
According to the first aspect of the invention, the present invention provides a kind of lubricant for drilling fluid, comprising: rapeseed oil, polyethers, ester
Class base oil, Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60, thiophosphoric acid imidazole salts extreme pressure anti-wear additives
And defoaming agent.
Contain rapeseed oil in lubricant for drilling fluid provided by the invention, rapeseed oil as a kind of crude vegetal, have compared with
Good antioxidative stabilizer and low temperature flow, have excellent greasy property and good demulsification resistance, antiseptic property and
High temperature resistance etc., and the advantages that source is wide, resource is renewable and price is relatively low, it is a kind of most widely used plant
Oil and the emphasis of Green Lubricants research, using rapeseed oil as the base oil of degradable lubricant for drilling fluid, to reduce mine
The use of object type lubricating oil has great importance for protection environment, it may have broad application prospect.Thiophosphoric acid imidazoles
Salt, which cooperates rapeseed oil as a kind of extreme pressure anti-wear additives, can be improved the abrasion resistance of lubricant.Polyethers is that current sales volume is maximum
A kind of synthetic oil, it is to refer to using alcohol or amine as initiator, by ethylene oxide, propylene oxide, epoxy butane and tetrahydrofuran
Deng for raw material, open loop homopolymerization or it is copolymerized linear polymer obtained under the action of catalyst.Polyethers has excellent greasy property,
Friction and wear can effectively be reduced；The toxicity of polyethers is very low, will not cause physiological barrier swallowing on a small quantity；Polyethers
Biological degradability is good, and the ethylene oxide polyethers biological degradability containing 80% is up to 80%.In addition, the biological oxygen consumption of polyethers is low,
The oxygen in water is not consumed, cannot form harmful oil film, so the biology in water will not be injured, pollution problem is not present.It is poly-
Ether is widely used in drilling fluid, is a kind of environmental-friendly lubricant.Lubricant for drilling fluid is with rapeseed oil, polyethers and ester
It is oily based on the good compound of the biological degradabilities such as class, anionic surfactant, nonionic surface active agent, extreme pressure is added
Antiwear additive and defoaming agent reconcile, and have excellent abrasion resistance and biological degradability, to the other performance of drilling fluid, such as
Viscosity, fluid loss etc. have not significant impact.
According to an embodiment of the invention, the above lubricant for drilling fluid can further be appended below technical characteristic:
According to some embodiments of the present invention, in parts by weight, the rapeseed oil be 20~30 parts, the polyethers be 20~
30 parts, the esters base oil be 20~30 parts, the Span-80 sorbitol anhydride oleate is 5~20 parts, the EL-40
Emulsifier EL-60 is 5~20 parts, the thiophosphoric acid imidazole salts extreme pressure anti-wear additives are 2~10 parts, and the defoaming agent is
0.5~1 part.Thus obtained lubricant for drilling fluid has good greasy property.
According to some embodiments of the present invention, in parts by weight, the rapeseed oil be 20~25 parts, the polyethers be 25~
30 parts, the esters base oil be 25~30 parts, the Span-80 sorbitol anhydride oleate is 8~15 parts, the EL-40
Emulsifier EL-60 is 5~15 parts, the thiophosphoric acid imidazole salts extreme pressure anti-wear additives are 2~5 parts, and the defoaming agent is 0.5
~1 part.Thus obtained lubricant for drilling fluid has good greasy property.
It according to some embodiments of the present invention, by weight percentage, include 20~30% in the lubricant for drilling fluid
Rapeseed oil, 20~30% polyethers, 20~30% esters base oil, 5~20% Span-80 sorbitan oleic acid
Ester, 5~20% EL-40 Emulsifier EL-60,2~10% thiophosphoric acid imidazole salts extreme pressure anti-wear additives, 0.5~1%
The defoaming agent.Thus obtained lubricant for drilling fluid has good greasy property.
It according to some embodiments of the present invention, by weight percentage, include 20~25% in the lubricant for drilling fluid
Rapeseed oil, 25~30% polyethers, 25~30% esters base oil, 8~15% Span-80 sorbitan oleic acid
Ester, 5~1500% EL-40 Emulsifier EL-60,2~5% thiophosphoric acid imidazole salts extreme pressure anti-wear additives, 0.5~1%
The defoaming agent.Thus obtained lubricant for drilling fluid has good greasy property.
According to some embodiments of the present invention, the esters base oil is selected from trimellitate, trimethylolpropane oleic acid
At least one of ester, pentaerythritol oleate, phthalic acid ester.Heretofore described esters base oil can be dimer ester
Or multi-polyester, it is preferably selected from trimellitate, tricarboxymethyl propane oleate, pentaerythritol oleate, phthalic acid ester
At least one of, thus, it is possible to improve the greasy property of lubricant.
According to some embodiments of the present invention, the defoaming agent be selected from methyl-silicone oil, tributyl phosphate, phosphoric acid isobutyl ester,
At least one of polyethers glycerine.
According to the second aspect of the invention, the present invention provides a kind of preparation method of lubricant for drilling fluid, the drilling wells
Liquid lubricant is the lubricant for drilling fluid according to first aspect present invention any embodiment, and the method includes walking as follows
It is rapid:
By rapeseed oil, polyethers and the mixing of esters base oil are heated with stirring to 50-60 DEG C；
It is anti-that Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60 and thiophosphoric acid imidazole salts extreme pressure is added
Grinding agent, stirring；Defoaming agent is added, stirring obtains lubricant for drilling fluid.
According to the third aspect of the invention we, the present invention provides a kind of lubricant for drilling fluid in drilling fluid lubricating field
Using the lubricant for drilling fluid is the lubricant for drilling fluid according to first aspect present invention any embodiment, the brill
Mass fraction of the well liquid lubricant in the drilling fluid be 0.5% or more, preferably 1.0% or more, more preferably 1.0%~
3.0%.
It is obtained by the present invention to have the beneficial effect that lubricant for drilling fluid provided by the present invention has excellent abrasion resistance
And biological degradability has not significant impact the other performance of drilling fluid, such as viscosity, fluid loss when being applied to drilling fluid.
Specific embodiment
According to an aspect of the present invention, the present invention provides a kind of preparation method of lubricant for drilling fluid, including it is as follows
Step:
By rapeseed oil, polyethers and the mixing of esters base oil are heated with stirring to 50-60 DEG C；Span-80 sorbitan is added
Oleate, EL-40 Emulsifier EL-60 and thiophosphoric acid imidazole salts extreme pressure anti-wear additives, stirring；Defoaming agent is added, stirring obtains
To lubricant for drilling fluid.
According to an embodiment of the invention, Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60 is added
It is stirred 1-2 hours with after thiophosphoric acid imidazole salts extreme pressure anti-wear additives.
According to an embodiment of the invention, being stirred 1-2 hours after defoaming agent is added.
Lubricant for drilling fluid provided by the invention is to be with the good compound of the biological degradabilities such as rapeseed oil, polyethers and esters
Base oil is added anionic surfactant, nonionic surface active agent, extreme pressure anti-wear additives and defoaming agent and reconciles,
With excellent abrasion resistance and biological degradability, to the other performance of drilling fluid, such as viscosity, fluid loss are without obvious shadow
It rings, is a kind of environmental-friendly type drilling liquid lubricant.And lubricant is at low cost, reconciliation simple process.
According to drilling fluid types and drilled strata lithological characteristic, this lubricant additional amount is the 0.5%- of drilling fluid quality
3.0%, preferably 1.0%-3.0%.
The solution of the present invention is explained below in conjunction with embodiment.It will be understood to those of skill in the art that following
Embodiment is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.Particular technique or item are not specified in embodiment
Part, it described technology or conditions or is carried out according to the literature in the art according to product description.Agents useful for same or instrument
Production firm person is not specified in device, and being can be with conventional products that are commercially available.
Embodiment one
In the reaction kettle that can be heated, stir, it is firstly added 25.0 kilograms of rapeseed oil, 25.0 kilograms of polyethers and esters base
25.0 kilograms of plinth oil (tricarboxymethyl propane oleate) is heated with stirring to 55 DEG C, and Span-80 sorbitol anhydride oleate is added
10.0 kilograms, 12.0 kilograms of EL-40 Emulsifier EL-60,2.5 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives, stirring 1 are small
When, it is eventually adding 0.5 kilogram of methyl-silicone oil, continues stirring 1 hour, obtains thick pale yellow shape liquid, it is as provided by the invention
Lubricant for drilling fluid.
Then evaluate as follows the performance of lubricant: the greasy property of lubricant is by rower SY/T
6094 are evaluated.Lubrication in the slurry of base as defined in lubricant addition standard by various concentration, before and after measurement addition lubricant
Coefficient calculates the reduced rate of lubricating coefficient.
Calculation formula is Rk=(K0-K1)/K0× 100%, wherein RkFor lubricating coefficient reduced rate, K0For the lube system of base slurry
Number, K1For the coefficient of friction after lubricant is added in base slurry.
Lubricating coefficient reduced rate after lubricant is added in table 1
Experimental result is as shown in table 1, when the mass fraction that the lubricant that the embodiment of the present invention 1 provides is added is 1.0%,
Lubricating coefficient reduced rate has just reached 50.1%；When the mass fraction that lubricant is added is respectively 2.0% and 2.5%, lubrication
Coefficient reduced rate has respectively reached 72.3% and 74.1%, illustrates that lubricant provided by the invention has excellent antifriction performance.
Meanwhile test can be carried out to the biological degradability of lubricant as follows:
Using Sturm measuring is improved, concrete operations are as follows for biodegrade:
Determinand is placed in the test flask equipped with mineral substrate and Spawn incubation medium, makes to test with ultrasonic oscillation
Object sufficiently shakes up, and hatching test is carried out under the conditions of defined temperature.Assay flask is passed through without CO2Air, and with without examination
The assay flask for testing substance does reference experiments.The CO generated in biodegradation process2It is absorbed by the assay flask equipped with barium hydroxide, not
The barium hydroxide titration with hydrochloric acid of consumption, thereby determines that the CO generated in biodegradation process2.Biological degradation rate is by measured matter
The CO generated during test with reference test2Difference account for the CO that measured matter carbon content can be generated2Percentage come it is true
It is fixed.Test carries out at room temperature, makees standard reference liquid with aniline, examines the activity of Spawn incubation medium.Test period is 28 days.
The biological degradation rate of the lubricant measured is 93.5%.
Embodiment two
In the reaction kettle that can be heated, stir, it is firstly added 20.0 kilograms of rapeseed oil, 30.0 kilograms of polyethers and esters base
30.0 kilograms of plinth oil (tricarboxymethyl propane oleate) is heated with stirring to 55 DEG C, and Span-80 sorbitol anhydride oleate is added
8.0 kilograms, 10 kilograms of EL-40 Emulsifier EL-60,1.5 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives stir 1 hour,
It is eventually adding 0.5 kilogram of tributyl phosphate, continues stirring 1 hour, obtains thick pale yellow shape liquid, brill as provided by the invention
Well liquid lubricant.
The lubricant for drilling fluid that embodiment two is prepared is added in drilling fluid, is mentioned so that the embodiment of the present invention two is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 71.5%.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 92.3%.
Embodiment three
In the reaction kettle that can be heated, stir, it is firstly added 25.0 kilograms of rapeseed oil, 30.0 kilograms of polyethers and esters base
30.0 kilograms of plinth oil (tricarboxymethyl propane oleate) is heated with stirring to 55 DEG C, and Span-80 sorbitol anhydride oleate is added
8.0 kilograms, 5.0 kilograms of EL-40 Emulsifier EL-60,1.5 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives stir 1 hour,
It is eventually adding 0.5 kilogram of polyethers glycerine, continues stirring 1 hour, obtains thick pale yellow shape liquid, brill as provided by the invention
Well liquid lubricant.
The lubricant for drilling fluid that embodiment three is prepared is added in drilling fluid, is mentioned so that the embodiment of the present invention three is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 71.9%.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 92.9%.
Example IV
In the reaction kettle that can be heated, stir, it is firstly added 30.0 kilograms of rapeseed oil, 20.0 kilograms of polyethers and esters base
20.0 kilograms of plinth oil (pentaerythritol oleate) is heated with stirring to 55 DEG C, and Span-80 sorbitol anhydride oleate 15.0 is added
Kilogram, 10.0 kilograms of EL-40 Emulsifier EL-60,4 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives, stir 1 hour, most
1 kilogram of methyl-silicone oil is added afterwards, continues stirring 1 hour, obtains thick pale yellow shape liquid, drilling fluid profit as provided by the invention
Lubrication prescription.
The lubricant for drilling fluid that example IV is prepared is added in drilling fluid, is mentioned so that the embodiment of the present invention four is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 70.3%.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 88.3%.
Embodiment five
In the reaction kettle that can be heated, stir, it is firstly added 25.0 kilograms of rapeseed oil, 20.0 kilograms of polyethers and esters base
25.0 kilograms of plinth oil (phthalic acid ester) is heated with stirring to 55 DEG C, and Span-80 sorbitol anhydride oleate 16.0 thousand is added
Gram, 5.0 kilograms of EL-40 Emulsifier EL-60,8 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives, stir 1 hour, finally plus
Enter 1 kilogram of methyl-silicone oil, continues stirring 1 hour, obtain thick pale yellow shape liquid, drilling fluid lubricating as provided by the invention
Agent.
The lubricant for drilling fluid that embodiment five is prepared is added in drilling fluid, is mentioned so that the embodiment of the present invention five is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 70.1%.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 89.1%.
Comparative example one
In the reaction kettle that can be heated, stir, it is firstly added 35.0 kilograms of rapeseed oil, 25.0 kilograms of polyethers and three hydroxyl first
15.0 kilograms of base propane oleate is heated with stirring to 55 DEG C, and 10.0 kilograms of Span-80 sorbitol anhydride oleate, EL- is added
40 12.0 kilograms of Emulsifier EL-60s, 2.5 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives stir 1 hour, are eventually adding first
0.5 kilogram of base silicone oil, continues stirring 1 hour, obtain thick pale yellow shape liquid, lubricant for drilling fluid as provided by the invention.
The lubricant for drilling fluid that comparative example one is prepared is added in drilling fluid, is mentioned so that comparative example one of the present invention is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 63.8%.
Compared with embodiment one, when the content for improving rapeseed oil, when reducing the dosage of esters base oil, obtained drilling well
The greasy property of liquid lubricant declines.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 83%.
Comparative example two
In the reaction kettle that can be heated, stir, it is firstly added 35.0 kilograms of rapeseed oil, 15.0 kilograms of polyethers and three hydroxyl first
25.0 kilograms of base propane oleate is heated with stirring to 55 DEG C, and 10.0 kilograms of Span-80 sorbitol anhydride oleate, EL- is added
40 12.0 kilograms of Emulsifier EL-60s, 2.5 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives stir 1 hour, are eventually adding first
0.5 kilogram of base silicone oil, continues stirring 1 hour, obtain thick pale yellow shape liquid, lubricant for drilling fluid as provided by the invention.
The lubricant for drilling fluid that comparative example two is prepared is added in drilling fluid, is mentioned so that comparative example two of the present invention is added
For the mass fraction of the lubricant of confession is 2.0%, the lubricating coefficient reduced rate that drilling fluid is calculated is 60.1%.
Compared with embodiment one, when content of the polyethers in lubricant for drilling fluid declines, acquired lubricant for drilling fluid
Greasy property also decline.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 81.4%.
Comparative example three
In the reaction kettle that can be heated, stir, it is firstly added 25.0 kilograms of rapeseed oil, 25.0 kilograms of polyethers and three hydroxyl first
25.0 kilograms of base propane oleate is heated with stirring to 55 DEG C, and 5.0 kilograms of Span-80 sorbitol anhydride oleate, EL-40 is added
7.5 kilograms of Emulsifier EL-60,12.0 kilograms of thiophosphoric acid imidazole salts extreme pressure anti-wear additives stir 1 hour, are eventually adding methyl
0.5 kilogram of silicone oil, continues stirring 1 hour, obtain thick pale yellow shape liquid, lubricant for drilling fluid as provided by the invention.
The lubricant for drilling fluid that comparative example three is prepared is added in drilling fluid, is mentioned so that comparative example three of the present invention is added
For the mass fraction of the lubricant of confession is 2.0%, according to the method that embodiment one provides, the lube system of drilling fluid is calculated
Number reduced rate is 62.5%.
Compared with embodiment one, when the content of the thiosulfuric acid imidazole salts extreme pressure anti-wear additives in lubricant for drilling fluid increases
When, the greasy property decline of obtained lubricant for drilling fluid.
The method provided simultaneously according to embodiment one, the biological degradation rate for obtaining lubricant is 80.1%.
In short, lubricant for drilling fluid provided by the present invention has excellent abrasion resistance and biological degradability, Er Qieying
When for drilling fluid, the other performance of drilling fluid, such as viscosity, fluid loss are had not significant impact.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of lubricant for drilling fluid characterized by comprising rapeseed oil, polyethers, esters base oil, Span-80 D-sorbite
Acid anhydride oleate, EL-40 Emulsifier EL-60, thiophosphoric acid imidazole salts extreme pressure anti-wear additives and defoaming agent.
2. lubricant for drilling fluid according to claim 1, which is characterized in that in parts by weight, the rapeseed oil be 20~
30 parts, the polyethers be 20~30 parts, the esters base oil is 20~30 parts, the Span-80 sorbitol anhydride oleate
Be 5~20 parts for 5~20 parts, the EL-40 Emulsifier EL-60, the thiophosphoric acid imidazole salts extreme pressure anti-wear additives be 2~
10 parts, the defoaming agent is 0.5~1 part.
3. lubricant for drilling fluid according to claim 1, which is characterized in that in parts by weight, the rapeseed oil be 20~
25 parts, the polyethers be 25~30 parts, the esters base oil is 25~30 parts, the Span-80 sorbitol anhydride oleate
For 8~15 parts, the EL-40 Emulsifier EL-60 be 5~15 parts, the thiophosphoric acid imidazole salts extreme pressure anti-wear additives are 2~5
Part, the defoaming agent is 0.5~1 part.
4. lubricant for drilling fluid according to claim 1, which is characterized in that by weight percentage, the drilling fluid profit
It include 20~30% rapeseed oil, 20~30% polyethers, 20~30% esters base oil, 5~20% Span- in lubrication prescription
80 sorbitol anhydride oleates, 5~20% EL-40 Emulsifier EL-60,2~10% thiophosphoric acid imidazole salts extreme pressure are anti-
Grinding agent, 0.5~1% defoaming agent.
5. lubricant for drilling fluid according to claim 1, which is characterized in that by weight percentage, the drilling fluid profit
It include 20~25% rapeseed oil, 25~30% polyethers, 25~30% esters base oil, 8~15% Span- in lubrication prescription
80 sorbitol anhydride oleates, 5~1500% EL-40 Emulsifier EL-60,2~5% thiophosphoric acid imidazole salts extreme pressure
Antiwear additive, 0.5~1% defoaming agent.
6. lubricant for drilling fluid according to any one of claims 1 to 5, which is characterized in that the esters base oil choosing
From at least one of trimellitate, tricarboxymethyl propane oleate, pentaerythritol oleate, phthalic acid ester.
7. lubricant for drilling fluid described according to claim 1~any one of 6, feature is for fear of the defoaming agent is selected from first
At least one of base silicone oil, tributyl phosphate, phosphoric acid isobutyl ester, polyethers glycerine.
8. the preparation method of lubricant for drilling fluid according to any one of claims 1 to 7, which is characterized in that including walking as follows
It is rapid:
By rapeseed oil, polyethers and the mixing of esters base oil are heated with stirring to 50-60 DEG C；
Span-80 sorbitol anhydride oleate, EL-40 Emulsifier EL-60 and thiophosphoric acid imidazole salts extreme-pressure anti-wear is added
Agent, stirring；
Defoaming agent is added, stirring obtains lubricant for drilling fluid.
9. application of the lubricant for drilling fluid according to any one of claims 1 to 7 in drilling fluid lubricating field, feature exist
In mass fraction of the lubricant for drilling fluid in the drilling fluid is 0.5% or more, preferably 1.0% or more, more preferably
It is 1.0%~3.0%.
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| CN201810729649.5A CN108949123A (en) | 2018-07-05 | 2018-07-05 | Lubricant for drilling fluid and its preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686189A (en) * | 2022-04-22 | 2022-07-01 | 中国石油天然气集团有限公司 | Lubricant for water-based drilling fluid, preparation method of lubricant and water-based drilling fluid |
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| CN101987987A (en) * | 2009-08-06 | 2011-03-23 | 中国科学院兰州化学物理研究所 | Imidazole salt extreme-pressure wear-resistant additive for rape seed oil and preparation method thereof |
| CN105694826A (en) * | 2015-07-07 | 2016-06-22 | 北京鑫翔源长顺润滑油有限责任公司 | Environmental-friendly drilling fluid lubricant |
| CN105368410A (en) * | 2015-11-27 | 2016-03-02 | 重庆焱津环保科技有限公司 | Lubricant for drilling fluid |
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| CN114686189A (en) * | 2022-04-22 | 2022-07-01 | 中国石油天然气集团有限公司 | Lubricant for water-based drilling fluid, preparation method of lubricant and water-based drilling fluid |
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Application publication date: 20181207 |