CN107011876B - A kind of drilling fluid compounded lubricant and preparation method thereof, application - Google Patents
A kind of drilling fluid compounded lubricant and preparation method thereof, application Download PDFInfo
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- CN107011876B CN107011876B CN201710361746.9A CN201710361746A CN107011876B CN 107011876 B CN107011876 B CN 107011876B CN 201710361746 A CN201710361746 A CN 201710361746A CN 107011876 B CN107011876 B CN 107011876B
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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
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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
Abstract
The invention provides drilling fluid compounded lubricant, is mainly made by following raw material：In terms of mass fraction, 60 90 parts of AEO, 30 60 parts of fatty acid ester, 20 40 parts of animal fat, 5 10 parts of styrene, water-soluble 59 parts of carbon black, 25 parts of graphite alkenes material, 13 parts of extreme pressure anti-wear additives, 13 parts of dispersant, 13 parts of defoamer are discarded.Preparation method includes：By AEO, fatty acid ester, discarded animal fat and styrene are mixed evenly；Water-soluble carbon black is added successively, and graphite alkenes material, extreme pressure anti-wear additives, dispersant, defoamer mixing, side is stirred and is cooled to 50 70 DEG C, forms uniform emulsion and produce.Drilling fluid compounded lubricant temperature resistance itself, the anti-pressure ability of the present invention is strong, still can keep good greasy property under high-temperature and high-pressure conditions, its composition does not include the composition of pollution mainly using biodiesel as raw material.
Description
Technical field
The present invention relates to oil drilling preparation field, in particular to a kind of drilling fluid compounded lubricant and its system
Preparation Method, application.
Background technology
As petroleum exploration and development is to deep and marine development, deep-well, ultradeep well and special well probing are increasingly
It is more, the particularly probing of superhigh temperature, super-pressure stratum, requirements at the higher level are also proposed accordingly to drilling fluid.
Mud shale stratum easy aquation, great negative effect is brought to drillng operation because its contained clay ratio is high,
Often occur a series of down hole problems such as borehole well instability, caliper expansion, bit freezing, moment of torsion and resistance increase in drilling process, increase
Drilling well difficulty is added.In oil drilling completion practice, drill bit is unavoidable when creeping into produce various frictions, cause equipment to grind
Damage.In order to reduce component of machine in operation because of friction and caused by energy loss and device damage, countries in the world are actively ground
The various lubricant mediums to reduce frictional resistance, slow down its abrasion, i.e. lubricant for drilling fluid are made, to reach the mesh of lubrication drag reduction
's.
Lubricant main purpose used in general drilling fluid is that the coefficient of viscosity of mud cake is reduced to reduce frictional resistance,
But temperature resistance ability itself is poor, lubricant effect is significantly deteriorated under conditions of high temperature and high salt, adds deep drilling construction
Middle differential sticking, the easily de- pressure of drilling rod, especially in irregular hole diameter and inclined shaft and directional well, the abrasion increase to drilling rod.
In addition, drilling well of the prior art is mostly mineral type lubricant with lubricating oil, main component is hydrocarbon compound, this
The lubricating oil of type not environmentally, can be trapped in water and soil during use in itself, pollute environment, and damage ratio is tighter
Also the microorganism of soil can be caused to poison during weight, so seriously limit the application of lubricant in itself, be unfavorable for
Continue to expand application.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of drilling fluid compounded lubricant, the compounded lubricant by raw material it
Between mutual 5 match somebody with somebody after, compounded lubricant temperature resistance itself, the anti-pressure ability being prepared are strong, under high-temperature and high-pressure conditions according to
Old to keep good greasy property, its composition fatty acid ester etc., does not have mainly using biodiesel as raw material, such as animal fat
There is the composition for including pollution, it is more environmentally friendly, suitable for wide popularization and application, and it has been correspondingly improved these discarded animal oil
The added value of fat, realizes resource reutilization.
The second object of the present invention is the preparation method for providing above-mentioned compounded lubricant, and preparation method is relatively easy, behaviour
Facilitate, operating condition is also relatively gentleer, and front and rear step linking is close, and three wastes produce, safety and environmental protection, belongs to preferably a kind of
Preparation method.
The third object of the present invention is the application for providing above-mentioned drilling fluid compounded lubricant, can be widely applied to oil field
Drilling applications, it is added in drilling well base fluid and uses, it is easy to use, suitable for wide popularization and application.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
The invention provides a kind of drilling fluid compounded lubricant, mainly it is made by following raw material：In terms of mass fraction, fat
Fat alcohol APEO 60-90 parts, fatty acid ester 30-60 parts discard animal fat 20-40 parts, and styrene 5-10 parts are water-soluble
Carbon black 5-9 parts, graphite alkenes material 2-5 parts, extreme pressure anti-wear additives 1-3 parts, dispersant 1-3 parts, defoamer 1-3 parts.
In the prior art, the lubricant main purpose used in general drilling fluid is to reduce frictional resistance, reduces mud cake
The coefficient of viscosity, but temperature resistance ability itself is poor, and lubricant effect is significantly deteriorated under conditions of high temperature and high salt, adds depth
Differential sticking in well wellbore construction, the easily de- pressure of drilling rod, especially in irregular hole diameter and inclined shaft and directional well, to drilling rod
Abrasion increase.
In addition, drilling well of the prior art is mostly mineral type lubricant with lubricating oil, main component is hydrocarbon compound, this
The lubricating oil of type not environmentally, can be trapped in water and soil during use in itself, pollute environment, and damage ratio is tighter
Also the microorganism of soil can be caused to poison during weight, so seriously limit the application of lubricant in itself, be unfavorable for
Continue to expand application.
The present invention is in order to solve the above technical problems, provide a kind of drilling fluid compounded lubricant, the compounded lubricant
It is the material composition of natural environmental-protective, make use of AEO, fatty acid ester, these natural goodses of discarded animal fat
After the advantage of some aspects of matter carries out compatibility with other components, the lubricant combination property being prepared is more excellent, prior art
In on the lubricant that is prepared of specific components raw material of the present invention be no any record, the solution of the present invention is for expanding
The marketing of big lubricant has important meaning.
In the present invention, AEO, fatty acid ester, discarded animal fat primarily serve lubricant effect
Major ingredient, except three of the above major ingredient, the present invention also creativeness with the addition of styrene, water-soluble carbon black, and graphite alkenes thing
Matter, the additions of these materials can cause high temperature, high pressure drilling operation course in, lubricant still can keep good profit
Sliding effect, improves the heat-resisting property of lubricant in itself, and further increase lubricant effect.
Wherein, the present invention is turned waste into wealth with waste animal and vegetable oil (gutter oil) for raw material, not only promotes China
" minimizing, innoxious, recycling " processing of domestic waste, constructs the Mode of Circular of sustainable development, green
Colour circle protects purifying contaminated thing, also improves the added value of corresponding discarded object, realizes resource reutilization.
Preferably, fatty acid ester includes one kind in glycerine fatty acid fat, propane diols list olein, triethanolamine oleate fat
Or several combination.
In the present invention, graphene is a kind of two-dimensional material for the alveolate texture being made up of individual layer sp2 hydbridized carbon atoms,
With many excellent performances.The basic structural unit of graphene be organic material in most stable of benzene hexatomic ring, be at present most
Preferable two-dimension nano materials, it has the mechanical performance of excellent electric conductivity and high intensity, therefore is passed in novel energy, biology
There are wide Research Prospects in the fields such as sense, catalysis, optical material, and inventor is exactly the characteristic that make use of graphene itself, will
Its with that after other material matching uses, can significantly improve the various aspects of performance of lubricant, while water-soluble carbon black, styrene with
It can play a part of assisting synergy after graphene is compound, styrene can have more preferable intermiscibility with other greases, be it
His material provides the medium that preferably dissolves each other.
The graphite alkenes material of the present invention can include graphene, biomass graphene, graphene oxide, graphene and derive
One or more of mixing in thing, as long as belong to the material of graphene category class material in fact, the protection in the present invention
In the range of.
In addition, the present invention also added three kinds of auxiliary agents, extreme pressure anti-wear additives, dispersant and defoamer.Extreme pressure anti-wear additives
Effect is：During boundary lubrication, when metal surface is solely subjected to moderate duty, the additive can be attracted to metal watch
On face or with metal surface sharp wear, so as to reach wear-resistant effect.Extreme-pressure wear-resistant agent can include organic chloride, organic
One or more of combinations in phosphide, organic metal salt, borate.
Preferably, the organic chloride is chlorinated paraffin, chlorinated paraffin or chlorinated paraffin.
Preferably, the organic sulfur compound is sulfurized lard, sulfuration cottonseed oil or sulfide isobutene.
Preferably, the organic phosphorus compound are tricresyl phosphate, triphenyl phosphate, triethyl phosphate, tributyl phosphate
Or di-n-butyl phosphite.
Preferably, the organic metal salt for have dialkyl dithiocarbamate, dialkyl dithiophosphate or
Lead naphthenate.
Dispersant, which can be reduced, completes the time required for dispersion process and energy, the stable material disperse, modification material
Expect particle surface properties, adjust the motilities of material particles, dispersant of the invention may include xylonic acid sodium, polyacrylamide,
One or more of combinations in cellulose derivative.
Defoamer can reduce surface tension, suppress the generation or elimination of foam, be preferably selected when carrying out specifically chosen
Silanes defoamer, the type defoamer source is wide, easily obtains, and effect is good.
In order to further improve the effect of synergy after compatibility between lubricant raw material itself, it is preferably in each raw material dosage,
In terms of mass fraction, AEO 65-85 parts, fatty acid ester 35-55 parts, animal fat 25-35 parts, benzene second are discarded
Alkene 7-9 parts, water-soluble carbon black 6-8 parts, graphite alkenes material 3-4 parts, extreme pressure anti-wear additives 1-2 parts, dispersant 1-2 parts, defoamer
1-2 parts.
More preferably, 70 parts of AEO, 40 parts of fatty acid ester, discarded 30 parts of animal fat, 8 parts of styrene,
Water-soluble 7 parts of carbon black, 3 parts of graphite alkenes material, 2 parts of extreme pressure anti-wear additives, 2 parts of dispersant, 2 parts of defoamer.
In addition, AEO can also be 61 parts, 63 parts, 64 parts, 75 parts, 76 parts, 77 parts and 79
Part etc., fatty acid ester can be 31 parts, 32 parts, 33 parts, 34 parts, 45 parts, 46 parts, 47 parts, 49 parts etc., and these dosages can be with
Other raw materials carry out free matched combined to prepare lubricant.
Based polyether, synthetic fat have been carried out organic combination, styrene, water solubility by the present invention when preparing lubricant
Performance comparision is excellent in terms of temperature resistance in itself for carbon black, graphene, and these materials can strengthen lubricating oil under the high temperature conditions
Lubricant effect, avoid lubricant failure, it is seen that the addition of every kind of raw material make use of its own advantage, comprehensive after such interworking
Close and also obtained corresponding lifting in performance because water-soluble carbon black, graphene be in addition to high temperature resistant property is excellent, by with
Lubricant effect itself can also be correspondingly improved after other material interworkings, the performance of these effects is to need to rely on and other things
Mutual the 5 of matter are with caused by rear, and each raw material being related in a word in the present invention program can not lack, because invention
People has found only to match somebody with somebody this several raw material mutual 5 by substantial amounts of creative experiment could reach on rear obtained lubricant properties
To optimal.
In addition, in terms of raw material dosage, AEO, fatty acid ester, discarded animal fat can as major ingredient
Energy dosage is bigger, and other materials can play the effect of Synergistic, so dosage is unsuitable excessive, and if dosage is too big
Also be not easy to be well mixed, be unfavorable for subsequent applications, by groping to be optimal repeatedly in performance, add it is also unhelpful or
The effect run counter to desire may be played.These materials belong to usual products on the market in itself in fact, but for the present invention
Scheme key be protect raw material between it is this assemble relation mutually, can not because of these materials are relatively common cannot
Carry out interworking composition the solution of the present invention as raw material, also be also any record before Cucumber in these raw materials can be with
Oil drilling field is applied to, only can just obtain such inspiration in the case of with reference to the present invention.
The present invention additionally provides the preparation side of the lubricant except providing a kind of formula of drilling fluid compounded lubricant
Method, specifically comprise the following steps：
(A) by AEO, fatty acid ester, the 80-90 DEG C of mixing of animal fat and styrene is discarded
Uniformly；
(B) water-soluble carbon black, graphite alkenes material, extreme pressure anti-wear additives, dispersant, defoamer mixing are added successively
10-20min, side stirring are cooled to 50-70 DEG C, form uniform emulsion and produce.
The preparation method of the embodiment of the present invention is relatively easy, easy to operate, and operating condition is also relatively gentleer, front and rear step rank
Close, three wastes generation is connect, safety and environmental protection, belongs to preferably a kind of preparation method, but representative is prepared without other
Method, as long as the method for lubricant can be prepared within protection scope of the present invention with the composition of raw materials of the present invention.
Preferably, in step (A), the time control of stirring is in 10-18h, preferably 12h, by controlling suitable stirring
Time is more conducive to mix homogeneous, makes the product with excellent effect.
It is noted herein that by controlling charging sequence, can promote preferably to merge into each other between raw material, according to
The characteristic of every kind of raw material is put together with the material for being easier to mix and carries out mix and match, is more conducively merged.And styrene
Can be more sticky after mixing, if added afterwards, the material mixing for being unfavorable for first adding with other is uniform, its mixing temperature needed
Also it is just relatively high, and can meet to require according to the operation temperature of 80-90 DEG C of this charging sequence of the present invention.
It should be noted that the operation temperature of each step is also to be determined according to the characteristic of institute's additive,
Only it just can guarantee that each raw material preferably merges under suitable temperature operating condition, to prepare the high product of quality preservation.
The temperature of the material mixings such as styrene generally requires higher, but the mass temperature such as water-soluble carbon black is than relatively low situation
Under can realize that fusion, or even some material normal temperature can also realize fusion, so what the temperature subsequently stirred suitably adjusted
It is lower, it is seen that temperature adjustment is also to have graded.
Preferably, in step (B), water-soluble carbon black, graphite alkenes material first carry out decentralized processing and added again before addition
Add；
Preferably, scattered method includes：Water-soluble carbon black, graphite alkenes material are well mixed with water, are ultrasonically treated
Add again afterwards；
More preferably, the Power Control of supersound process is in 500-1000w, and the time control of supersound process is in 5-30min.
The step of by increasing decentralized processing, the generation of each raw material agglomeration traits can be effectively prevented, prevents different-grain diameter
The problem of stress concentration point that (piece footpath) material is brought fracture because granularity it is too big or too it is small be unfavorable for being formed it is homogeneous
Material.
Finally, the embodiment of the present invention additionally provides the application process of lubricant, and lubricant is added in drilling well base fluid, profit
Lubrication prescription is the 2-8wt% of drilling well base fluid quality, it is therefore preferable to 3-7wt%, more excellent for 4-6wt%, best strict control dosage,
Because may also need to add other auxiliary agents such as lubricant etc. except lubricant in drilling fluid, each additive has
More excellent dosage scope, if strictly control may not also affect the effect performance of other auxiliary agents, so preferably controlling
System is within the scope of application claims.
Compared with prior art, beneficial effects of the present invention are：
(1) drilling fluid of the embodiment of the present invention is good with compounded lubricant heat resistance and thermal stability, and high temperature is high
Good greasy property still can be kept under the conditions of pressure, its composition is mainly using biodiesel as raw material, such as animal fat, fat
Sour fat etc., the composition of pollution is not included, more environmentally friendly, suitable for wide popularization and application, and it is useless to be correspondingly improved these
The added value for the animal fat abandoned, realizes resource reutilization, can be widely applied to oil drilling field；
(2) preparation method of drilling fluid compounded lubricant of the present invention, preparation method is relatively easy, easy to operate, operation
Condition is also relatively gentleer, and front and rear step linking is close, and three wastes produce, safety and environmental protection.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
The raw material of lubricant is matched according to following quality：
AEO 60kg, glycerine fatty acid fat 30kg, discard animal fat 40kg, styrene 5kg, water-soluble
Property carbon black 9kg, graphene 5kg, tricresyl phosphate, triphenyl phosphate 3kg, xylonic acid sodium 1kg, silanes defoamer 3kg；
Preparation method is as follows：
1) first by AEO, glycerine fatty acid fat, discards animal fat and styrene adds agitator tank
In, stir while being warming up to 80-90 DEG C；
2) by water-soluble carbon black, graphene, tricresyl phosphate, triphenyl phosphate, xylonic acid sodium, silanes defoamer according to
In secondary addition agitator tank, stir while regulating and controlling temperature is between 50-70 DEG C, after being thoroughly mixed 10-20min, obtain
Lubricant, the finished product of 10kg/ bags is packaged into, is preserved at air drying.
Embodiment 2
The raw material of lubricant is matched according to following quality：
AEO 90kg, propane diols list olein 60kg, animal fat 20kg, styrene 10kg are discarded,
Water-soluble carbon black 5kg, graphene 2kg, dialkyl dithiocarbamate 1kg, xylonic acid sodium, polyacrylamide 3kg, silane
Class defoamer 1kg；
Preparation method is as follows：
1) first by water-soluble carbon black, biomass graphene it is miscible with water after, be ultrasonically treated, ultrasonic power is
1000w, ultrasonic 5min form homogeneous mixed solution with scattered, standby；
2) first by AEO, propane diols list olein, discards animal fat and styrene adds stirring
In tank, stir while be warming up to 80-90 DEG C, stir 10h；
3) water-soluble carbon black will be contained, the mixed solution of biomass graphene, dialkyl dithiocarbamate is wooden
Sour sodium, polyacrylamide, silanes defoamer are sequentially added in agitator tank, stir while regulating and controlling temperature 50-70 DEG C it
Between, after being thoroughly mixed 10-20min, lubricant is obtained, is packaged into the finished product of 10kg/ bags, is protected at air drying
Deposit.
Embodiment 3
The raw material of lubricant is matched according to following quality：
AEO 65kg, triethanolamine oleate fat 55kg, discarded animal fat 25kg, styrene 7kg, water
Dissolubility carbon black 6kg, biomass graphene 3kg, triphenyl phosphate, triethyl phosphate 2kg, xylonic acid sodium, cellulose derivative
2kg, silanes defoamer 2kg；
Preparation method is as follows：
1) first by water-soluble carbon black, biomass graphene it is miscible with water after, be ultrasonically treated, ultrasonic power is
500w, ultrasonic 30min form homogeneous mixed solution with scattered, standby；
2) first by AEO, triethanolamine oleate fat, discards animal fat and styrene adds stirring
In tank, stir while be warming up to 80-90 DEG C, stir 18h；
3) water-soluble carbon black will be contained, the mixed solution of biomass graphene, triphenyl phosphate, triethyl phosphate are wooden
Sour sodium, cellulose derivative, silanes defoamer are sequentially added in agitator tank, are stirred while regulating and controlling temperature is at 50-70 DEG C
Between, after being thoroughly mixed 10-20min, lubricant is obtained, is packaged into the finished product of 10kg/ bags, is protected at air drying
Deposit.
Embodiment 4
The raw material of lubricant is matched according to following quality：
AEO 85kg, propane diols list olein, triethanolamine oleate fat 35kg, discard animal fat
35kg, styrene 9kg, water-soluble carbon black 8kg, biomass graphene 4kg, dialkyl dithiocarbamate 1kg, xylonic acid
Sodium, polyacrylamide 1kg, silanes defoamer 1kg；
Specific preparation method is consistent with embodiment 3.
Embodiment 5
The raw material of lubricant is matched according to following quality：
AEO 70kg, propane diols list olein 40kg, discarded animal fat 30kg, styrene 8kg, water
Dissolubility carbon black 7kg, biomass graphene 3kg, dialkyl dithiocarbamate 2kg, xylonic acid sodium, polyacrylamide 2kg,
Silanes defoamer 2kg；
Specific preparation method is consistent with embodiment 3.
Comparative example 1
Specific formula is consistent with embodiment 5, does not add water-soluble carbon black and biomass graphene simply.
Comparative example 2
Specific formula is consistent with embodiment 5, simply water-soluble carbon black 15kg, biomass graphene 2kg.
Comparative example 3
Specific formula is consistent with embodiment 5, simply water-soluble carbon black 2kg, biomass graphene 15kg.
Comparative example 4
Specific formula is consistent with embodiment 5, does not add biomass graphene simply.
Comparative example 5
The lubricating oil that embodiment 1 in the patent of Application No. 201310638855.2 is prepared.
Comparative example 6
The lubricating oil that embodiment 1 in Application No. 201510393502.X patents is prepared.
Application examples 1
1-5 of the embodiment of the present invention and comparative example 1-6 lubricant are added to base slurry (base according to 3wt% quality
Slurry is starched using general standard base) in, using mud cake sticking coefficient analyzer (NF-1 or equivalent product are measured), and press
The measure of mud cake sticking coefficient reduced rate and lubricating coefficient reduced rate is carried out to lubricating oil according to GB/T6680 regulation：
The measurement result of table 1
| Group | Mud cake sticking coefficient reduced rate (%) | Lubricating coefficient reduced rate (%) |
| Embodiment 1 | 80 | 80 |
| Embodiment 2 | 80 | 80 |
| Embodiment 3 | 80 | 85 |
| Embodiment 4 | 80 | 81 |
| Embodiment 5 | 82 | 82 |
| Comparative example 1 | 75 | 77 |
| Comparative example 2 | 78 | 76 |
| Comparative example 3 | 75 | 75 |
| Comparative example 4 | 78 | 78 |
| Comparative example 5 | 50 | 40 |
| Comparative example 6 | 40 | 60 |
As can be seen from the above Table 1, its combination property of the lubricant of embodiment of the present invention lubricant more of the prior art
More excellent, two parameters can be controlled more than 80%, but specific be combined as most preferably, if some raw materials is needed on raw material
Dosage may influence in the case of changing on performance, and general lubricating oil of the prior art can only ensure one of finger
Mark is more excellent.
By further experiment, lubricant is added in base slurry according to 4wt%, 6wt%, 7wt% quality also phase
Same experimental result.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (17)
1. a kind of drilling fluid compounded lubricant, it is characterised in that be made by following raw material：In terms of mass fraction, poly alkyl alcohol
Oxygen vinethene 60-90 parts, fatty acid ester 30-60 parts, discard animal fat 20-40 parts, styrene 5-10 parts, water-soluble carbon black 5-
9 parts, graphite alkenes material 2-5 parts, extreme pressure anti-wear additives 1-3 parts, dispersant 1-3 parts, defoamer 1-3 parts.
2. compounded lubricant according to claim 1, it is characterised in that AEO 65-85 parts, aliphatic acid
Fat 35-55 parts, discarded animal fat 25-35 parts, styrene 7-9 parts, water-soluble carbon black 6-8 parts, graphite alkenes material 3-4 parts,
Extreme pressure anti-wear additives 1-2 parts, dispersant 1-2 parts, defoamer 1-2 parts.
3. compounded lubricant according to claim 2, it is characterised in that 70 parts of AEO, fatty acid ester
40 parts, discarded 30 parts of animal fat, 8 parts of styrene, water-soluble 7 parts of carbon black, 3 parts of graphite alkenes material, 2 parts of extreme pressure anti-wear additives,
2 parts of dispersant, 2 parts of defoamer.
4. according to the compounded lubricant described in claim any one of 1-3, it is characterised in that the graphite alkenes material includes stone
One or more of mixing of black alkene, biomass graphene, graphene oxide, Graphene derivative.
5. according to the compounded lubricant described in claim any one of 1-3, it is characterised in that the fatty acid ester includes glyceride
One or more of combinations in fat acid fat, propane diols list olein, triethanolamine oleate fat.
6. according to the compounded lubricant described in claim any one of 1-3, it is characterised in that the extreme pressure anti-wear additives include organic
One or more of combinations in chloride, organic phosphorus compound, organic metal salt, borate.
7. according to the compounded lubricant described in claim any one of 1-3, it is characterised in that the dispersant includes xylonic acid
One or more of combinations in sodium, polyacrylamide, cellulose derivative.
8. according to the compounded lubricant described in claim any one of 1-3, it is characterised in that the defoamer defoams for silanes
Agent.
9. the preparation method of the compounded lubricant described in claim any one of 1-8, it is characterised in that comprise the following steps：
(A) AEO, fatty acid ester, discarded 80-90 DEG C of animal fat and styrene are mixed evenly；
(B) water-soluble carbon black, graphite alkenes material, extreme pressure anti-wear additives, dispersant, defoamer mixing 10- are added successively
20min, 50-70 DEG C is cooled to while stirring, form uniform emulsion and produce.
10. preparation method according to claim 9, it is characterised in that in the step (A), the time control of stirring exists
10-18h。
11. preparation method according to claim 10, in the step (A), the time control of stirring is 12h.
12. preparation method according to claim 9, it is characterised in that in the step (B), water-soluble carbon black, graphene
Class material first carries out decentralized processing and added again before addition.
13. preparation method according to claim 12, it is characterised in that in the step (B), the method bag of decentralized processing
Include：Water-soluble carbon black, graphite alkenes material are well mixed with water, added again after supersound process.
14. preparation method according to claim 13, it is characterised in that in the step (B), the power control of supersound process
Make in 500-1000w, the time control of supersound process is in 5-30min.
15. the application of the compounded lubricant described in claim any one of 1-8, it is characterised in that add the compounded lubricant
It is added in drilling well base fluid, the compounded lubricant is the 2-8wt% of the drilling well base fluid quality.
16. application according to claim 15, it is characterised in that the compounded lubricant is the drilling well base fluid quality
3-7wt%.
17. application according to claim 16, it is characterised in that the compounded lubricant is the drilling well base fluid quality
4-6wt%.
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| CN107502319A (en) * | 2017-08-15 | 2017-12-22 | 荆州市志翔化工有限公司 | A kind of Environment-protecting Drilling Fluids are with lubricator and preparation method |
| CN112226215A (en) * | 2019-07-15 | 2021-01-15 | 中石化石油工程技术服务有限公司 | Lubricating anti-sloughing agent for drilling fluid |
| CN113214805B (en) * | 2020-02-06 | 2022-07-15 | 中国石油化工股份有限公司 | Lubricant for drilling fluid and preparation method and application thereof |
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