CN115636768A - Bionic solid particle and preparation method and application thereof - Google Patents
Bionic solid particle and preparation method and application thereof Download PDFInfo
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- CN115636768A CN115636768A CN202211345414.9A CN202211345414A CN115636768A CN 115636768 A CN115636768 A CN 115636768A CN 202211345414 A CN202211345414 A CN 202211345414A CN 115636768 A CN115636768 A CN 115636768A
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- 239000002245 particle Substances 0.000 title claims abstract description 107
- 239000007787 solid Substances 0.000 title claims abstract description 100
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000005553 drilling Methods 0.000 claims abstract description 66
- 239000012530 fluid Substances 0.000 claims abstract description 59
- 229960003638 dopamine Drugs 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007853 buffer solution Substances 0.000 claims abstract description 19
- 238000002791 soaking Methods 0.000 claims abstract description 17
- 239000003607 modifier Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims description 10
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 10
- 230000003592 biomimetic effect Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 claims description 10
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 10
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- HFJRKMMYBMWEAD-UHFFFAOYSA-N dodecanal Chemical compound CCCCCCCCCCCC=O HFJRKMMYBMWEAD-UHFFFAOYSA-N 0.000 claims description 8
- 239000002262 Schiff base Substances 0.000 claims description 7
- 150000004753 Schiff bases Chemical class 0.000 claims description 7
- -1 aldehyde compound Chemical class 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 239000000872 buffer Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- ORMHZBNNECIKOH-UHFFFAOYSA-N 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde Chemical compound CC(C)(O)CCCC1=CCC(C=O)CC1 ORMHZBNNECIKOH-UHFFFAOYSA-N 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 17
- 238000001914 filtration Methods 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001804 emulsifying effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 11
- 230000032683 aging Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 2
- 229940089454 lauryl aldehyde Drugs 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Abstract
The invention belongs to the technical field of treating agents for drilling fluid. The invention provides a bionic solid particle and a preparation method thereof, wherein the bionic solid particle is washed and dried in sequence to obtain a dry solid particle; soaking the dried solid particles in a dopamine buffer solution to obtain dopamine modified solid particles; and modifying the dopamine modified solid particles by using a modifier to obtain the bionic solid particles. The invention also provides application of the bionic solid particles. The bionic solid particles have multiple functions of reducing the filtration loss of a system, plugging micro-nano-scale pores, emulsifying oil and water and the like, are applied to different types of drilling fluid systems, realize the multifunctional application of a single treating agent, effectively solve the problem of complex preparation process of the drilling fluid system, improve the application effect of the treating agent for the drilling fluid and solve the problem of degradation failure of the treating agent in the drilling fluid system in a high-temperature environment.
Description
Technical Field
The invention relates to the technical field of treating agents for drilling fluids, in particular to bionic solid particles and a preparation method and application thereof.
Background
As blood for drilling engineering, the drilling fluid is of great importance in the whole drilling process, and the main reasons for the drilling fluid are that the drilling fluid has the functions of carrying rock debris, balancing formation pressure, cooling a drill bit and the like. In the process of drilling into the stratum, the annular drilling fluid can effectively carry the drill cuttings to the ground, and meanwhile, the pressure of the stratum is balanced to ensure safe and efficient drilling, so that the key is to prepare high-performance drilling fluid and maintain the stable performance of the drilling fluid. The drilling fluid commonly used in the drilling engineering at present is a system prepared by processing agents with different functions, such as a tackifier, an extracting agent, a filtrate reducer, a diluent, a plugging agent and the like, in order to meet the requirements of the drilling engineering, the types of the processing agents in the system are more, and in order to meet the requirements of use in a high-temperature and high-pressure environment, avoid the problems of deteriorated rheological property, increased filtrate loss and the like, the performance requirements of each processing agent in the system are higher in the use process.
Therefore, the bionic solid particles for the drilling fluid, which meet various requirements on the performance of the drilling fluid in the drilling process and simplify the preparation process, are obtained through research, and have important significance.
Disclosure of Invention
The invention aims to provide bionic solid particles and a preparation method and application thereof aiming at the defects of the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of bionic solid particles, which comprises the following steps:
1) Washing and drying the solid particles in sequence to obtain dry solid particles;
2) Soaking the dried solid particles in a dopamine buffer solution to obtain dopamine modified solid particles;
3) Modifying the dopamine modified solid particles by using a modifier to obtain the bionic solid particles.
Preferably, the solid particles in the step 1) have a particle size of 10nm to 50 μm; the solid particles are spherical silicon dioxide, sheet montmorillonite, rod-shaped attapulgite or wollastonite.
Preferably, the preparation method of the spherical silica comprises the following steps: mixing absolute ethyl alcohol, ethyl orthosilicate and ammonia water, and then reacting to obtain spherical silicon dioxide;
the volume ratio of the absolute ethyl alcohol to the tetraethoxysilane to the ammonia water is 2-4: 30:4 to 6;
the reaction temperature is 25-35 ℃, and the reaction time is 20-28 h.
Preferably, the reagent for washing in step 1) is a mixed solution of anhydrous ethanol and water, and the volume ratio of the anhydrous ethanol to the water is 1-3: 1; the washing times are 2-5 times; the drying temperature is 45-55 ℃, and the drying time is 20-28 h.
Preferably, the dopamine buffer in step 2) comprises a Tris-HCl buffer and dopamine hydrochloride; the pH value of the dopamine buffer solution is 8.0-8.5.
Preferably, in the step 2), the mass ratio of the Tris-HCl buffer solution to the dopamine hydrochloride is 1-2: 1 to 2; the soaking temperature is 18-22 ℃, and the soaking time is 10-14 h.
Preferably, the modifier in step 3) is an aldehyde compound or a ketone compound; the modification treatment adopts a Schiff base reaction method.
Preferably, the modifier in the step 3) is lauraldehyde, lyral, cyclopentanone or 2-heptanone.
The invention also provides the bionic solid particles prepared by the preparation method.
The invention also provides the application of the bionic solid particles in the drilling fluid, wherein the bionic solid particles are added into the drilling fluid, and the mass concentration of the bionic solid particles in the drilling fluid is 0.2-1%.
The beneficial effects of the invention include:
the invention takes the solid particles as the main raw material, uses the modifier to modify the surface of the solid particles, maintains the inherent performance of the solid particles and endows the solid particles with more excellent performance, thereby widening the application range of the solid particles. The preparation method provided by the invention is simple in steps, and the obtained bionic solid particle treating agent is excellent in performance and suitable for large-scale application. The bionic solid particles have multiple functions of reducing the system filtration loss, plugging micro-nano pore gaps, emulsifying oil and water and the like, and can be applied to different types of drilling fluid systems due to the special property of the modifier, so that the multifunctional application of a single treating agent is realized, the problem of complex preparation process of the drilling fluid system is effectively solved, the application effect of the treating agent for the drilling fluid is improved, and the problem of degradation failure of the treating agent in the drilling fluid system in a high-temperature environment is solved.
Detailed Description
The invention provides a preparation method of bionic solid particles, which comprises the following steps:
1) Washing and drying the solid particles in sequence to obtain dry solid particles;
2) Soaking the dried solid particles in a dopamine buffer solution to obtain dopamine modified solid particles;
3) And modifying the dopamine modified solid particles by using a modifier to obtain the bionic solid particles.
In the present invention, the particle size of the solid particles in step 1) is preferably 10nm to 50 μm, more preferably 100nm to 5 μm, and still more preferably 500nm to 2 μm; the solid particles are preferably spherical silica, a sheet-like montmorillonite, a rod-like attapulgite or wollastonite.
In the present invention, the preparation method of the spherical silica is preferably: mixing absolute ethyl alcohol, ethyl orthosilicate and ammonia water, and then reacting to obtain spherical silicon dioxide; more preferably, anhydrous ethanol and ethyl orthosilicate are mixed and then mixed with ammonia water.
In the invention, the volume ratio of the absolute ethyl alcohol to the tetraethoxysilane to the ammonia water is preferably 2-4: 30:4 to 6, more preferably 3:30:5; the mass concentration of the ammonia water is preferably 22 to 25 percent, and more preferably 23 to 24 percent; the reaction temperature is preferably 25 to 35 ℃, more preferably 28 to 32 ℃, and even more preferably 30 ℃; the reaction time is preferably 20 to 28 hours, more preferably 22 to 26 hours, and still more preferably 24 to 25 hours.
In the present invention, the washing reagent in step 1) is preferably a mixed solution of anhydrous ethanol and water, and the volume ratio of the anhydrous ethanol to the water is preferably 1 to 3:1, more preferably 2:1; the number of washing is preferably 2 to 5, more preferably 3 to 4.
In the invention, washing is used for removing impurities in solid particles; the washing process is preferably to centrifuge the solid particles in a mixed solution of absolute ethyl alcohol and water, or to ultrasonically disperse the solid particles in the mixed solution of absolute ethyl alcohol and water, and to centrifuge the solid particles after extracting the supernatant; the rotation speed of the centrifugation is preferably 10000-13000 rpm, and more preferably 11000-12000 rpm; the ultrasonic frequency of the ultrasonic dispersion is preferably 18 to 22kHz, more preferably 19 to 21kHz, and even more preferably 20kHz; the time for ultrasonic dispersion is preferably 0.5 to 2min, and more preferably 1 to 1.5min.
In the invention, the drying temperature in the step 1) is preferably 45-55 ℃, more preferably 47-52 ℃, and more preferably 49-50 ℃; the drying time is preferably 20 to 28 hours, more preferably 22 to 26 hours, and still more preferably 24 to 25 hours.
In the present invention, the dopamine buffer solution in step 2) preferably comprises a Tris-HCl buffer solution and dopamine hydrochloride; the pH of the dopamine buffer is preferably 8.0 to 8.5, more preferably 8.1 to 8.4, and even more preferably 8.2 to 8.3.
In step 2), the mass ratio of the Tris-HCl buffer solution to the dopamine hydrochloride is preferably 1-2: 1 to 2, more preferably 1:1; the soaking temperature is preferably 18-22 ℃, more preferably 19-21 ℃, and more preferably 20 ℃; the soaking time is preferably 10 to 14 hours, more preferably 11 to 13 hours, and still more preferably 12 hours.
In the invention, dopamine is used as an adsorbent to coat solid particles; the soaking is preferably carried out under the stirring condition, and the dopamine modified solid particles are obtained by carrying out centrifugal treatment after the soaking is finished.
In the invention, the modifier in the step 3) is preferably an aldehyde compound or a ketone compound; the modification treatment is preferably performed by a Schiff base reaction method.
In the present invention, the modifier of step 3) is preferably lauraldehyde, lyral aldehyde, cyclopentanone or 2-heptanone.
In the invention, the time of the modification treatment in the step 3) is preferably 5 to 7 hours, and more preferably 6 hours; the mass ratio of the modifier to the dopamine modified solid particles is preferably 1-1.5: 1, more preferably 1.2 to 1.3:1.
the invention also provides the bionic solid particles prepared by the preparation method.
The invention also provides the application of the bionic solid particles in the drilling fluid, wherein the bionic solid particles are added into the drilling fluid, and the mass concentration of the bionic solid particles in the drilling fluid is 0.2-1%.
In the invention, the mass concentration of the bionic solid particles in the drilling fluid is preferably 0.4-0.8%, and more preferably 0.5-0.7%; the bionic solid particles are used as a treating agent in the drilling fluid.
The invention also provides an application of the dopamine modified solid particles in the step 2) in the drilling fluid, wherein the dopamine modified solid particles are added into the drilling fluid, and the mass concentration of the dopamine modified solid particles in the drilling fluid is preferably 0.2-1%, more preferably 0.4-0.8%, and even more preferably 0.5-0.7%.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Mixing absolute ethyl alcohol and tetraethoxysilane, performing magnetic stirring, slowly dripping ammonia water (the mass concentration is 25%) into the mixed solution after uniformly stirring, and uniformly stirring, wherein the volume ratio of the absolute ethyl alcohol to the tetraethoxysilane to the ammonia water is 3:30:5, reacting for 24 hours at 30 ℃ to obtain spherical silicon dioxide with the particle size of 50 nm.
The spherical silica was ultrasonically dispersed in a mixed solution of anhydrous ethanol and water (the volume ratio of the anhydrous ethanol to the water was 2.
Soaking the dried solid particles in a dopamine buffer solution (containing Tris-HCl buffer solution and dopamine hydrochloride in a volume ratio of 1.
Lauryl aldehyde is adopted to modify the dopamine modified solid particles by a Schiff base reaction method, and the mass ratio of the lauryl aldehyde to the dopamine modified solid particles is 1.2:1, the time of modification treatment is 6h, and the bionic solid particles are obtained.
Example 2
Mixing absolute ethyl alcohol and tetraethoxysilane, carrying out magnetic stirring, slowly dripping ammonia water (the mass concentration is 24%) into the mixed solution after uniformly stirring, and uniformly stirring, wherein the volume ratio of the absolute ethyl alcohol to the tetraethoxysilane to the ammonia water is 2.5:30:5.5, reacting for 26h at 27 ℃ to obtain spherical silicon dioxide with the particle size of 2 mu m.
The spherical silica was centrifugally washed 4 times at 12500rpm in a mixed solution of anhydrous ethanol and water (the volume ratio of the anhydrous ethanol to the water was 2.5).
Soaking the dried solid particles in a dopamine buffer solution (containing Tris-HCl buffer solution and dopamine hydrochloride in a volume ratio of 1.
The method is characterized in that the dopamine modified solid particles are modified by using the lyral through a Schiff base reaction method, and the mass ratio of the lyral to the dopamine modified solid particles is 1.4: and 1, modifying for 5.5 hours to obtain the bionic solid particles.
Example 3
The sheet-like montmorillonite having a particle size of 500nm was centrifugally washed 3 times at a rotation speed of 11000rpm in a mixed solution of absolute ethanol and water (the volume ratio of absolute ethanol to water was 1.5).
Soaking the dried solid particles in a dopamine buffer solution (containing Tris-HCl buffer solution and dopamine hydrochloride in a volume ratio of 1.
Performing modification treatment on the dopamine modified solid particles by adopting cyclopentanone through a Schiff base reaction method, wherein the mass ratio of the cyclopentanone to the dopamine modified solid particles is 1:1, the time of modification treatment is 6 hours, and the bionic solid particles are obtained.
Example 4
Wollastonite having a particle size of 1 μm was ultrasonically dispersed in a mixed solution of absolute ethanol and water (the volume ratio of absolute ethanol to water is 2: 1) at a frequency of 19kHz for 1.5min, and after extracting the supernatant, the resultant was centrifugally washed 3 times at a rotation speed of 11500rpm, and then dried at 48 ℃ for 25 hours to obtain dry solid particles.
Soaking the dried solid particles in a dopamine buffer solution (containing Tris-HCl buffer solution and dopamine hydrochloride in a volume ratio of 1: 1.5) with the pH value of 8.3 at the temperature of 20 ℃ for 12h, and centrifuging at the rotating speed of 11500rpm after soaking to obtain the dopamine modified solid particles.
Modifying the dopamine modified solid particles by 2-heptanone through a Schiff base reaction method, wherein the mass ratio of the 2-heptanone to the dopamine modified solid particles is 1.2:1, the time of modification treatment is 6.5h, and the bionic solid particles are obtained.
The biomimetic type solid particles of example 1 were added to a water-based or oil-based drilling fluid (mass concentration of the biomimetic type solid particles in the drilling fluid is 0.6%) as experimental example 1, the biomimetic type solid particles of example 2 were added to a water-based or oil-based drilling fluid (mass concentration of the biomimetic type solid particles in the drilling fluid is 0.3%) as experimental example 2, the biomimetic type solid particles of example 3 were added to a water-based or oil-based drilling fluid (mass concentration of the biomimetic type solid particles in the drilling fluid is 0.8%) as experimental example 3, the biomimetic type solid particles of example 4 were added to a water-based or oil-based drilling fluid (mass concentration of the biomimetic type solid particles in the drilling fluid is 1.0%) as experimental example 4, and the water-based or oil-based drilling fluid without the biomimetic type solid particles was used as a comparative example.
The density of the water-based drilling fluid of Experimental example 1 was 1.4g/cm 3 The filtration loss of the water-based drilling fluid system after aging at 120 ℃ is 5mL, the stability of the oil-based drilling fluid is improved, and the demulsification voltage value is 811V.
The density of the water-based drilling fluid of Experimental example 2 was 1.39g/cm 3 Water, waterThe filtration loss of the base drilling fluid system after aging at 120 ℃ is 5.8mL, the stability of the oil-based drilling fluid is improved, and the demulsification voltage value is 805V.
The density of the water-based drilling fluid of Experimental example 3 was 1.4g/cm 3 The filtration loss of the water-based drilling fluid system after aging at 120 ℃ is 4.8mL, the stability of the oil-based drilling fluid is improved, and the demulsification voltage value is 815V.
The density of the water-based drilling fluid of Experimental example 4 was 1.41g/cm 3 The filtration loss of the water-based drilling fluid system after aging at 120 ℃ is 5.1mL, the stability of the oil-based drilling fluid is improved, and the demulsification voltage value is 812V.
The water-based drilling fluid system of the comparative example has the filtration loss of more than 8.6mL after aging at 120 ℃, and the demulsification voltage value of the oil-based drilling fluid is lower than 562V.
The embodiment and the comparative example show that the bionic solid particles have multiple functions of reducing the system filtration loss, improving the demulsification voltage value, blocking micro-nano pore gaps and the like, can be applied to different types of drilling fluid systems, realize the multifunctional application of the treating agent, and effectively solve the problems of complex preparation process of the drilling fluid system and degradation failure of the treating agent in the drilling fluid system under a high-temperature environment.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (10)
1. A preparation method of bionic solid particles is characterized by comprising the following steps:
1) Washing and drying the solid particles in sequence to obtain dry solid particles;
2) Soaking the dried solid particles in a dopamine buffer solution to obtain dopamine modified solid particles;
3) Modifying the dopamine modified solid particles by using a modifier to obtain the bionic solid particles.
2. The method according to claim 1, wherein the solid particles of step 1) have a particle size of 10nm to 50 μm; the solid particles are spherical silicon dioxide, sheet montmorillonite, rod-shaped attapulgite or wollastonite.
3. The method according to claim 2, wherein the method for preparing the spherical silica comprises: mixing absolute ethyl alcohol, ethyl orthosilicate and ammonia water, and then reacting to obtain spherical silicon dioxide;
the volume ratio of the absolute ethyl alcohol to the tetraethoxysilane to the ammonia water is 2-4: 30:4 to 6;
the reaction temperature is 25-35 ℃, and the reaction time is 20-28 h.
4. The preparation method according to claim 2 or 3, wherein the washing reagent in step 1) is a mixed solution of anhydrous ethanol and water, and the volume ratio of the anhydrous ethanol to the water is 1-3: 1; the washing times are 2-5; the drying temperature is 45-55 ℃, and the drying time is 20-28 h.
5. The method according to claim 4, wherein the dopamine buffer of step 2) comprises Tris-HCl buffer and dopamine hydrochloride; the pH value of the dopamine buffer solution is 8.0-8.5.
6. The preparation method according to claim 5, wherein in the step 2), the mass ratio of the Tris-HCl buffer solution to the dopamine hydrochloride is 1-2: 1 to 2; the soaking temperature is 18-22 ℃, and the soaking time is 10-14 h.
7. The method according to claim 5 or 6, wherein the modifier in step 3) is an aldehyde compound or a ketone compound; the modification treatment adopts a Schiff base reaction method.
8. The method of claim 7, wherein the modifier of step 3) is lauraldehyde, lyral, cyclopentanone, or 2-heptanone.
9. The biomimetic solid particles prepared by the preparation method of any one of claims 1 to 8.
10. The application of the bionic solid particles in the drilling fluid, which is characterized in that the bionic solid particles are added into the drilling fluid, and the mass concentration of the bionic solid particles in the drilling fluid is 0.2-1%.
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