CN104893699B - Nano foam stabilizer, and preparation method and application thereof - Google Patents
Nano foam stabilizer, and preparation method and application thereof Download PDFInfo
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000008208 nanofoam Substances 0.000 title abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims abstract description 3
- 239000006260 foam Substances 0.000 claims description 97
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 238000007599 discharging Methods 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 30
- 239000007791 liquid phase Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 8
- -1 triethoxy methyl silicane Chemical compound 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002343 natural gas well Substances 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- NCXGHXGJBJOHRK-UHFFFAOYSA-N C(CC)OS(=O)(=O)O.C(CCCCCCCCCCC)(=O)N Chemical compound C(CC)OS(=O)(=O)O.C(CCCCCCCCCCC)(=O)N NCXGHXGJBJOHRK-UHFFFAOYSA-N 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 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 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 2
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 claims description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 claims 1
- 241000335053 Beta vulgaris Species 0.000 claims 1
- 239000003513 alkali Substances 0.000 claims 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims 1
- 239000005050 vinyl trichlorosilane Substances 0.000 claims 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 239000006087 Silane Coupling Agent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005187 foaming Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229960003237 betaine Drugs 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical class CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- 241001044369 Amphion Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Detergent Compositions (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a nano foam stabilizer and a preparation method and application thereof, wherein the preparation method of the nano foam stabilizer comprises the steps of putting 1-3g of spherical silicon dioxide with the diameter of 10-130nm into a reaction container, adding 20-50m L absolute ethyl alcohol into the reaction container, stirring until the silicon dioxide is dispersed, heating to 90-130 ℃ to obtain a first product, adding 2-10m L silane coupling agent into the first product at one time, dropwise adding 5-10m L ammonia water into the first product, refluxing to obtain a second product, carrying out centrifugal separation on the second product to obtain a third product, washing the third product with the absolute ethyl alcohol, and drying to obtain the nano foam stabilizer.
Description
Technical field
The present invention relates to a kind of nanometer foam stabilizer and preparation method and application, belong to oil and gas exploitation field.
Background technology
Deep gas well generally has gas-bearing formation temperature higher (100-160 DEG C), salinity high (100000-250000ppm)
Feature.The universal water breakthrough of initial stage of development gas well, most gas wells do not have anhydrous gas production phase or anhydrous gas production phase shorter.Well after gas well water breakthrough
Mouth pressure, gas production decline rapidly, and shaft bottom hydrops is caused because fluid-carrying capability declines, and will cause the gas well underproduction even stop-spraying.With
The extension of development time, Gas well dewatering will have a strong impact on normal production and the development effectiveness in gas field of gas well.It is existing for this
Shape, it is necessary to carry out drainage gas recovery in time, solve the problems, such as deep gas well discharge opeing.Foam drainage gas recovery technique with its investment it is small,
The reason such as easy for construction turns into the first choice of water drainage-gas recovery technology.The principle of foam drainage gas recovery technique is to fluid-carrying capability deficiency
Injection foaming agent in producing well, it is allowed to mix and produce under the agitation of air-flow with shaft bottom hydrops the foam of a large amount of low-density, drop
Low downhole well fluid density, reduce liquid and slip loss, improve the fluid-carrying capability of gas well.Therefore the performance of foam discharging agent turns into foam
The key factor of water drainage-gas recovery technology.
At present, domestic existing foam discharging agent applies in general to less than 90 DEG C of stratum, with the rise of temperature, its energy that bubbles
Power and stability substantially reduce, and part foam discharging agent is even non-foaming when higher than 120 DEG C；In addition, these foam discharging agents are in salinity
During more than 100000ppm, its foaming characteristic and stability also can degradation, so as to hinder foam drainage gas recovery in deep layer height
Application in temperature, high salinity gas well.Foam is a kind of Unstable Systems, main for improving the mode of foam stability at present
There are two kinds：One kind is to carry out simple be modified again again by being compounded between Surfactant, or by surfactant
Match somebody with somebody, make use of the synergy between surfactant；Another kind is to increase system viscosity by adding some polymer to drop
The discharge opeing speed of low foam is so as to reaching the effect of stable foam.However, Surfactant carries out compounding use less effective,
It is fine to be modified the foam discharging agent using effect compounded again, but its is expensive；The polymer of addition then can be at high temperature
Meeting thermal degradation, the debris remained can cause formation damage to a certain extent.In summary, these enhancing foams are steady
Qualitatively mode all comes with some shortcomings.
Therefore it provides a kind of foam stabilizer that can strengthen foam stability turns into this area technical problem urgently to be resolved hurrily.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of nanometer foam stabilizer and preparation method thereof, the nanometer
Foam stabilizer can increase common liquid phase foam discharging agent has excellent foaming characteristic and foam stability under the conditions of high temperature, high salinity.
To reach above-mentioned purpose, the invention provides the preparation method of a kind of nanometer of foam stabilizer, and it comprises the following steps：
A, take a diameter of 10-130nm of 1-3g spherical silicon dioxide to be placed in reaction vessel, add into the reaction vessel
Enter 20-50mL absolute ethyl alcohols, stir to silica and be heated to 90-130 DEG C after disperseing, obtain the first product；
B, 2-10mL silane couplers are disposably added into above-mentioned first product, then 5-10mL ammoniacal liquor is added dropwise thereto,
Backflow, obtains the second product；
C, above-mentioned second product is centrifuged to obtain third product, the third product is washed with absolute ethyl alcohol
Wash, dry, obtain a nanometer foam stabilizer.
In the above-mentioned methods, it is preferable that in stepb, the silane coupler includes trim,ethylchlorosilane, vinyl three
Chlorosilane, vinyltrimethoxy silane, VTES, triethoxy methyl silicane, aminopropyl-triethoxy
Any of silane, ethylenediaminepropyltriethoxysilane.
In the above-mentioned methods, it is preferable that in stepb, the speed of the dropwise addition is 0.1-0.4mL/min, the ammoniacal liquor
Mass concentration be 25-28%.
In the above-mentioned methods, it is preferable that in stepb, the reflux temperature is 90-130 DEG C, return time 1-4h.
In the above-mentioned methods, it is preferable that in step c, the washing times are 3-5 times.
In the above-mentioned methods, it is preferable that in step c, the drying temperature is 40-80 DEG C, drying time 1-5h.
Present invention also offers a kind of nanometer foam stabilizer, and it is prepared by the above method, when the nanometer foam stabilizer is put
When in liquid, its airwater mist cooling contact angle formed with gas phase and liquid phase is 40-85 °.
Because nanometer foam stabilizer provided by the invention has suitable diameter and airwater mist cooling contact angle, therefore general
The particlized film that liquid-vapor interface forms solid-state can be adsorbed in logical liquid phase foam discharging agent, so as to prevent due to surface-active dosage form
Into liquid film the mobility coalescence and disproportionation of bubble brought.
It will be received present invention also offers application of the above-mentioned nanometer foam stabilizer in natural gas well foam drainage gas recovery, during application
Rice foam stabilizer is compounded with liquid phase foam discharging agent, wherein：The mass ratio of the nanometer foam stabilizer and liquid phase foam discharging agent is 1-10%；
Preferably, by percentage to the quality, the composition of the foam discharging agent includes 20-40% dodecanamide propyl hydroxyl sulphonic acid betaines, 15-
30% α-sodium olefin sulfonate, surplus are water, and each component percentage sum is 100%；
In above-mentioned application, it is preferable that the temperature of mineralized water is 80-160 DEG C in the natural gas well, salinity 100000-
250000ppm。
Nanometer foam stabilizer provided by the invention has the advantages that：
(1) in the case where temperature range is 80-160 DEG C, salinity is less than 250000ppm, this nanometer of foam stabilizer can make common liquid
Phase foam discharging agent has higher initial bubbles volume V0With half foam life period t1/2, increasing common liquid phase foam discharging agent foaming characteristic
Its foam stability can also be greatly enhanced simultaneously；
(2) this nanometer of foam stabilizer can solve common liquid phase foaming agent when temperature and salinity raise, foaming properties rapid drawdown
The problem of, it is possible to increase deep layer high temperature, high salinity gas well foaming water discharge efficiency of construction；
(3) due to the Irreversible Adsorption and hypotoxicity of nano-particle the advantages that so that the stable foam tool of nano-particle
There is the features such as more preferable stability and environmental acceptability, and then cause increasing concern, before there certainly will be wide application
Scape.
Embodiment
In order to which technical characteristic, purpose and the beneficial effect of the present invention is more clearly understood, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
Embodiment 1
The preparation method of a kind of nanometer of foam stabilizer is present embodiments provided, it comprises the following steps：
The a diameter of 40nm of 2g spherical silicon dioxide is taken in there-necked flask, then adds 50mL absolute ethyl alcohols thereto, stirring
It is scattered, and it is heated to 120 DEG C.Into above-mentioned silica mixed system disposably add 4mL vinyl trichlorosilanes, then to its
In 7mL ammoniacal liquor (mass concentration is 25-28%) is added dropwise using 0.2mL/min speed, flow back 2h.Products therefrom is centrifuged and uses nothing
Water-ethanol washs 3 times, in 60 DEG C of dry 3h, obtains a nanometer foam stabilizer.
When this nanometer of foam stabilizer is placed in liquid, the airwater mist cooling contact angle formed with gas phase and liquid phase is 55 °.
Embodiment 2
The preparation method of a kind of nanometer of foam stabilizer is present embodiments provided, it comprises the following steps：
The a diameter of 80nm of 2.5g spherical silicon dioxide is taken in there-necked flask, then adds 50mL absolute ethyl alcohols thereto, is stirred
Mix scattered, and be heated to 130 DEG C.6mL aminopropyl triethoxysilanes are disposably added into above-mentioned silica mixed system,
7.5mL ammoniacal liquor (mass concentration is 25-28%) is added dropwise using 0.3mL/min speed thereto again, flow back 2.5h.By products therefrom
Centrifuge and washed 4 times with absolute ethyl alcohol, in 60 DEG C of dry 3h, obtain a nanometer foam stabilizer.
When this nanometer of foam stabilizer is placed in liquid, the airwater mist cooling contact angle formed with gas phase and liquid phase is 80 °.
Embodiment 3
The preparation method of a kind of nanometer of foam stabilizer and liquid phase foam discharging agent is present embodiments provided, it comprises the following steps：
The nanometer foam stabilizer that 3g is prepared by embodiment 1 is added into 100g foam discharging agents, and (foam discharging agent is by amphion
Surfactant compounds to obtain with anion surfactant) in, stirring at low speed 20min, that is, obtain nanometer foam stabilizer enhancing
Foam discharging agent；Wherein, by percentage to the quality, the composition of foam discharging agent includes 30% dodecanamide propyl hydroxyl sulphonic acid betaine, and 15%
α-sodium olefin sulfonate, surplus are water, and each component percentage sum is 100%.
Under the conditions of different temperatures and salinity, using HTHP foam evaluations instrument (HTHP foam evaluations instrument
For the HTHP foam evaluations instrument described in patent No. ZL201120400940.1 utility model patent, notification number
CN202228059U the foam discharging agent that with the addition of nanometer foam stabilizer and be not added with a nanometer foam stabilizer that) testing example 3 provides respectively
Foam discharging agent (by percentage to the quality, the composition of the foam discharging agent includes 30% dodecanamide propyl hydroxyl sulphonic acid betaine, 15% α-
Sodium olefin sulfonate, surplus are water, and each component percentage sum is initial bubbles volume V 100%)0With half foam life period t1/2。
Above-mentioned evaluation instrument can be under the conditions of 200 DEG C of simulation test stratum pressure 20MPa and temperature aerated fluid performance, specifically
Method is：At a certain temperature, 200mL foam discharging agent solution is injected by back-pressure valve, then is passed through certain pressure intensity (1MPa) gas
Body is so that produce a large amount of foams inside foam discharging agent solution, then by recording the initial bubbles volume V of foam0To reflect bubble row
The time t of the foaming characteristic of agent and foam attenuation to a half height1/2To reflect its foam stability.Test result is as shown in table 1.
The test result of table 1
After the mineralized water of test according to the water of live natural gas well output to be analyzed, using NaCl, CaCl2、
MgCl2、KCl、Na2SO4、NaHCO3Prepared；By above two foam discharging agent (embodiment 3 provide with the addition of a nanometer foam stabilizer
Foam discharging agent and be not added with the foam discharging agent of nanometer foam stabilizer) be dissolved in simulated formation water respectively after obtain liquid phase foam discharging agent solution,
When carrying out foaming characteristic and foam stability performance test, the volume of two kinds of liquid phases foam discharging agent solution used is 200mL, and mass concentration is equal
For 0.5% (densimeter for pressing surfactant).
As it can be seen from table 1 nanometer foam stabilizer provided by the invention can significantly improve the resistance to height of common liquid phase foam discharging agent
Temperature, the ability of high salinity, it is 100-160 DEG C in temperature, under conditions of salinity is 100000-250000ppm, has higher
Initial bubbles volume V0With half foam life period t1/2, there is excellent foamability and foam stabilizing ability.
Claims (10)
1. the preparation method of a kind of nanometer of foam stabilizer, it comprises the following steps：
A, take a diameter of 10-130nm of 1-3g spherical silicon dioxide to be placed in reaction vessel, added into the reaction vessel
20-50mL absolute ethyl alcohols, stir to silica and be heated to 90-130 DEG C after disperseing, obtain the first product；
B, 2-10mL silane couplers are disposably added into above-mentioned first product, then 5-10mL ammoniacal liquor is added dropwise thereto, backflow,
Obtain the second product；
C, above-mentioned second product is centrifuged to obtain third product, the third product is washed with absolute ethyl alcohol, done
It is dry, obtain a nanometer foam stabilizer.
2. the method according to claim 11, wherein：In stepb, the silane coupler include trim,ethylchlorosilane,
Vinyl trichlorosilane, vinyltrimethoxy silane, VTES, triethoxy methyl silicane, aminopropyl
Any of triethoxysilane, ethylenediaminepropyltriethoxysilane.
3. the method according to claim 11, wherein：In stepb, the speed of the dropwise addition is 0.1-0.4mL/min, institute
The mass concentration for stating ammoniacal liquor is 25-28%.
4. the method according to claim 11, wherein：In stepb, the reflux temperature is 90-130 DEG C, return time
For 1-4h.
5. the method according to claim 11, wherein：In step c, the washing times are 3-5 times.
6. the method according to claim 11, wherein：In step c, the drying temperature is 40-80 DEG C, and drying time is
1-5h。
7. a kind of nanometer foam stabilizer, it is prepared as the method described in claim any one of 1-6.
8. according to claim 7 nanometer of foam stabilizer, wherein：When the nanometer foam stabilizer is placed in liquid, itself and gas
The airwater mist cooling contact angle mutually formed with liquid phase is 40-85 °.
9. application of the nanometer foam stabilizer in natural gas well foam drainage gas recovery described in claim 7 or 8, by nanometer during application
Foam stabilizer is compounded with liquid phase foam discharging agent, wherein：The mass ratio of the nanometer foam stabilizer and liquid phase foam discharging agent is 1-10%；
Preferably, by percentage to the quality, the composition of the foam discharging agent includes 20-40% dodecanamide propyl hydroxyl sulfonic acid beets
Alkali, 15-30% α-sodium olefin sulfonate, surplus are water, and each component percentage sum is 100%.
10. application according to claim 9, wherein：The temperature of mineralized water is 80-160 DEG C in the natural gas well, mineralising
Spend for 100000-250000ppm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105315982A (en) * | 2015-11-12 | 2016-02-10 | 中国石油大学(华东) | System of three-phase enhanced foam oil displacement after two-component compound oil displacement |
| CN109681176B (en) * | 2017-10-18 | 2021-08-03 | 中国石油化工股份有限公司 | Method for liquid drainage and gas production by adopting oil-resistant foam drainage agent composition |
| CN109679632B (en) * | 2017-10-18 | 2021-03-30 | 中国石油化工股份有限公司 | Method for discharging liquid and producing gas by adopting foam drainage agent composition |
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