CN110408370A - A kind of preparation method and application of drilling fluid modified manometer silicon dioxide dispersion liquid - Google Patents
A kind of preparation method and application of drilling fluid modified manometer silicon dioxide dispersion liquid Download PDFInfo
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- CN110408370A CN110408370A CN201910896353.7A CN201910896353A CN110408370A CN 110408370 A CN110408370 A CN 110408370A CN 201910896353 A CN201910896353 A CN 201910896353A CN 110408370 A CN110408370 A CN 110408370A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 85
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002253 acid Substances 0.000 claims abstract description 38
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004094 surface-active agent Substances 0.000 claims abstract description 20
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010792 warming Methods 0.000 claims abstract description 8
- 235000019441 ethanol Nutrition 0.000 claims description 41
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- IEQAICDLOKRSRL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO IEQAICDLOKRSRL-UHFFFAOYSA-N 0.000 claims description 7
- -1 silicane alkane Chemical class 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 claims 1
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 1
- 235000011152 sodium sulphate Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 abstract description 14
- 239000002689 soil Substances 0.000 abstract description 14
- 229920003023 plastic Polymers 0.000 abstract description 7
- 239000007790 solid phase Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 14
- 239000002002 slurry Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- OOCCDEMITAIZTP-QPJJXVBHSA-N (E)-cinnamyl alcohol Chemical compound OC\C=C\C1=CC=CC=C1 OOCCDEMITAIZTP-QPJJXVBHSA-N 0.000 description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical group OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- OOCCDEMITAIZTP-UHFFFAOYSA-N allylic benzylic alcohol Natural products OCC=CC1=CC=CC=C1 OOCCDEMITAIZTP-UHFFFAOYSA-N 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- JKGITWJSGDFJKO-UHFFFAOYSA-N ethoxy(trihydroxy)silane Chemical class CCO[Si](O)(O)O JKGITWJSGDFJKO-UHFFFAOYSA-N 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 229910052601 baryte Inorganic materials 0.000 description 2
- 239000010428 baryte Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C09K2208/10—Nanoparticle-containing well treatment fluids
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The present invention provides a kind of drilling fluid preparation method and application of modified manometer silicon dioxide dispersion liquid, belong to oil field drilling fluids technical field.The preparation method of the improved silica includes: to mix ethyl orthosilicate and low carbon alcohol solution；Obtained mixed liquor is warming up to 30-80 DEG C, is reacted with acid-mixed conjunction；First reaction solution is carried out dropwise addition acid twice to react；Obtained third reaction solution is mixed with surfactant solution, silane coupling agent and is reacted, modified manometer silicon dioxide dispersion liquid is obtained.The modified manometer silicon dioxide dispersion liquid being prepared using method provided by the invention, regular shape, granularity are matched with shale pore-size.There is preferable dispersibility simultaneously, the plastic viscosity and yield value of soil paste can be effectively reduced, improve the rheological characteristic and filter loss of high solid phase drilling fluid, to make it possible that high density drilling fluid takes into account rheological characteristic and leak-off wave making machine.
Description
Technical field
The invention belongs to oil field drilling fluids technical fields, and in particular to a kind of drilling fluid is dispersed with modified manometer silicon dioxide
The preparation method and application of liquid.
Background technique
With the exploitation of unconventional petroleum resources, the Wellbore Stability of shale oil and gas reservoir horizontal well becomes current research
One of hot spot.The distribution of pores minimum of shale reservoir reaches nanometer scale, and foreign study shows hard brittle shale sample master
Body aperture is within the scope of 550 nm, and nanoaperture is maximum to the contribution of permeability.Plugging material is often used in drilling fluid field at present
Size all in micron order, the hole of nano-scale cannot be blocked effectively.Only nanoparticle can be from inside to outer
Portion gradually blocks hole, reduces permeability, reduces the water of invaded formation, improves borehole wall stability.Nano silica is added
The permeability of shale formation can be effectively reduced afterwards, hinder slow pressure transmitting.Therefore, nano silica is domestic and international shale pneumatic drill
One of the hot spot of well liquid area research.
Current commercialized solid nano silica is easy the problems such as reuniting there are expensive, bad dispersibility, and compares
More fluffy, when charging, is easy to drift；And dispersing agent would generally be added in order to improve stability in nano silicon dioxide dispersion
And tackifier, property of drilling fluid is influenced, and be also easy to reunite after encountering salt.
Summary of the invention
In view of this, the present invention provides a kind of preparation method of drilling fluid modified manometer silicon dioxide dispersion liquid and answering
With making the modified manometer silicon dioxide dispersion liquid being prepared, granularity is matched with shale pore-size, is conducive to mud shale
Layer is effectively blocked.The modified manometer silicon dioxide dispersion liquid being prepared simultaneously has preferable dispersibility, can be effective
Ground reduces the plastic viscosity and yield value of soil paste, improves the rheological characteristic and filter loss of high solid phase drilling fluid, so that high density be made to bore
Well liquid is taken into account rheological characteristic and is possibly realized with leak-off wave making machine.
To solve the above-mentioned problems, the present invention provides following technical schemes:
The present invention provides a kind of preparation methods of modified manometer silicon dioxide dispersion liquid, include the following steps:
1) ethyl orthosilicate and low carbon alcohol solution are mixed with the mass volume ratio of 50-120 g:100-200 mL, is mixed
Close liquid；
The mass ratio of low-carbon alcohols and water is 1.2-3:1 in the low carbon alcohol solution；
2) mixed liquor of the step 1) is warming up to 30-80 DEG C, is mixed with the acid solution that mass fraction is 10%-30%, in 30-
80 DEG C of reaction 5-20 min, obtain the first reaction solution；
The volume ratio of the acid solution and low carbon alcohol solution is 20-50 mL:100-200 mL；
3) it carries out that the acid solution that mass fraction is 10%-30% is added dropwise for the first time in the first reaction solution of the step 2, is added dropwise
After the completion in 30-80 DEG C of reaction 3-6 h, the second reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
4) second is carried out in the second reaction solution of the step 3), the acid solution that mass fraction is 10%-30% is added dropwise, be added dropwise
After the completion in 30-80 DEG C of reaction 2-4 h, third reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
5) the third reaction solution of the step 4) is mixed with surfactant solution, adjusts pH value to 7-11, drop with aqueous slkali
Add silane coupling agent, 6-12 h is stirred at room temperature after being added dropwise to complete, obtains modified manometer silicon dioxide dispersion liquid；
The mass volume ratio of surfactant and water is 0.2-1 g:15 mL in the surfactant solution；
The mass ratio of the third reaction solution and surfactant is 10 g:0.2-1 g；
The mass ratio of the silane coupling agent and third reaction solution is 0.4-2.0 g:10 g.
Preferably, low-carbon alcohols are in ethyl alcohol, ethylene glycol, propylene glycol and glycerine in low carbon alcohol solution in the step 1)
One or more.
Preferably, the step 2-4) in acid solution be one or more of acetic acid, sulfuric acid and hydrochloric acid solution；It is described
Aqueous slkali is sodium hydroxide solution in step 5).
Preferably, the step 3) and 4) in be added dropwise speed be 0.11-0.30 mL/min.
Preferably, surfactant is lauryl sodium sulfate, Brij30 and tween in the step 5)
One or more of 20.
Preferably, silane coupling agent is gamma-aminopropyl-triethoxy-silane, vinyl triethoxyl silicon in the step 5)
Alkane, γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, vinyltrimethoxysilane and (the beta-methoxy ethoxy of vinyl three
One or more of base) silane.
Preferably, the speed stirred in the step 5) is 1000-3000 r/min.
The present invention provides a kind of modified manometer silicon dioxide dispersion liquids that above scheme the method is prepared.
Preferably, the partial size of the modified manometer silicon dioxide dispersion liquid is 10-100 nm.
The present invention also provides modified manometer silicon dioxide dispersion liquid answering in drilling fluid described in a kind of above scheme
With.
The present invention provides a kind of modified manometer silicon dioxide dispersion liquids and its preparation method and application.It is provided by the invention
Method and process is simple to operation, and obtained modified manometer silicon dioxide dispersion liquid, regular shape, granularity and shale pore-size
Matching.Embodiment the result shows that: the modified manometer silicon dioxide dispersion liquid shape that the present invention is prepared be comparison rule circle
Shape, granularity match within the scope of 10-100 nm with shale pore-size, are conducive to effectively block mud shale stratum.
Meanwhile the modified manometer silicon dioxide dispersion liquid that the present invention is prepared has preferable dispersibility, in drilling fluid
In be uniformly dispersed, very good solution nanometer silicon dioxide particle is difficult to disperse, and easy to reunite, particle is light, and scene charging difficulty etc. is asked
Topic, plays good effect.
Meanwhile the nano silica that is prepared of the present invention can be effectively reduced the plastic viscosity of soil paste and dynamic cut
Power.The rheological characteristic and filter loss for improving high solid phase drilling fluid, so that high density drilling fluid be made to take into account rheological characteristic and leak-off wave making machine
It is possibly realized, solves the problems, such as that high density drilling fluid rheological characteristic is difficult to take into account with leak-off wave making machine for a long time.
Detailed description of the invention
Fig. 1 is the particle size results figure that modified manometer silicon dioxide dispersion liquid is tested using laser particle analyzer；
Fig. 2 is the shape knot that modified manometer silicon dioxide dispersion liquid is observed using S-480 type cold field emission scanning electron microscope
Fruit figure.
Specific embodiment
The present invention provides a kind of preparation methods of modified manometer silicon dioxide dispersion liquid, include the following steps:
1) ethyl orthosilicate and low carbon alcohol solution are mixed with the mass volume ratio of 50-120 g:100-200 mL, is mixed
Close liquid；
The mass ratio of low-carbon alcohols and water is 1.2-3:1 in the low carbon alcohol solution；
2) mixed liquor of the step 1) is warming up to 30-80 DEG C, is mixed with the acid solution that mass fraction is 10%-30%, in 30-
80 DEG C of reaction 5-20 min, obtain the first reaction solution；
The volume ratio of the acid solution and low carbon alcohol solution is 20-50 mL:100-200 mL；
3) it carries out that the acid solution that mass fraction is 10%-30% is added dropwise for the first time in the first reaction solution of the step 2, is added dropwise
After the completion in 30-80 DEG C of reaction 3-6 h, the second reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
4) second is carried out in the second reaction solution of the step 3), the acid solution that mass fraction is 10%-30% is added dropwise, be added dropwise
After the completion in 30-80 DEG C of reaction 2-4 h, third reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
5) the third reaction solution of the step 4) is mixed with surfactant solution, adjusts pH value to 7-11, drop with aqueous slkali
Add silane coupling agent, 6-12 h is stirred at room temperature after being added dropwise to complete, obtains modified manometer silicon dioxide dispersion liquid；
The mass volume ratio of surfactant and water is 0.2-1 g:15 mL in the surfactant solution；
The mass ratio of the third reaction solution and surfactant is 10 g:0.2-1 g；
The mass ratio of the silane coupling agent and third reaction solution is 0.4-2.0 g:10 g.
The present invention mixes ethyl orthosilicate and low carbon alcohol solution with the mass volume ratio of 50-120 g:100-200 mL
It closes, obtains mixed liquor.
In the present invention, the mass volume ratio of the ethyl orthosilicate and low carbon alcohol solution is 50-120 g:100-200
ML, preferably 60-100 g:120-180 mL, more preferably 80 g:140mL.In the present invention, in the low carbon alcohol solution
The mass ratio of low-carbon alcohol and water is 1.2-3:1, preferably 2:1.In the present invention, low-carbon alcohols are preferred in the low carbon alcohol solution
For one or more of ethyl alcohol, ethylene glycol, propylene glycol and glycerine, more preferably ethylene glycol.The present invention is to the positive silicic acid
The source of ethyl ester and low-carbon alcohols is not particularly limited, using this field conventional commercial product.In the present invention, low-carbon is prepared
Alcohol solution is preferably deionized water with water.
After obtaining mixed liquor, the mixed liquor is warming up to 30-80 DEG C by the present invention, the acid for being 10%-30% with mass fraction
Solution mixing, in 30-80 DEG C of reaction 5-20 min, obtains the first reaction solution.
In the present invention, the volume ratio of the acid solution and low carbon alcohol solution is 20-50 mL:100-200 mL, preferably
For 30-45 mL:120-180 mL, more preferably 40 mL:160 mL.In the present invention, the acid solution is preferably quality point
The acid solution that number is 20%.In the present invention, the acid solution is preferably one or more of acetic acid, sulfuric acid and hydrochloric acid solution,
More preferably hydrochloric acid solution.In the present invention, the time of the reaction is 5-20 min, preferably 15 min；The reaction
Temperature is 30-80 DEG C, preferably 60 DEG C.
After obtaining the first reaction solution, the present invention carries out that mass fraction is added dropwise for the first time in first reaction solution to be 10%-
30% acid solution obtains the second reaction solution in 30-80 DEG C of reaction 3-6 h after being added dropwise to complete.
In the present invention, the volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL, preferably
For 30-50 mL:120-160 mL, more preferably 40 mL:140 mL.The acid solution is preferably that acetic acid, sulfuric acid and hydrochloric acid are molten
One or more of liquid, more preferably hydrochloric acid solution.In the present invention, it is 20% that the acid solution, which is preferably mass fraction,
Acid solution.In the present invention, the speed of the dropwise addition is preferably 0.11-0.30mL/min, more preferably 0.20 mL/min.In
In the present invention, the time of the reaction is 3-6 h, preferably 4 h；The temperature of the reaction is 30-80 DEG C, preferably 60 DEG C.
After obtaining the second reaction solution, the present invention carries out second and mass fraction is added dropwise to be 10%- in second reaction solution
30% acid solution obtains third reaction solution in 30-80 DEG C of reaction 2-4 h after being added dropwise to complete.
In the present invention, the volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL, preferably
For 25-40 mL:120-180 mL, more preferably 30 mL:160 mL.In the present invention, the acid solution is preferably acetic acid, sulphur
One or more of acid and hydrochloric acid solution, more preferably hydrochloric acid solution；In the present invention, the concentration of the acid solution is preferably
20%.In the present invention, the speed of the dropwise addition is preferably 0.11-0.30 mL/min, more preferably 0.20 mL/min.At this
In invention, the time of the reaction is 2-4 h, preferably 3 h；The temperature of the reaction is 30-80 DEG C, preferably 60 DEG C.
In the present invention, it carries out preferably constant pressure funnel being used to be added dropwise when acid solution being added dropwise for the first time, for the second time.
The present invention is not particularly limited the source of the acid solution and constant pressure funnel, is using this field conventional commercial product
It can.
After obtaining third reaction solution, the present invention mixes the third reaction solution with surfactant solution, uses aqueous slkali
PH value is adjusted to 7-11, silane coupling agent is added dropwise, 6-12 h is stirred at room temperature after being added dropwise to complete, obtains modified nano-silica
Silicon dispersion liquid.
In the present invention, the mass volume ratio of surfactant and water is 0.2-1 g:15 in the surfactant solution
mL；Preferably 0.6 g:15 mL.In the present invention, the surfactant is preferably lauryl sodium sulfate, the polyoxyethylene moon
One or more of cinnamic alcohol ether and polysorbas20, more preferably Brij30.In the present invention, the third reaction
The mass ratio of liquid and surfactant is 10 g:0.2-1 g；Preferably 10 g:0.4 g.In the present invention, the adjusting pH value
It is preferably the sodium hydroxide solution that mass fraction is 5-20% with aqueous slkali.In the present invention, preferably in magnetic when the adjusting pH value
It is carried out under conditions of power stirring.In the present invention, the mass ratio of the silane coupling agent and third reaction solution is 0.4-2.0 g:
10 g.In the present invention, the silane coupling agent be preferably gamma-aminopropyl-triethoxy-silane, vinyltriethoxysilane,
γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, vinyltrimethoxysilane and vinyl three (beta-methoxy ethyoxyl)
One or more of silane, more preferably gamma-aminopropyl-triethoxy-silane.In the present invention, the speed of the dropwise addition is excellent
It is selected as 0.002-0.003 mL/min, more preferably 0.0025 mL/min.
In the present invention, the time of the stirring is 6-12 h, preferably 8 h；The speed of the stirring is preferably 1000-
3000r/min, more preferably 2500 r/min.
In the present invention, by controlling the additional amount and speed of raw material, the control to granularity may be implemented, by the way that silicon is added dropwise
Alkane coupling agent increases the surface charge of particle, so that particle surface is formed clad generation space after adding nonionic surfactant
Steric hindrance is conducive to the stability for improving dispersion, so that the modified manometer silicon dioxide dispersion liquid shape being prepared be made to advise
Then, granularity is matched with shale pore-size, and good dispersion.
The present invention provides a kind of modified manometer silicon dioxide dispersion liquids that above scheme the method is prepared.At this
In invention, the partial size of the modified manometer silicon dioxide dispersion liquid is preferably 10-100 nm.
The present invention provides application of the modified manometer silicon dioxide dispersion liquid in drilling fluid described in a kind of above scheme.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.It is aobvious
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1
It is added 50 g ethyl orthosilicates (TEOS) in 500 mL three-necked flasks, 200 mL ethanol waters is added and (ethyl alcohol and go
The mass ratio of ionized water is 2:1), it is uniformly mixing to obtain mixed liquor.Obtained mixed liquor is warming up to 60 DEG C, 20 mL matter are added
The hydrochloric acid solution that amount score is 20% obtains the first reaction solution in 60 DEG C of 20 min of reaction.It is being obtained using constant pressure funnel
The first reaction solution in the hydrochloric acid solution that 20 mL mass fractions are 10% is added dropwise with the speed of 0.15 mL/min, after being added dropwise to complete
In 60 DEG C of 6 h of reaction, the second reaction solution is obtained.Using constant pressure funnel with the speed of 0.15 mL/min in the second reaction solution
The hydrochloric acid solution that 20 mL mass fractions are 20% is added dropwise in degree, in 60 DEG C of 3 h of reaction after being added dropwise to complete, obtains third reaction solution (the
Three reaction solutions are light blue transparency liquid).
0.2 g Brij30 is weighed in 100 mL conical flasks, is dissolved with 15 g water, obtains the polyoxyethylene moon
Cinnamic alcohol ethereal solution.10 g third reaction solutions are added in the Brij30 solution being prepared, under magnetic stirring
After lye adjusting pH value to 9,0.4 g gamma-aminopropyl-triethoxy-silane is added dropwise with the speed of 0.0025 mL/min, in room
8 h are stirred with the revolving speed of 3000 r/min under temperature, modified manometer silicon dioxide dispersion liquid is made.
Embodiment 2
80 g ethyl orthosilicates (TEOS) are added in 500 mL three-necked flasks, 100 mL ethanol water (dehydrated alcohols are added
Mass ratio with deionized water is 2:1), it is uniformly mixing to obtain mixed liquor.Obtained mixed liquor is warming up to 80 DEG C, is added 20
The sulfuric acid that mL mass fraction is 30% obtains the first reaction solution in 80 DEG C of 15 min of reaction.It is being obtained using constant pressure funnel
The first reaction solution in the sulfuric acid that 30 mL mass fractions are 30% is added dropwise with the speed of 0.20 mL/min, 80 after being added dropwise to complete
DEG C reaction 4 h, obtain the second reaction solution.It is dripped using constant pressure funnel in the second reaction solution with the speed of 0.20 mL/min
Adding 30 mL mass fractions is that 20% sulfuric acid obtains third reaction solution (third reaction solution in 80 DEG C of 2 h of reaction after being added dropwise to complete
For light blue transparency liquid).
0.4 g Brij30 is weighed in 100 mL conical flasks, is dissolved with 15 g water, obtains the polyoxyethylene moon
Cinnamic alcohol ethereal solution.10 g third reaction solutions are added in the Brij30 solution being prepared, under magnetic stirring
After lye adjusting pH value to 10,0.4 g vinyltriethoxysilane is added dropwise with the speed of 0.003 mL/min, at room temperature
12 h are stirred with the revolving speed of 3000 r/min, modified manometer silicon dioxide dispersion liquid is made.
Embodiment 3
100 g ethyl orthosilicates (TEOS) are added in 500 mL three-necked flasks, 150 mL ethanol water (dehydrated alcohols are added
Mass ratio with deionized water is 2:1), it is uniformly mixing to obtain mixed liquor.Obtained mixed liquor is warming up to 40 DEG C, is added 30
The hydrochloric acid that mL mass fraction is 20% obtains the first reaction solution in 40 DEG C of 5 min of reaction.It is being obtained using constant pressure funnel
The hydrochloric acid that 20 mL mass fractions are 20% is added dropwise with the speed of 0.25 mL/min in first reaction solution, at 40 DEG C after being added dropwise to complete
4 h are reacted, the second reaction solution is obtained.It is added dropwise using constant pressure funnel in the second reaction solution with the speed of 0.25 mL/min
The hydrochloric acid that 40 mL mass fractions are 30%, in 40 DEG C of 4 h of reaction after being added dropwise to complete, obtaining third reaction solution, (third reaction solution is
Light blue transparency liquid).
0.6 g lauryl sodium sulfate is weighed in 100 mL conical flasks, is dissolved with 15 g water, obtains dodecyl sulphate
Sodium solution.10 g third reaction solutions are added in the sodium dodecyl sulfate solution being prepared, use lye under magnetic stirring
PH value is adjusted to after 8,0.4 g gamma-aminopropyl-triethoxy-silane is added dropwise with the speed of 0.002 mL/min, at room temperature with
The revolving speed of 3000 r/min stirs 10 h, and modified manometer silicon dioxide dispersion liquid is made.
Embodiment 4
The modified manometer silicon dioxide dispersion liquid performance that embodiment 1 is prepared is evaluated
1. grain size analysis
Use the granularity of laser particle analyzer (horiba lb-550 type) test modified manometer silicon dioxide dispersion liquid, concrete outcome
As shown in Figure 1.
As seen from Figure 1, the particle size range for the modified manometer silicon dioxide dispersion liquid that the present invention is prepared is about
10-100 nm, median particle size D50 are 40.0 nm, the results showed that the modified manometer silicon dioxide dispersion that the present invention is prepared
Liquid is matched with shale pore-size, is conducive to effectively block mud shale stratum.
Using the shape of S-480 type cold field emission scanning electron microscope observation modified manometer silicon dioxide dispersion liquid, tool
Body result is as shown in Figure 2.
As seen from Figure 2, the modified manometer silicon dioxide dispersion liquid that the present invention is prepared is shape comparison rule
It is spherical.
2. influence of the modified manometer silicon dioxide dispersion liquid to 8% live soil paste
The preparation of 8% live soil paste: 350 mL distilled water are measured, 28 g calcium-base bentonites, 2 g sodium carbonate, with 11000 r/ are added
The revolving speed of min stirs 20 min, places conserve 24 h in closed container as base slurry at room temperature.Based on mass volume ratio, in base
5% modified manometer silicon dioxide dispersion liquid is added in slurry, 20 min are stirred with the revolving speed of 11000 r/min, obtains sample-adding slurry.
After base being starched and being loaded slurry respectively in roller furnace with 150 DEG C of 16 h of aging, become with ZNN D6 type six-speed rotational viscometer flow measurement
Property, concrete outcome is as shown in table 1.
Influence of the 1 modified manometer silicon dioxide dispersion liquid of table to low-density slurry rheological characteristic
Note: AV- apparent viscosity；PV- plastic viscosity；YP- yield value.
As can be seen from Table 1,5% modified manometer silicon dioxide dispersion liquid is added in soil paste, plastic viscosity reduces by 3
MPas, yield value reduce by 0.51 mPas.The results showed that the nano silica that the present invention is prepared can have
Effect ground reduces the plastic viscosity and yield value of soil paste.
3. modified manometer silicon dioxide dispersion liquid to high solid phase aggravate slurry influence and with commercialization nano silica
Comparison
One technological difficulties of high density drilling fluid are making overall plans for rheological characteristic and leak-off wave making machine, this is because barite
Particle is thicker, if not sufficient soil particle filling, filter loss are difficult to control；However a large amount of soil particle will lead to rheological characteristic
Deteriorate, when especially high temperature reunion occurs, it is possible to drilling fluid be caused to lose flowability.According to modified Nano two in above-mentioned experiment
The characteristic of silica dispersion liquid tests the influence that modified manometer silicon dioxide dispersion liquid aggravates slurry to high solid phase.Test method
Are as follows: sodium soil (Bohai Sea bores the purchase producer of sodium soil as Bohai Sea probing) is bored using the drilling fluid Bohai Sea of standard and prepares 8% soil paste, and is used
High-quality barite (the gcm of ρ=4.2-3) it is weighed out to 1.5 gcm-3.Commercialized nano oxygen is separately added into above-mentioned base slurry
SiClx dispersion liquid (C-n-SiO2) and modified manometer silicon dioxide dispersion liquid, mobility is relatively good at room temperature, 150 DEG C of high temperature
After aging, rheological characteristic is tested, concrete outcome is as shown in table 2.
2 C-n-SiO of table2The influence of slurry is aggravated to high solid phase with modified manometer silicon dioxide dispersion liquid
Note: AV- apparent viscosity；PV- plastic viscosity；YP- yield value.
As can be seen from Table 2, C-n-SiO2Addition increase viscosity and shear force, it may be possible to due to unmodified nanometer two
Silica active group is more, and dispersion unevenly causes particle larger, and plays the role of crosslinking after native phase reaction.And
Modified manometer silicon dioxide dispersion liquid considerably reduces the viscosity and shear force of high solid system, illustrates in modified nano-silica
Under the action of silicon dispersion liquid, a large amount of soil particle can be added in high density drilling fluid and be filled closure, to make highly dense
Degree drilling fluid is taken into account rheological characteristic and is possibly realized with leak-off wave making machine.
4. effect of the modified manometer silicon dioxide dispersion liquid in high density drilling fluid system
2.2 gcm of density has been prepared using modified manometer silicon dioxide dispersion liquid-3, 200 DEG C of temperature resistance of high solid phase drilling fluid body
System's (specific formula are as follows: using water as radix, 1.5% soil+0.1%Na is added2CO3+ 5% walchowite SPNH+5% phenolic resin SMP-3+
The molten sulfonated gilsonite FF-1+5% polymeric alcohol polyol+5% nano silica dispersion of 1.5% co-polymer of sulfonate DSP-1+3% peracid
Liquid+30%NaCl+2%CaCO3(4000 mesh), uses BaSO4It is weighed out to ρ=2.2g/cm3), and its performance is tested, concrete outcome is such as
Shown in table 3.
Effect of the 3 modified manometer silicon dioxide dispersion liquid of table in high density drilling fluid system
Note: YP- yield value；FLAPIFor fluid loss；FLHTHPFor drilling fluid filtration under high-temperature high-pressure state；"-" is above
Instrument range, can not readings.
As can be seen from Table 3, exceed readings range for 600 turns when modified manometer silicon dioxide dispersion liquid is not added, and after aging
3 turns of readings are excessive, the viscosity that high density drilling fluid can be greatly lowered in modified manometer silicon dioxide dispersion liquid are added, especially
It is low-shear rate viscosity, and mud cake quality can be improved in nano particle participation composition mud cake, playing reduces high temperature and pressure filter
The effect of vector solves the problems, such as that high density drilling fluid rheological characteristic is difficult to take into account with leak-off wave making machine for a long time.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of drilling fluid preparation method of modified manometer silicon dioxide dispersion liquid, which comprises the steps of:
1) ethyl orthosilicate and low carbon alcohol solution are mixed with the mass volume ratio of 50-120 g:100-200 mL, is mixed
Close liquid；
The mass ratio of low-carbon alcohols and water is 1.2-3:1 in the low carbon alcohol solution；
2) mixed liquor of the step 1) is warming up to 30-80 DEG C, is mixed with the acid solution that mass fraction is 10%-30%, in 30-
80 DEG C of reaction 5-20 min, obtain the first reaction solution；
The volume ratio of the acid solution and low carbon alcohol solution is 20-50 mL:100-200 mL；
3) it carries out that the acid solution that mass fraction is 10%-30% is added dropwise for the first time in the first reaction solution of the step 2, is added dropwise
After the completion in 30-80 DEG C of reaction 3-6 h, the second reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
4) second is carried out in the second reaction solution of the step 3), the acid solution that mass fraction is 10%-30% is added dropwise, be added dropwise
After the completion in 30-80 DEG C of reaction 2-4 h, third reaction solution is obtained；
The volume ratio of the acid solution and low carbon alcohol solution is 20-60 mL:100-200 mL；
5) the third reaction solution of the step 4) is mixed with surfactant solution, adjusts pH value to 7-11, drop with aqueous slkali
Add silane coupling agent, 6-12 h is stirred at room temperature after being added dropwise to complete, obtains modified manometer silicon dioxide dispersion liquid；
The mass volume ratio of surfactant and water is 0.2-1 g:15 mL in the surfactant solution；
The mass ratio of the third reaction solution and surfactant is 10 g:0.2-1 g；
The mass ratio of the silane coupling agent and third reaction solution is 0.4-2.0 g:10 g.
2. preparation method according to claim 1, which is characterized in that low-carbon alcohols in low carbon alcohol solution in the step 1)
For one or more of ethyl alcohol, ethylene glycol, propylene glycol and glycerine.
3. preparation method according to claim 1, which is characterized in that the step 2-4) in acid solution be acetic acid, sulfuric acid
One or more of with hydrochloric acid solution, aqueous slkali is sodium hydroxide solution in the step 5).
4. preparation method according to claim 1, which is characterized in that the step 3) and 4) in be added dropwise speed be
0.11-0.30 mL/min。
5. preparation method according to claim 1, which is characterized in that surfactant is dodecyl in the step 5)
One or more of sodium sulphate, Brij30 and polysorbas20.
6. preparation method according to claim 1, which is characterized in that silane coupling agent is γ-ammonia third in the step 5)
Ethyl triethoxy silicane alkane, vinyltriethoxysilane, γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, vinyl three
One or more of methoxy silane and vinyl three (beta-methoxy ethyoxyl) silane.
7. preparation method according to claim 1, which is characterized in that the speed stirred in the step 5) is 1000-
3000 r/min。
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Denomination of invention: Preparation method and application of a modified nano silica dispersion for drilling fluid Effective date of registration: 20230407 Granted publication date: 20201218 Pledgee: Dongying Branch of China Postal Savings Bank Co.,Ltd. Pledgor: SHANDONG DESHUNYUAN PETROLEUM SCI.AND TECH. CO.,LTD. Registration number: Y2023980037545 |