CN109608981A - A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method - Google Patents
A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method Download PDFInfo
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- CN109608981A CN109608981A CN201811377577.9A CN201811377577A CN109608981A CN 109608981 A CN109608981 A CN 109608981A CN 201811377577 A CN201811377577 A CN 201811377577A CN 109608981 A CN109608981 A CN 109608981A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
A kind of water injection well of the present invention resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method, graphene dispersing solution is added in propanepoxy resin, is uniformly mixed；Then auxiliary agent is added, is uniformly mixed；Novolac epoxy resin is added, is uniformly mixed；Pigments and fillers are eventually adding, mixed liquor is obtained；Mixed liquor is ground to fineness less than 20 microns, auxiliary agent is then added, 3~5min is stirred, obtains coating component A；Coating component A is uniformly mixed with curing agent, obtains water injection well with resistance to 110 celsius temperature graphene modified epoxy resin mortar.Coating of the invention is filled in the gap of coating because of the graphene of nanoscale, so effectively increasing the impermeability and corrosion resisting property of coating, its heat resistance reaches 148 DEG C, has excellent antiseptic property in the underground water-injection operating condition lower than 110 DEG C (containing).
Description
Technical field
The invention belongs to oil well pipe corrosion and protection technical fields, and in particular to a kind of resistance to 110 degrees Celsius of height of water injection well
Warm graphene modified epoxy resin mortar and preparation method and application.
Background technique
As oilfield exploration and development is goed deep into, oil field development has entered High water cut or superelevation water-cut stage.Oil-field flooding
Well casing column is due to its gas and water, oil, the admittedly multiphase coupled corrosive medium that coexists, high temperature and pressure and changeable anticorrosion work environment,
Tubing string damage problem is got worse, it has also become the difficult point of corrosion protection.Painting/coating protection technology is the water filling that oil field uses earliest
Well casing column corrosion control measure, and achieve preferable economic benefits.
However, there are following limitations for traditional water injection pipe painting/coating protection technology: its ontology of organic coating is difficult to avoid that
Containing the intrinsic defects such as pin hole, wear-resisting erosive wear resistance is poor, and coating is difficult to prevent Cl-, H under hot environment2O and O2Etc. small point
The infiltration of son, and it is easy to aging；For the plating layer, under the premise of guaranteeing anti-corrosion effect, to the thickness and consistency requirements of coating
Height needs to add the precious metal elements such as more Ni, W accordingly, causes its increased costs, and technique for preparing coating control is also
Wait improve；And there is the problems such as durability is poor in nitriding carbon steel oil pipe, passivation of metal surfaces oil pipe, to influence the anti-of water injection pipe
Rotten effect and service life.Currently, Oil Field water injection well is usually no more than 80 being recommended to use temperature with epoxy coating oil pipe
℃.However, water filling well depth has surpassed 4000 meters, and service temperature is more than 102 DEG C with the exploitation of deep & ultra-deep well.
Therefore, oil and gas enterprise is to can be improved the stable economical water injection pipe painting/coating of water injection pipe service life, performance
Guard technology has strong production requirement.In recent years, graphene modified epoxy coating because have superior antiseptic property by
To extensive concern.However, up to now, the research of graphene modified epoxy coating and application are concentrated mainly on marine anticorrosion and wind-powered electricity generation
Corrosion-resistant field is related to the marine environment or atmospheric corrosion environment of room temperature and low temperature mostly；In the high temperature and pressure Service Environment of underground
Performance study have not been reported, more without relevant Applied D emonstration engineering.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of resistance to 110 celsius temperature graphite of water injection well
Alkene modified epoxy resin mortar and preparation method, the graphene modified epoxy coating tubing can be on active service for a long time in 110 DEG C of water filling operating conditions,
With excellent antiseptic property.
To achieve the above object, the present invention is to be achieved through the following technical solutions:
A kind of resistance to 110 celsius temperature graphene modified epoxy resin mortar of water injection well, by mass percentage, including
Propanepoxy resin: 36~38%
Novolac epoxy resin: 8~10%
Graphene: 0.05~0.1%
Pigments and fillers: 38~40%
Auxiliary agent: 0.1~0.4%
Organic solvent: 4~6%
Curing agent: 8~9%.
A further improvement of the present invention lies in that 190~260m of specific surface area of graphene2/ g, the number of plies 7~10 of graphene
Layer.
A further improvement of the present invention lies in that pigments and fillers be carbon black, talcum powder, barium sulfate, micaceous iron oxide, silicon carbide,
One or more of zinc sulfate.
A further improvement of the present invention lies in that auxiliary agent include dispersing aid, coupling agent, adhesive force auxiliary agent, defoaming agent and
Levelling agent.
A further improvement of the present invention lies in that curing agent is alicyclic modified amine.
A further improvement of the present invention lies in that organic solvent is dimethylbenzene, n-butanol, 1,4-butanediol diglycidyl ether
One or more of.
A kind of preparation method of the resistance to 110 celsius temperature graphene modified epoxy resin mortar of water injection well, comprising the following steps:
Step 1: graphene being added in organic solvent, ultrasound obtains graphene dispersing solution；
Step 2: by the propanepoxy resin of propanepoxy resin gross mass 4% to graphene dispersing solution
In, after mechanical stirring is uniform, ultrasound obtains graphene epoxy resin mixed liquor, and the number of plies of graphene is 1~4 layer after dispersion；
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining diphenol propane asphalt mixtures modified by epoxy resin
In rouge, it is uniformly mixed；Then auxiliary agent is added, is uniformly mixed；Novolac epoxy resin is added, is uniformly mixed；Finally by pigments and fillers
It is added, obtains mixed liquor；Wherein, auxiliary agent is dispersing aid；
Step 4: the mixed liquor in step 3 being ground to fineness less than 20 microns, auxiliary agent is then added, stirs evenly, obtains
To coating component A；Wherein, auxiliary agent includes coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent；
Step 5: coating component A uniformly being mixed with curing agent, water injection well is obtained and is changed with resistance to 110 celsius temperature graphene
Property epoxy coating.
It is a kind of coated with the water injection well oil pipe of resistance to 110 celsius temperature graphene modified epoxy resin mortar.
It is a kind of coated with the water injection well preparation method of the oil pipe of resistance to 110 celsius temperature graphene modified epoxy resin mortar,
Solvent is added, water injection well is adjusted to 45~50cst with resistance to 110 celsius temperature graphene modified epoxy resin mortar, then sprays
Onto pretreated oil pipe, low-temperature setting, the room temperature curing after surface drying obtains being coated with water injection well with resistance to 110 degrees Celsius of height
Warm graphene modified epoxy coating tubing.
A further improvement of the present invention lies in that low-temperature setting temperature is 50~60 DEG C, the time is 3~4h, when room temperature curing
Between be 5~7d, water injection well with resistance to 110 celsius temperature graphene modified epoxy coating layer thickness be 163~191 μm.
Compared with prior art, the invention has the benefit that
(1) a kind of water injection well resistance to 110 celsius temperature graphene modified epoxy coating tubing, the stone prepared in the present invention
After black alkene and propanepoxy resin and novolac epoxy resin are compound, obtained coating compactness is good.
(2) coating of the invention is filled in the gap of coating because of the graphene of nanoscale, so effectively increasing painting
The impermeability and corrosion resisting property of layer, heat resistance reach 148 DEG C, have in the underground water-injection operating condition lower than 110 DEG C (containing)
Excellent antiseptic property.
(3) when coating tubing of the invention preparation, a spray mo(u)lding effectively reduces existing coating tubing technology of preparing
In energy consumption.
(4) nanoscale graphene dispersion can significantly improve the impervious, resistance to of epoxy coating in the system of epoxy coating
High-temperature behavior and antiseptic property.And graphene large specific surface area, a small amount of graphene of addition can significantly improve the performance of coating；
The graphene price of oxidation-reduction method preparation is down to 3 yuan/gram；Therefore, compared to high-end novel painting/coating, the modified ring of graphene
Oxygen coating is more economical.
Further, coating tubing prepare when, only need (50~60 DEG C) solidification 3h of low temperature, then the normal temperature cure time 5~
6d, solidification temperature are lower, it is easy to accomplish.
Detailed description of the invention
Fig. 1 is the transmission electron microscope picture of graphene used in the embodiment of the present invention 1~3；
Fig. 2 is the transmission electron microscope after graphene used in the embodiment of the present invention 1~3 solidifies with epoxy resin mixed liquor
Figure；
Fig. 3 be the embodiment of the present invention 1 described in simulation oil field medium antiseptic property testing experiment result；(a) it is
Certain oil field is with aldehyde-titanium nano coating；It (b) is resistance to 110 celsius temperature graphene modified epoxy coating；
Fig. 4 be the embodiment of the present invention 2 described in alkaline medium high temperature high voltage resistant performance test result；(a) it is
Certain oil field is with epoxy coating；It (b) is resistance to 110 celsius temperature graphene modified epoxy coating.
Specific embodiment
Below in conjunction with drawings and examples, the following further describes the technical solution of the present invention.
The revolving speed stirred in the present invention is 120 turns/min.
Water injection well of the invention with resistance to 110 celsius temperature graphene modified epoxy resin mortar by mass percentage, including
Propanepoxy resin: 36~38%
Novolac epoxy resin: 8~10%
Graphene: 0.05~0.1%
Pigments and fillers: 38~40%
Auxiliary agent: 0.1~0.3%
Organic solvent: 4~6%
Curing agent: 8~9%.
Wherein, referring to Fig. 1,190~260m of specific surface area of graphene2/ g, 7~10 layers of the number of plies of graphene.
Pigments and fillers are one or more of carbon black, talcum powder, barium sulfate, micaceous iron oxide, silicon carbide, zinc sulfate.
Auxiliary agent is one or more of dispersing aid, coupling agent, adhesive force auxiliary agent, defoaming agent, levelling agent.Specifically,
Dispersing aid are as follows: BYK-161, coupling agent are as follows: KH560, adhesive force auxiliary agent are as follows: BYK-4510, defoaming agent are as follows: BYK-051, levelling
Agent are as follows: BYK-333.
Curing agent is alicyclic modified amine.
Organic solvent is one or more of dimethylbenzene, n-butanol and 1,4- butanediol diglycidyl ether.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1: above-mentioned mass percent to be pressed, graphene is added in organic solvent, ultrasound disperses graphene uniform,
Obtain graphene dispersing solution；Wherein, ultrasonic time 60min, supersonic frequency 6KHZ.
Step 2: the mechanical stirring into prefabricated graphene dispersing solution is added in propanepoxy resin gross mass 4%
Ultrasound, obtains graphene epoxy resin mixed liquor after uniformly, and the number of plies of graphene is 1~4 layer after dispersion, referring to fig. 2；Wherein,
Ultrasonic time is 90min, supersonic frequency 4KHZ.
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining diphenol propane asphalt mixtures modified by epoxy resin
In rouge, 10~12min of stirring makes to be uniformly mixed；Then auxiliary agent is added, 10~12min of stirring makes to be uniformly mixed；Add phenolic aldehyde
Epoxy resin, 10~12min of stirring make to be uniformly mixed；Pigments and fillers are eventually adding, mixed liquor is obtained.
Step 4: the mixed liquor in step 3 being ground into 50min, makes coating fineness less than 20 microns；Then auxiliary agent is added, stirs
3~5min is mixed, coating component A is obtained.
Step 5: coating component A uniformly being mixed with curing agent, water injection well is obtained and is changed with resistance to 110 celsius temperature graphene
Property epoxy coating.
It is a kind of coated with the above-mentioned water injection well preparation side of the oil pipe of resistance to 110 celsius temperature graphene modified epoxy resin mortar
Method are as follows:
Solvent is added into coating, viscosity of the coating is adjusted to 45~50cst, then sprays to pretreated oil pipe
On, 3~4h of low-temperature setting at 50~60 DEG C, 5~7d of room temperature curing after surface drying obtain water injection well with resistance to 110 degrees Celsius of height
Warm graphene modified epoxy coating tubing.
Pigments and fillers in the present invention are one of carbon black, talcum powder, barium sulfate, micaceous iron oxide, silicon carbide, zinc sulfate
Or it is several.When pigments and fillers be carbon black, talcum powder, barium sulfate, micaceous iron oxide, silicon carbide, two kinds or two kinds in zinc sulfate when, will
Pigments and fillers are added one by one, specifically: it is every a kind of pigments and fillers are added after stir 3~5min；Then another pigments and fillers is added.
It by two or more pigments and fillers while not being added instead of, is added one by one.
Embodiment 1
The component and its weight percent of coating are as follows:
Propanepoxy resin: 36%
Novolac epoxy resin: 10%
Graphene: 0.1%
Pigments and fillers: 40%
Auxiliary agent: 0.4%
Organic solvent: 4.5%
Curing agent: 9%
Referring to Fig. 1,190~260m of specific surface area of the graphene2/ g, 7~10 layers of the number of plies of graphene.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1: by mass percentage, 0.1% graphene being mixed with 4.5% organic solvent, in supersonic frequency
For ultrasound 60min under 6KHZ, graphene dispersing solution is obtained.Wherein, organic solvent is n-butanol；
Step 2: 36% propanepoxy resin being divided into two parts, first part total for propanepoxy resin
The 4% of quality, remaining as second part；First part of propanepoxy resin is added into graphene dispersing solution, machinery stirs
After mixing uniformly, the ultrasound 90min in the case where supersonic frequency is 4KHZ obtains graphene epoxy resin mixed liquor, graphene after dispersion
The number of plies is 1~4 layer, referring to fig. 2；
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining diphenol propane asphalt mixtures modified by epoxy resin
In rouge, 12min is stirred at 120 turns/min to uniform mixing；Then 0.2% dispersing aid is added, 10min is to uniform for stirring
Mixing；The novolac epoxy resin for adding 10% is eventually adding 40% pigments and fillers (carbon black), obtains mixed liquor.
Step 4: the mixed liquor in step 3 being ground into 50min, makes coating fineness less than 20 microns；Then it is added 0.2%
Coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent stir 3min, obtain mixed liquor.
Step 5: 9% curing agent being added in the mixed liquor of step 4, be uniformly mixed, it is Celsius with resistance to 110 to obtain water injection well
Spend pyrographite alkene modified epoxy resin mortar.
It is a kind of coated with the above-mentioned water injection well preparation side of the oil pipe of resistance to 110 celsius temperature graphene modified epoxy coating
Method: organic solvent being added into coating, and viscosity of the coating is adjusted to 45~50cst, is then coated in coating and marks according to country
The quasi- processed oil pipe surface GB/T8923.1, solidifies 3h, then normal temperature cure 6d at 50 °C, obtains water injection well with resistance to
110 celsius temperature graphene modified epoxy coating tubings.
To in embodiment 1 Coating Surface Roughness and thickness test, measure 10 times, coating is minimum with a thickness of 163 μ
m；Average thickness is 182 μm.
To being coated on oil pipe of the water injection well with resistance to 110 celsius temperature graphene modified epoxy coating in embodiment 1
Sample is cut, and carries out antiseptic property test, as a control group with the common aldehyde-titanium nano coating in certain oil field, at 110 DEG C, pressure is
60d is impregnated in 10Mpa well injection water quality.Test result is as shown in figure 3, (a) and (b) is as can be seen that titanium nanometer applies from Fig. 3
There is bubbling phenomenon in layer, and resistance to 110 degrees Celsius of epoxy coatings test front and back of the invention is without significant change.
Embodiment 2
The component and its weight percent of coating are as follows:
Propanepoxy resin: 38%
Novolac epoxy resin: 9%
Graphene: 0.05%
Pigments and fillers: 38.6%
Auxiliary agent: 0.35%
Organic solvent: 5%
Curing agent: 9%
190~260m of specific surface area of the graphene2/ g, 7~10 layers of the number of plies of graphene.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1: by mass percentage, 0.05% graphene being mixed with 5% organic solvent, is in supersonic frequency
Ultrasound 60min, obtains graphene dispersing solution under 6KHZ.Wherein, organic solvent is dimethylbenzene；
Step 2: 38% propanepoxy resin being divided into two parts, first part total for propanepoxy resin
The 4% of quality, remaining as second part；By the diphenol propane asphalt mixtures modified by epoxy resin of first part of propanepoxy resin gross mass 4%
Rouge is added into graphene dispersing solution, and after mechanical stirring is uniform, the ultrasound 90min in the case where supersonic frequency is 4KHZ obtains graphene
Epoxy resin mixed liquor, the number of plies of graphene is 1~4 layer after dispersion；
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining diphenol propane asphalt mixtures modified by epoxy resin
In rouge, 12min is stirred at 120 turns/min to uniform mixing；Then plus 0.15% dispersing aid, stirring 10min are mixed to uniform
It closes；9% novolac epoxy resin is added in above-mentioned mixture again, finally by 38.6% pigments and fillers, pigments and fillers are specially to slide
Mountain flour, barium sulfate and micaceous iron oxide, it is every that a kind of pigments and fillers are added, another pigments and fillers are added after stirring 3min；Finally stir
It mixes uniformly, obtains mixed liquor.
Step 4: the mixed liquor in step 3 being ground into 50min, 0.2% coupling agent, adhesive force auxiliary agent, defoaming agent is added
And levelling agent, 3min is stirred, mixed liquor is obtained.
Step 5: 9% curing agent being added in the mixed liquor of step 4, uniformly mix, it is Celsius with resistance to 110 to obtain water injection well
Spend pyrographite alkene modified epoxy resin mortar.
It is a kind of coated with the above-mentioned water injection well preparation side of the oil pipe of resistance to 110 celsius temperature graphene modified epoxy coating
Method: organic solvent being added into coating, and viscosity of the coating is adjusted to 45~50cst, is then coated in GB/T according to national standards
8923.1 processed oil pipe surfaces, solidify 3h at a temperature of 60 DEG C, then normal temperature cure 5d, obtain water injection well and are taken the photograph with resistance to 110
Family name's degree pyrographite alkene modified epoxy coating tubing.
To in embodiment 2 Coating Surface Roughness and thickness test, measure 10 times, coating is minimum with a thickness of 166 μ
m；Average thickness is 191 μm.
Leak source detection, the coating that average thickness is 191 microns are carried out to the coating in embodiment 2, breakdown voltage is 2,000
Volt.
To in embodiment 2 coating carry out high temperature resistance test, and using certain oil field the epoxy coating used as compare
Group, 148 DEG C of test temperature, pressure 35MPa, the NaOH solution that pH value is 13.Test result as shown in figure 4, from Fig. 4 (a) and
(b) as can be seen that epoxy coating blistering has occurred, cracks and flakes off phenomenon, and graphene modified epoxy coating of the invention without
Significant change.
Embodiment 3
The component and its weight percent of coating are as follows:
Propanepoxy resin: 38%
Novolac epoxy resin: 9.83%
Graphene: 0.07%
Pigments and fillers: 38%
Auxiliary agent: 0.1%
Organic solvent: 6%
Curing agent: 8%.
Wherein, 190~260m of specific surface area of graphene2/ g, 7~10 layers of the number of plies of graphene.
Pigments and fillers are the mixture of silicon carbide and zinc sulfate.
Auxiliary agent includes dispersing aid, coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent.
Curing agent is alicyclic modified amine.
Organic solvent is the mixture of dimethylbenzene and 1,4- butanediol diglycidyl ether.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1: pressing above-mentioned weight percent, graphene is added in organic solvent, surpass in the case where supersonic frequency is 6KHZ
Sound 60min disperses graphene uniform, obtains graphene dispersing solution；Wherein organic solvent is 1,4- butanediol 2-glycidyl
Ether.
Step 2: the mechanical stirring into prefabricated graphene dispersing solution is added in propanepoxy resin gross mass 4%
Ultrasound, obtains graphene epoxy resin mixed liquor after uniformly, and the number of plies of graphene is 1~4 layer after dispersion；Wherein, ultrasonic time
For 90min, supersonic frequency 4KHZ.
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining diphenol propane asphalt mixtures modified by epoxy resin
In rouge, stirring 10~12min to be uniformly mixed；Then auxiliary agent is added, is uniformly mixed；Novolac epoxy resin is added, mixing is equal
It is even；Finally pigments and fillers are added, obtain mixed liquor；Wherein, auxiliary agent is dispersing aid；
Step 4: the mixed liquor in step 3 is ground to fineness less than 20 microns, auxiliary agent is then added, stirs 3~5min,
Obtain coating component A；Wherein, auxiliary agent includes coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent；Dispersion in step 2 helps
The weight of the component of coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent this 5 kinds of auxiliary agent Zhan in agent and step 3 total coating
Measuring percentage is 0.1~0.3%.
Step 5: the coating component A in step 4 uniformly being mixed with curing agent, obtains water injection well with resistance to 110 degrees Celsius of height
Warm graphene modified epoxy resin mortar.
It is a kind of coated with the above-mentioned water injection well preparation side of the oil pipe of resistance to 110 celsius temperature graphene modified epoxy resin mortar
Method is added solvent for water injection well and is adjusted to 45~50cst with resistance to 110 celsius temperature graphene modified epoxy resin mortar, then
It sprays on pretreated oil pipe, solidifies 4h at 55 DEG C, the room temperature curing 7d after surface drying, the resistance to 110 degrees Celsius of height of water injection well
Warm graphene modified epoxy coating layer thickness is 163~191 μm, obtains being coated with water injection well with resistance to 110 celsius temperature graphene
Modified epoxy coating tubing.
Claims (10)
1. a kind of resistance to 110 celsius temperature graphene modified epoxy resin mortar of water injection well, which is characterized in that by mass percentage
Meter, including
Propanepoxy resin: 36~38%
Novolac epoxy resin: 8~10%
Graphene: 0.05~0.1%
Pigments and fillers: 38~40%
Auxiliary agent: 0.1~0.4%
Organic solvent: 4~6%
Curing agent: 8~9%.
2. a kind of water injection well according to claim 1 resistance to 110 celsius temperature graphene modified epoxy resin mortar, feature
It is, the specific surface area of graphene is 190~260m2/ g, 7~10 layers of the number of plies of graphene.
3. a kind of water injection well according to claim 1 resistance to 110 celsius temperature graphene modified epoxy resin mortar, feature
It is, pigments and fillers are one or more of carbon black, talcum powder, barium sulfate, micaceous iron oxide, silicon carbide, zinc sulfate.
4. a kind of water injection well according to claim 1 resistance to 110 celsius temperature graphene modified epoxy resin mortar, feature
It is, auxiliary agent includes dispersing aid, coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent.
5. a kind of water injection well according to claim 1 resistance to 110 celsius temperature graphene modified epoxy resin mortar, feature
It is, curing agent is alicyclic modified amine.
6. a kind of water injection well according to claim 1 resistance to 110 celsius temperature graphene modified epoxy resin mortar, feature
It is, organic solvent is one or more of dimethylbenzene, n-butanol, 1,4-butanediol diglycidyl ether.
7. a kind of resistance to 110 celsius temperature graphene modified epoxy of water injection well as described in any one of claim 1-6
The preparation method of coating, which comprises the following steps:
Step 1: graphene being added in organic solvent, ultrasound obtains graphene dispersing solution；
Step 2: the propanepoxy resin of propanepoxy resin gross mass 4% is added to graphene dispersing solution
In, after mechanical stirring is uniform, ultrasound obtains graphene epoxy resin mixed liquor, and the number of plies of graphene is 1~4 layer after dispersion；
Step 3: the graphene epoxy resin mixed liquor prepared in step 2 is added to remaining propanepoxy resin
In, it is uniformly mixed；Then auxiliary agent is added, is uniformly mixed；Novolac epoxy resin is added, is uniformly mixed；Finally pigments and fillers are added
Enter, obtains mixed liquor；Wherein, auxiliary agent is dispersing aid；
Step 4: the mixed liquor in step 3 being ground to fineness less than 20 microns, auxiliary agent is then added, stirs evenly, is applied
Expect component A；Wherein, auxiliary agent includes coupling agent, adhesive force auxiliary agent, defoaming agent and levelling agent；
Step 5: coating component A uniformly being mixed with curing agent, obtains the water injection well modified ring of resistance to 110 celsius temperature graphene
Oxygen coating.
8. one kind is coated with the modified ring of resistance to 110 celsius temperature graphene of water injection well described in any one of claim 1-6
The oil pipe of oxygen coating.
9. one kind is coated with the modified ring of resistance to 110 celsius temperature graphene of water injection well described in any one of claim 1-6
The preparation method of the oil pipe of oxygen coating, which is characterized in that solvent is added and changes the resistance to 110 celsius temperature graphene of water injection well
Property epoxy coating be adjusted to 45~50cst, then spray on pretreated oil pipe, low-temperature setting, room temperature is solid after surface drying
Change, obtains being coated with water injection well with resistance to 110 celsius temperature graphene modified epoxy coating tubing.
10. a kind of water injection well according to claim 9 oil of resistance to 110 celsius temperature graphene modified epoxy resin mortar
The preparation method of pipe, which is characterized in that low-temperature setting temperature be 50~60 DEG C, the time be 3~4h, the room temperature curing time be 5~
7d, the resistance to 110 celsius temperature graphene modified epoxy coating layer thickness of water injection well is 163~191 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377577.9A CN109608981A (en) | 2018-11-19 | 2018-11-19 | A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377577.9A CN109608981A (en) | 2018-11-19 | 2018-11-19 | A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method |
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| CN111500082A (en) * | 2020-04-29 | 2020-08-07 | 大庆油田有限责任公司 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
| CN111944390A (en) * | 2020-07-31 | 2020-11-17 | 中国石油天然气集团有限公司 | Modified phenolic epoxy coating and preparation method and application thereof |
| CN117019575A (en) * | 2023-08-18 | 2023-11-10 | 中微纳新能源科技(东莞)有限公司 | Preparation method and device of fastener with graphene-based anti-corrosion coating |
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Application publication date: 20190412 |