CN108165240A - A kind of preparation method of lubricant for drilling fluid - Google Patents
A kind of preparation method of lubricant for drilling fluid Download PDFInfo
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- CN108165240A CN108165240A CN201711469793.1A CN201711469793A CN108165240A CN 108165240 A CN108165240 A CN 108165240A CN 201711469793 A CN201711469793 A CN 201711469793A CN 108165240 A CN108165240 A CN 108165240A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2208/34—Lubricant additives
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Abstract
The invention discloses a kind of preparation methods of lubricant for drilling fluid, belong to field of oil drilling.It counts in parts by weight, 80~90 parts of miscellas are weighed successively, 20~30 parts of property of modified rectorite, 10~15 parts of modified micro-capsules and 3~5 parts of surfactants, miscella and property of modified rectorite are mixed in blender, and modified micro-capsule and surfactant are added in into blender, in temperature be 45~70 DEG C, after rotating speed is stirred 30~40min under conditions of being 200~350r/min, lubricant for drilling fluid is obtained.Gained lubricant for drilling fluid of the invention has excellent greasy property and high temperature resistance.
Description
Technical field
The invention discloses a kind of preparation methods of lubricant for drilling fluid, belong to field of oil drilling.
Background technology
In oil drilling process, fretting wear is inevitable.Friction damage specifically refers to contact with each other two
Surface of solids surface damage caused by rolling, slip or ballistic motion comes off.In most cases, friction is generated
The basic reason of damage is the result of surface micro-bulge interaction.It is produced wherein between drill string and casing, between drilling tool and the borehole wall
Raw friction damage is key wear；Simultaneously when boring big displacement and horizontal well, often coagulation exists drilling cuttings under the effect of gravity
Borehole bottom, which increases drill strings and the contact area of borehole bottom, frictional resistance is caused to increase considerably, torsion it is excessive, very
The generation of the accidents such as hole instability and bit freezing can be extremely caused, can lead to not be drilled into target zone and scrap oil well when serious,
Bring huge economic loss.
Lubricant for drilling fluid is in all drilling fluid additives, for its property and role, belongs to independence phase
To stronger a kind of additive.And viewpoint there are two types of viscous cards whether is prevented to it：The first viewpoint thinks, drilling fluid
Lubricant reduces drill string and mud cake（Stratum）Between frictional resistance and torque during drill string rotating, so as to efficiently reduce
Adhere to bit freezing odds；Second of viewpoint think, due to being the condition that has relative motion feature in object with friction coefficient λ
It is lower measured, so adherency bit freezing, once occurring, the size for gluing card power is unrelated with λ value.
As petroleum exploration and development is to sea and deep formation are developed, shale oil-gas exploration and development accelerates, horizontal well quantity
Increasing increases with horizontal section length, and drillng operation is higher and higher to the greasy property requirement of drilling fluid.Highly-efficient lubricant can be effective
Drilling fluid lubricating performance is improved, is to solve the problems, such as one of chief technology of horizontal well frictional resistance.At present, lubricant for drilling fluid is big
There are about more than 170 kinds of 15 major class, account for additive for drilling fluid uses total amount 6% or so.In recent years, as drillng operation is to lubricity
Can be with the raising of environmental-protecting performance requirement, it is a variety of that people develop environmental friendly lubricant, extreme-pressure lubricant and nano lubricating agent etc. successively
New drilling fluid lubricant, portioned product have succeeded large-scale promotion application.But traditional lubricant for drilling fluid also exists at present
The problem of greasy property and bad high temperature resistance, therefore also need to study it.
Invention content
The present invention solves the technical problem of：For traditional lubricant for drilling fluid greasy property and high temperature resistance not
The problem of good, provides a kind of preparation method of lubricant for drilling fluid.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）By waste vegetable oil through sedimentation, after centrifugation, upper liquid is taken, obtains pretreatment waste vegetable oil；
（2）It will pretreatment waste vegetable oil and medium temperature coal tar in mass ratio 3：1~4：1 mixing, and add in the discarded plant of pretreatment
The low-carbon alcohols and the catalyst of 0.1~0.2 times of pretreatment discarded plant oil quality that 0.4~0.6 times of object oil quality, are stirred
Afterwards, miscella is obtained；
（3）By graphene oxide and paraffin in mass ratio 1：2~1：3 mixing, Freezing smashing obtain modified paraffin；
（4）By modified paraffin and organic siliconresin in mass ratio 1：2~1：3 mixing, and add in 0.1~0.3 times of organic siliconresin
Triethylene diamine, after being stirred, inorganic agent is obtained, by inorganic agent and sodium base rectorite in mass ratio 3：2~4：2 mixing, mistake
Filter, curing, obtains property of modified rectorite；
（5）By linseed oil and gelatin solution in mass ratio 1：15~1：20 mixing, and add in the sulfuric acid of 5~12 times of flax oil quality
Sodium solution after being stirred, obtains linseed oil mixed liquor, by linseed oil mixed liquor and formalin in mass ratio 12：1~18：1 is mixed
Close, obtain micro-capsule blank, micro-capsule blank cooled down, and adjust cooling after micro-capsule blank pH after, curing, filter washing, obtain micro-capsule；
（6）It will（N- amidino groups）Dodecylacrylamide and polyethyleneglycol derivative in mass ratio 2：1~4：1 mixing, and add in
The paracide and two cyclopentadienyls of 0.12~0.18 times of polyethyleneglycol derivative quality that 0.2~0.4 times of polyethyleneglycol derivative quality
Iron is stirred, and obtains modifying agent；
（7）By micro-capsule and water in mass ratio 1：2~1：3 mixing, and the modifying agent of 1~2 times of micro-capsule quality is added in, it is stirred
Afterwards, it filters, it is dry, obtain modified micro-capsule（Modifying process and modified micro-capsule）；
（8）It counts in parts by weight, weighs 80~90 parts of miscellas successively, 20~30 parts of property of modified rectorite, 10~15 parts of modifications are micro-
Capsule and 3~5 parts of surfactants, miscella are mixed with property of modified rectorite, and add in modified micro-capsule and surfactant, stirring
After mixing, lubricant for drilling fluid is obtained.
Step（2）The low-carbon alcohols are any one in methanol or ethyl alcohol.
Step（2）The catalyst is any one in p-methyl benzenesulfonic acid or thionyl chloride.
Step（3）The paraffin is the mineral wax mixture that carbon atom number is 22~28.
Step（4）The organic siliconresin is poly- methylsiloxane resin, and poly- ethyl organic siliconresin or poly- aryl are organic
Any one in silicones.
Step（5）The polyethyleneglycol derivative is in polyethylene glycol-p-methyl benzenesulfonic acid ester or polyethylene glycol salicylate
Any one.
Step（8）The surfactant is polysorbas20, any one in polysorbate60 or sorbester p17.
The beneficial effects of the invention are as follows：
（1）The present invention is passed through when preparing lubricant for drilling fluid using miscella, miscella by medium temperature coal tar and waste vegetable oil
Esterification is made, and medium temperature coal tar and waste vegetable oil are after esterification, medium temperature coal tar molecule and waste vegetable oil
Molecule is connected, so as to form the longer organic matter of carbochain, and since medium temperature coal tar can bear higher temperature, and then make
The heat-resisting quantity of product is improved；
（2）The present invention adds in property of modified rectorite when preparing lubricant for drilling fluid, and one side property of modified rectorite is after treatment
Surface is wrapped up by organic siliconresin, so as to make rectorite that can be present in product system as shaped plastics kollag, and then
The lubricity of product is improved, on the other hand, modified paraffin, the oxygen added in modified paraffin are used when preparing property of modified rectorite
Graphite alkene can be during the fixed line for preparing property of modified rectorite to rectorite surface migration, and is fixed on by organic siliconresin tired
Hold in the palm stone surface, since graphene oxide possesses preferable thermal conductivity, so as to make product when being subjected to high temperature can rapid dispersion heat,
Improve product heat-resisting quantity；
（3）The present invention adds in modified micro-capsule when preparing lubricant for drilling fluid, and modified micro-capsule surface is connected to amphiphatic
Imitated vesicle structure so as to make vesica that can be uniformly distributed in product, and due to the presence of tiny vesica, hinders in system between each substance
Power reduces, and then further improves the lubricity of product.
Specific embodiment
Waste vegetable oil is added in beaker, centrifugation point is moved into after 45~50min is settled under room temperature, and by beaker
It disembarks, after rotating speed is centrifuges 20~30min under conditions of 5000~8000r/min, takes upper liquid, must pre-process discarded
Vegetable oil；It will pretreatment waste vegetable oil and medium temperature coal tar in mass ratio 3：1~4：1 is mixed in flask, and into flask
It adds in the low-carbon alcohols of 0.4~0.6 times of pretreatment discarded plant oil quality and pre-processes 0.1~0.2 times of discarded plant oil quality
Catalyst is 80~100 DEG C in temperature, after rotating speed is stirred 30~40min under conditions of being 280~400r/min, obtains mixed
Close oil；By graphene oxide and paraffin in mass ratio 1：2~1：3 mixing are 55~65 DEG C in temperature, and rotating speed is 250~280r/
After being stirred 20~30min under conditions of min, Freezing smashing obtains modified paraffin；Modified paraffin and organic siliconresin are pressed into matter
Measure ratio 1：2~1：3 mixing, and 0.1~0.3 times of organic siliconresin is added in into the mixture of modified paraffin and organic siliconresin
Triethylene diamine is 50~60 DEG C in temperature, after rotating speed is stirred 10~15min under conditions of being 200~450r/min, obtains
Inorganic agent, by inorganic agent and sodium base rectorite in mass ratio 3：2~4：2 mixing, in temperature be 40~50 DEG C, rotating speed for 200~
Under conditions of 300r/min, after being stirred 10~30min, filtering obtains filter cake, by filter cake in the item that temperature is 80~120 DEG C
After curing 100~200min under part, property of modified rectorite is obtained；Linseed oil and mass fraction are pressed into quality for 3~6% gelatin solution
Than 1：15~1：20 mixing, and the quality of 5~12 times of addition flax oil quality is divided into the mixture of linseed oil and gelatin solution
Number is 24~37% metabisulfite solution, is 45~65 DEG C in temperature, rotating speed is stirred under conditions of being 250~350r/min
After 30~45min, linseed oil mixed liquor is obtained, linseed oil mixed liquor and mass fraction are pressed into quality for 30~40% formalin
Than 12：1~18：1 mixing is 60~75 DEG C in temperature, under conditions of rotating speed is 280~350r/min, it is stirred 15~
After 25min, micro-capsule blank is obtained, micro-capsule blank is cooled to 10~17 DEG C, and molten with the sodium hydroxide that mass fraction is 10~15%
Liquid adjust cooling after micro-capsule blank pH to 8~9 after, must pre-process micro-capsule blank, will pretreatment micro-capsule blank in temperature be 10
Cure 30~45min under conditions of~15 DEG C, obtain solidifying substance, solidifying substance is filtered into washing 6~8 times, obtains micro-capsule；It will（N- amidino groups）
Dodecylacrylamide and polyethyleneglycol derivative in mass ratio 2：1~4：1 is mixed in wide neck flask, and to wide neck flask
It is middle to add in 0.12~0.18 times of the paracide of 0.2~0.4 times of polyethyleneglycol derivative quality and polyethyleneglycol derivative quality
Ferrocene, in temperature be 28~48 DEG C, rotating speed be 250~380r/min under conditions of be stirred 45~85min after, must change
Property agent；By micro-capsule and water in mass ratio 1：2~1：3 mixing, and 1~2 times of micro-capsule quality is added in into the mixture of micro-capsule and water
Modifying agent, in temperature be 45~65 DEG C, rotating speed be 280~300r/min under conditions of, after being stirred 45~60min, mistake
Filter, obtains filter residue, under conditions of being 70~85 DEG C in temperature by filter residue after dry 20~40min, obtains modified micro-capsule；In parts by weight
Meter, weighs 80~90 parts of miscellas, 20~30 parts of property of modified rectorite, 10~15 parts of modified micro-capsules and 3~5 parts of surface-actives successively
Miscella and property of modified rectorite are mixed in blender by agent, and modified micro-capsule and surfactant are added in into blender, in
Temperature is 45~70 DEG C, after rotating speed is stirred 30~40min under conditions of being 200~350r/min, obtains lubricant for drilling fluid.
The low-carbon alcohols are any one in methanol or ethyl alcohol.The catalyst is any one in p-methyl benzenesulfonic acid or thionyl chloride.
The paraffin is the mineral wax mixture that carbon atom number is 22~28.The organic siliconresin be poly- methylsiloxane resin, poly- second
Any one in base organic siliconresin or poly- aryl organic siliconresin.The polyethyleneglycol derivative is polyethylene glycol-to toluene
Any one in sulphonic acid ester or polyethylene glycol salicylate.The surfactant is polysorbas20, is appointed in polysorbate60 or sorbester p17
Meaning is a kind of.
Example 1
Waste vegetable oil is added in beaker, after 50min is settled under room temperature, and beaker is moved into centrifugal separator, in
After rotating speed centrifuges 30min under conditions of being 8000r/min, upper liquid is taken, obtains pretreatment waste vegetable oil；Pretreatment is useless
Abandon vegetable oil and medium temperature coal tar in mass ratio 4：1 is mixed in flask, and pretreatment discarded plant oil is added in into flask
The low-carbon alcohols of 0.6 times of amount and the catalyst of 0.2 times of pretreatment discarded plant oil quality, in temperature be 100 DEG C, rotating speed 400r/
After being stirred 40min under conditions of min, miscella is obtained；By graphene oxide and paraffin in mass ratio 1：3 mixing, in temperature
It it is 65 DEG C, after rotating speed is stirred 30min under conditions of being 280r/min, Freezing smashing obtains modified paraffin；By modified paraffin with
Organic siliconresin in mass ratio 1：3 mixing, and organic siliconresin 0.3 is added in into the mixture of modified paraffin and organic siliconresin
Triethylene diamine again is 60 DEG C in temperature, after rotating speed is stirred 15min under conditions of being 450r/min, obtains inorganic agent, will
Inorganic agent and sodium base rectorite in mass ratio 4：2 mixing are 50 DEG C in temperature, and under conditions of rotating speed is 300r/min, stirring is mixed
After closing 30min, filtering obtains filter cake, under conditions of being 120 DEG C in temperature by filter cake after curing 200min, obtains property of modified rectorite；It will
Linseed oil and the gelatin solution in mass ratio 1 that mass fraction is 6%：20 mixing, and into the mixture of linseed oil and gelatin solution
The mass fraction for adding in 12 times of flax oil quality is 37% metabisulfite solution, is 65 DEG C in temperature, rotating speed is the item of 350r/min
After being stirred 45min under part, linseed oil mixed liquor is obtained, linseed oil mixed liquor is pressed with mass fraction for 40% formalin
Mass ratio 18：1 mixing is 75 DEG C in temperature, under conditions of rotating speed is 350r/min, after being stirred 25min, obtains micro-capsule base
Micro-capsule blank is cooled to 17 DEG C, and the pH of micro-capsule blank after cooling is adjusted with the sodium hydroxide solution that mass fraction is 15% by material
To after 9, micro-capsule blank must be pre-processed, cures 45min under conditions of being 15 DEG C in temperature by pretreatment micro-capsule blank, must cure
Solidifying substance is filtered washing 8 times, obtains micro-capsule by material；It will（N- amidino groups）Dodecylacrylamide presses matter with polyethyleneglycol derivative
Measure ratio 4：1 is mixed in wide neck flask, and add in into wide neck flask 0.4 times of polyethyleneglycol derivative quality paracide and
The ferrocene that 0.18 times of polyethyleneglycol derivative quality is 48 DEG C in temperature, and rotating speed is stirred under conditions of being 380r/min
After 85min, modifying agent is obtained；By micro-capsule and water in mass ratio 1：3 mixing, and micro-capsule quality is added in into the mixture of micro-capsule and water
2 times of modifying agent is 65 DEG C in temperature, and under conditions of rotating speed is 300r/min, after being stirred 60min, filtering obtains filter residue,
Under conditions of being 85 DEG C in temperature by filter residue after dry 40min, modified micro-capsule is obtained；It counts in parts by weight, weighs 90 parts successively and mix
Oil, 30 parts of property of modified rectorite, 15 parts of modified micro-capsules and 5 parts of surfactants are closed, miscella with property of modified rectorite is mixed in and is stirred
It mixes in machine, and modified micro-capsule and surfactant is added in into blender, be 70 DEG C in temperature, rotating speed is the condition of 350r/min
Under be stirred 40min after, obtain lubricant for drilling fluid.The low-carbon alcohols are methanol.The catalyst is p-methyl benzenesulfonic acid.It is described
Paraffin is the mineral wax mixture that carbon atom number is 28.The organic siliconresin is poly- methylsiloxane resin.The polyethylene glycol
Derivative is polyethylene glycol-p-methyl benzenesulfonic acid ester.The surfactant is polysorbas20.
Example 2
Waste vegetable oil is added in beaker, after 50min is settled under room temperature, and beaker is moved into centrifugal separator, in
After rotating speed centrifuges 30min under conditions of being 8000r/min, upper liquid is taken, obtains pretreatment waste vegetable oil；Pretreatment is useless
It abandons vegetable oil to be placed in flask, and is added in into flask and pre-process the low-carbon alcohols of 0.6 times of discarded plant oil quality and pre-process useless
The catalyst of 0.2 times of plant oil quality is abandoned, is 100 DEG C in temperature, rotating speed is stirred 40min under conditions of being 400r/min
Afterwards, miscella is obtained；By graphene oxide and paraffin in mass ratio 1：3 mixing are 65 DEG C in temperature, and rotating speed is the item of 280r/min
After being stirred 30min under part, Freezing smashing obtains modified paraffin；By modified paraffin and organic siliconresin in mass ratio 1：3 is mixed
It closes, and the triethylene diamine of 0.3 times of organic siliconresin is added in into the mixture of modified paraffin and organic siliconresin, be in temperature
60 DEG C, after rotating speed is stirred 15min under conditions of being 450r/min, inorganic agent is obtained, inorganic agent and sodium base rectorite are pressed into matter
Measure ratio 4：2 mixing are 50 DEG C in temperature, and under conditions of rotating speed is 300r/min, after being stirred 30min, filtering obtains filter cake,
Under conditions of being 120 DEG C in temperature by filter cake after curing 200min, property of modified rectorite is obtained；It is 6% by linseed oil and mass fraction
Gelatin solution in mass ratio 1：20 mix, and the matter of 12 times of flax oil quality is added in into the mixture of linseed oil and gelatin solution
The metabisulfite solution that score is 37% is measured, is 65 DEG C in temperature, after rotating speed is stirred 45min under conditions of being 350r/min, obtains
Linseed oil mixed liquor, by the formalin in mass ratio 18 that linseed oil mixed liquor and mass fraction are 40%：1 mixes, and is in temperature
75 DEG C, under conditions of rotating speed is 350r/min, after being stirred 25min, micro-capsule blank is obtained, micro-capsule blank is cooled to 17 DEG C,
And after the pH to 9 with micro-capsule blank after the sodium hydroxide solution adjusting cooling that mass fraction is 15%, micro-capsule blank must be pre-processed,
Cure 45min under conditions of being 15 DEG C in temperature by pretreatment micro-capsule blank, obtain solidifying substance, solidifying substance is filtered into washing 8 times, is obtained
Micro-capsule；It will（N- amidino groups）Dodecylacrylamide and polyethyleneglycol derivative in mass ratio 4：1 is mixed in wide neck flask, and
Add in into wide neck flask 0.18 times of the paracide of 0.4 times of polyethyleneglycol derivative quality and polyethyleneglycol derivative quality
Ferrocene is 48 DEG C in temperature, after rotating speed is stirred 85min under conditions of being 380r/min, obtains modifying agent；By micro-capsule and water
In mass ratio 1：3 mix, and the modifying agent of 2 times of micro-capsule quality is added in into the mixture of micro-capsule and water, are 65 DEG C in temperature, turn
Speed is done under conditions of 300r/min, after being stirred 60min, to filter, obtaining filter residue under conditions of being 85 DEG C in temperature by filter residue
After dry 40min, modified micro-capsule is obtained；It counts in parts by weight, weighs 90 parts of miscellas, 30 parts of property of modified rectorite, 15 parts of modifications successively
Miscella and property of modified rectorite are mixed in blender by micro-capsule and 5 parts of surfactants, and addition modification is micro- into blender
Capsule and surfactant are 70 DEG C in temperature, after rotating speed is stirred 40min under conditions of being 350r/min, obtain drilling fluid profit
Lubrication prescription.The low-carbon alcohols are methanol.The catalyst is p-methyl benzenesulfonic acid.The paraffin is the paraffin mixing that carbon atom number is 28
Object.The organic siliconresin is poly- methylsiloxane resin.The polyethyleneglycol derivative is polyethylene glycol-p-methyl benzenesulfonic acid
Ester.The surfactant is polysorbas20.
Example 3
Waste vegetable oil is added in beaker, after 50min is settled under room temperature, and beaker is moved into centrifugal separator, in
After rotating speed centrifuges 30min under conditions of being 8000r/min, upper liquid is taken, obtains pretreatment waste vegetable oil；Pretreatment is useless
Abandon vegetable oil and medium temperature coal tar in mass ratio 4：1 is mixed in flask, and pretreatment discarded plant oil is added in into flask
The low-carbon alcohols of 0.6 times of amount and the catalyst of 0.2 times of pretreatment discarded plant oil quality, in temperature be 100 DEG C, rotating speed 400r/
After being stirred 40min under conditions of min, miscella is obtained；By gelatin solution that linseed oil and mass fraction are 6% in mass ratio
1：20 mixing, and the sulphur that the mass fraction of 12 times of addition flax oil quality is 37% into the mixture of linseed oil and gelatin solution
Acid sodium solution is 65 DEG C in temperature, after rotating speed is stirred 45min under conditions of being 350r/min, obtains linseed oil mixed liquor, will
Linseed oil mixed liquor and the formalin in mass ratio 18 that mass fraction is 40%：1 mixing is 75 DEG C in temperature, and rotating speed is
Under conditions of 350r/min, after being stirred 25min, micro-capsule blank is obtained, micro-capsule blank is cooled to 17 DEG C, and use mass fraction
After pH to 9 for micro-capsule blank after 15% sodium hydroxide solution adjusting cooling, micro-capsule blank must be pre-processed, micro-capsule will be pre-processed
Blank cures 45min under conditions of being 15 DEG C in temperature, obtains solidifying substance, and solidifying substance is filtered washing 8 times, obtains micro-capsule；It will（N- amidines
Base）Dodecylacrylamide and polyethyleneglycol derivative in mass ratio 4：1 is mixed in wide neck flask, and into wide neck flask
Add in the paracide of 0.4 times of polyethyleneglycol derivative quality and the ferrocene of 0.18 times of polyethyleneglycol derivative quality, Yu Wen
It is 48 DEG C to spend, and after rotating speed is stirred 85min under conditions of being 380r/min, obtains modifying agent；By micro-capsule and water in mass ratio 1：3
Mixing, and add in into the mixture of micro-capsule and water the modifying agent of 2 times of micro-capsule quality, in temperature be 65 DEG C, rotating speed 300r/
Under conditions of min, after being stirred 60min, filtering obtains filter residue, dry 40min under conditions of being 85 DEG C in temperature by filter residue
Afterwards, modified micro-capsule is obtained；It counts in parts by weight, weighs 90 parts of miscellas, 30 parts of rectorites, 15 parts of modified micro-capsules and 5 parts of tables successively
Miscella and rectorite are mixed in blender by face activating agent, and modified micro-capsule and surfactant are added in into blender,
It is 70 DEG C in temperature, after rotating speed is stirred 40min under conditions of being 350r/min, obtains lubricant for drilling fluid.The low-carbon alcohols
For methanol.The catalyst is p-methyl benzenesulfonic acid.The paraffin is the mineral wax mixture that carbon atom number is 28.The organosilicon tree
Fat is poly- methylsiloxane resin.The polyethyleneglycol derivative is polyethylene glycol-p-methyl benzenesulfonic acid ester.The surfactant
For polysorbas20.
Example 4
Waste vegetable oil is added in beaker, after 50min is settled under room temperature, and beaker is moved into centrifugal separator, in
After rotating speed centrifuges 30min under conditions of being 8000r/min, upper liquid is taken, obtains pretreatment waste vegetable oil；Pretreatment is useless
Abandon vegetable oil and medium temperature coal tar in mass ratio 4：1 is mixed in flask, and pretreatment discarded plant oil is added in into flask
The low-carbon alcohols of 0.6 times of amount and the catalyst of 0.2 times of pretreatment discarded plant oil quality, in temperature be 100 DEG C, rotating speed 400r/
After being stirred 40min under conditions of min, miscella is obtained；By graphene oxide and paraffin in mass ratio 1：3 mixing, in temperature
It it is 65 DEG C, after rotating speed is stirred 30min under conditions of being 280r/min, Freezing smashing obtains modified paraffin；By modified paraffin with
Organic siliconresin in mass ratio 1：3 mixing, and organic siliconresin 0.3 is added in into the mixture of modified paraffin and organic siliconresin
Triethylene diamine again is 60 DEG C in temperature, after rotating speed is stirred 15min under conditions of being 450r/min, obtains inorganic agent, will
Inorganic agent and sodium base rectorite in mass ratio 4：2 mixing are 50 DEG C in temperature, and under conditions of rotating speed is 300r/min, stirring is mixed
After closing 30min, filtering obtains filter cake, under conditions of being 120 DEG C in temperature by filter cake after curing 200min, obtains property of modified rectorite；It will
Linseed oil and the gelatin solution in mass ratio 1 that mass fraction is 6%：20 mixing, and into the mixture of linseed oil and gelatin solution
The mass fraction for adding in 12 times of flax oil quality is 37% metabisulfite solution, is 65 DEG C in temperature, rotating speed is the item of 350r/min
After being stirred 45min under part, linseed oil mixed liquor is obtained, linseed oil mixed liquor is pressed with mass fraction for 40% formalin
Mass ratio 18：1 mixing is 75 DEG C in temperature, under conditions of rotating speed is 350r/min, after being stirred 25min, obtains micro-capsule base
Micro-capsule blank is cooled to 17 DEG C, and the pH of micro-capsule blank after cooling is adjusted with the sodium hydroxide solution that mass fraction is 15% by material
To after 9, micro-capsule blank must be pre-processed, cures 45min under conditions of being 15 DEG C in temperature by pretreatment micro-capsule blank, must cure
Solidifying substance is filtered washing 8 times, obtains micro-capsule by material；It will（N- amidino groups）Dodecylacrylamide presses matter with polyethyleneglycol derivative
Measure ratio 4：1 is mixed in wide neck flask, and add in into wide neck flask 0.4 times of polyethyleneglycol derivative quality paracide and
The ferrocene that 0.18 times of polyethyleneglycol derivative quality is 48 DEG C in temperature, and rotating speed is stirred under conditions of being 380r/min
After 85min, modifying agent is obtained；It counts in parts by weight, weighs 90 parts of miscellas, 30 parts of property of modified rectorite and 5 parts of surface-actives successively
Miscella and property of modified rectorite are mixed in blender, and surfactant is added in into blender by agent, in temperature be 70
DEG C, after rotating speed is stirred 40min under conditions of being 350r/min, obtain lubricant for drilling fluid.The low-carbon alcohols are methanol.It is described
Catalyst is p-methyl benzenesulfonic acid.The paraffin is the mineral wax mixture that carbon atom number is 28.The organic siliconresin is poly- methyl
Organic siliconresin.The polyethyleneglycol derivative is polyethylene glycol-p-methyl benzenesulfonic acid ester.The surfactant is polysorbas20.
Comparative example：The lubricant for drilling fluid of Wenan Chemical Co., Ltd. production.
1 to 4 gained lubricant for drilling fluid of example and comparative example product are subjected to performance detection, specific detection method is as follows：
Its friction coefficient is detected using NF-1 type frictionmeters；Through high temperature（160℃）Then aging 16h detects its property
Energy.Testing result is as shown in table 1：
Table 1：Performance detection table
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Friction coefficient | 0.09 | 0.24 | 0.21 | 0.18 | 0.35 |
After high temperature ageing, 1 gained lubricant for drilling fluid performance of example is unaffected.
By above-mentioned testing result it is found that present invention gained lubricant for drilling fluid has excellent greasy property and heat-resisting quantity
Energy.
Claims (7)
1. a kind of preparation method of lubricant for drilling fluid, it is characterised in that specifically preparation method is：
（1）By waste vegetable oil through sedimentation, after centrifugation, upper liquid is taken, obtains pretreatment waste vegetable oil；
（2）It will pretreatment waste vegetable oil and medium temperature coal tar in mass ratio 3：1~4：1 mixing, and add in the discarded plant of pretreatment
The low-carbon alcohols and the catalyst of 0.1~0.2 times of pretreatment discarded plant oil quality that 0.4~0.6 times of object oil quality, are stirred
Afterwards, miscella is obtained；
（3）By graphene oxide and paraffin in mass ratio 1：2~1：3 mixing, Freezing smashing obtain modified paraffin；
（4）By modified paraffin and organic siliconresin in mass ratio 1：2~1：3 mixing, and add in 0.1~0.3 times of organic siliconresin
Triethylene diamine, after being stirred, inorganic agent is obtained, by inorganic agent and sodium base rectorite in mass ratio 3：2~4：2 mixing, mistake
Filter, curing, obtains property of modified rectorite；
（5）By linseed oil and gelatin solution in mass ratio 1：15~1：20 mixing, and add in the sulfuric acid of 5~12 times of flax oil quality
Sodium solution after being stirred, obtains linseed oil mixed liquor, by linseed oil mixed liquor and formalin in mass ratio 12：1~18：1 is mixed
Close, obtain micro-capsule blank, micro-capsule blank cooled down, and adjust cooling after micro-capsule blank pH after, curing, filter washing, obtain micro-capsule；
（6）It will（N- amidino groups）Dodecylacrylamide and polyethyleneglycol derivative in mass ratio 2：1~4：1 mixing, and add in
The paracide and two cyclopentadienyls of 0.12~0.18 times of polyethyleneglycol derivative quality that 0.2~0.4 times of polyethyleneglycol derivative quality
Iron is stirred, and obtains modifying agent；
（7）By micro-capsule and water in mass ratio 1：2~1：3 mixing, and the modifying agent of 1~2 times of micro-capsule quality is added in, it is stirred
Afterwards, it filters, it is dry, obtain modified micro-capsule；
（8）It counts in parts by weight, weighs 80~90 parts of miscellas successively, 20~30 parts of property of modified rectorite, 10~15 parts of modifications are micro-
Capsule and 3~5 parts of surfactants, miscella are mixed with property of modified rectorite, and add in modified micro-capsule and surfactant, stirring
After mixing, lubricant for drilling fluid is obtained.
2. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（2）It is described low
Carbon alcohol is any one in methanol or ethyl alcohol.
3. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（2）It is described to urge
Agent is any one in p-methyl benzenesulfonic acid or thionyl chloride.
4. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（3）The stone
Wax is the mineral wax mixture that carbon atom number is 22~28.
5. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（4）It is described to have
Machine silicones is poly- methylsiloxane resin, any one in poly- ethyl organic siliconresin or poly- aryl organic siliconresin.
6. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（5）It is described poly-
Ethylene glycol derivative is any one in polyethylene glycol-p-methyl benzenesulfonic acid ester or polyethylene glycol salicylate.
7. a kind of preparation method of lubricant for drilling fluid according to claim 1, it is characterised in that：Step（8）The table
Face activating agent is polysorbas20, any one in polysorbate60 or sorbester p17.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109135691A (en) * | 2018-09-07 | 2019-01-04 | 中石化石油工程技术服务有限公司 | Lubricant for drilling fluids composition and preparation method thereof and water-base drilling fluid and its application |
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