CN104419395B - Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof - Google Patents
Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof Download PDFInfo
- Publication number
- CN104419395B CN104419395B CN201310362333.4A CN201310362333A CN104419395B CN 104419395 B CN104419395 B CN 104419395B CN 201310362333 A CN201310362333 A CN 201310362333A CN 104419395 B CN104419395 B CN 104419395B
- Authority
- CN
- China
- Prior art keywords
- nanoemulsions
- resistant
- alcohol
- mass fraction
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C09K8/58—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
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)
- Colloid Chemistry (AREA)
Abstract
Temperature-resistant and anti-salt type nanoemulsions oil displacement system adopted for oil field three and preparation method thereof, it is characterised in that：Mass fraction is used as dispersed phase for 0.01% 5% alkane, cation form activating agent that zwitterionic surfactant that nonionic surfactant that mass fraction is 5% 25%, mass fraction are 5% 20%, mass fraction are 10% 20%, mass fraction be 10% 35% low-carbon alcohols as cosurfactant, remainder is water.At 5 40 DEG C, water, surfactant are passed through into magnetic stirring apparatus first, stirred with 100 500rpm mixing speed, add the low-carbon alcohols as cosurfactant, it is to be mixed it is uniform after, dispersed phase is added dropwise into system again, while keeping 100 500rpm mixing speed to stir 5 60min, nanoemulsions are obtained.Nanoemulsions average grain diameter disclosed in this invention is less than 100nm, and with good temperature resistance salt resistant character, indoor oil displacement test result shows：0.1% nanoemulsions can improve recovery ratio 7.9% on the basis of water drive, and recovery ratio can be improved 19.8% by 1% nanoemulsions on the basis of water drive.
Description
Technical field
Oilfield additive technical field of the present invention, is related to for the temperature-resistant and anti-salt type nanoemulsions of tertiary oil recovery and its preparation
Method.
Background technology
Since the nineties in last century, each elephant of China enters high water cut stage, and underground crude oil is in discontinuous
Dispersity, to improve recovery ratio, tertiary oil recovery technology is increasingly valued by people.It is main in the method for tertiary oil recovery
There are polymer flooding, surfactant drive and combination flooding etc., the focus studied at present also focuses on how to improve tertiary oil recovery
Recovery ratio.Therefore in the urgent need to developing new and effective oil displacement system.
Nanoemulsions may be defined as a kind of emulsion types, wherein it is scattered the average droplet size of discontinuous phase be less than
1000nm, continuous phase and it is scattered the component of discontinuous phase must be not miscible enough so that respective phase can be formed, these breasts
Liquid includes nonpolar phase（Commonly referred to as oil phase）, polarity phase（Generally aqueous and referred to as aqueous phase or aqueous phase）, surfactant
And cosurfactant.
Because nanoparticle size is small, specific surface area big, so surface atom number, surface energy and surface tension are with particle diameter
Decline increased dramatically, so as to show four big effects：Skin effect, small-size effect, quantum size effect and macroscopic quantum tunnel
Channel effect, makes nano-particle occur in that many new kink characteristics for being different from conventional particle.In addition, the ternary formed from nanoemulsions
Phasor, which can be seen that, to be met to form the nanoemulsions region best region of the compatibilization effect to oil that is also system, that is to say, that received
Rice milk liquid system has best compatibilization effect to oil, theoretically a kind of efficient oil displacement system.
The content of the invention
The invention provides a kind of new and effective for the temperature-resistant and anti-salt type nanoemulsions of tertiary oil recovery and preparation side
Method.
The technical solution used in the present invention is：A kind of new and effective temperature-resistant and anti-salt type nanoemulsions displacement of reservoir oil body is provided
System, i.e. the temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery, the nanoemulsions include following several components, and mass fraction is
0.01%-5% dispersed phase, the both sexes that nonionic surfactant that mass fraction is 5%-25%, mass fraction are 5%-20% from
Cation form activating agent that sub- surfactant, mass fraction are 10%-20%, mass fraction are 10%-35% low-carbon alcohols as helping
Surfactant, remainder is water.
Temperature-resistant and anti-salt type nanoemulsions preparation method for tertiary oil recovery is：In the case where 40 DEG C of 5-, first by water, surface
Activating agent is stirred with 100-500rpm mixing speed, added as cosurfactant by magnetic stirring apparatus
Low-carbon alcohols, it is to be mixed it is uniform after, then into system dispersed phase is added dropwise, while keeping 100-500rpm mixing speed stirring 5-
60min, you can obtain the nanoemulsions of appearance transparent.
The dispersed phase be hexane, heptane, octane, decane, n-dodecane, n-tetradecane hexadecane, atoleine or
White oil.
The nonionic surfactant is APEO fatty alcohol, and the structure of APEO fatty alcohol is R- (O-
C-C)x- OH, wherein R are the alkyl that carbon number is 6-15, and x is 8-25.
The zwitterionic surfactant is betaines surfactant, includes but are not limited to cocamidopropyl propyl amide
Glycine betaine, lauroylamidopropyl betaine, cocamidopropyl propyl amide amine oxide, dodecanamide propyl amine oxide, dimethyl
Base amine oxide, dodecyldimethylammonium hydroxide inner salt, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecanamide propyl hydroxyl sulfonic acid beet
Alkali, and combinations thereof.
The cationic surfactant includes but are not limited to DTAC, trimethyl
Ammonium bromide, dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, cetyl trimethyl chlorination
Ammonium, cetyl trimethylammonium bromide, cetalkonium chloride, cetyl dimethyl benzyl ammonium bromide, ten
Eight alkyl trimethyl ammonium chlorides, Cetyltrimethylammonium bromide, stearyl dimethyl benzyl ammonium chloride, hexadecyldimethylamine
Base Benzylphosphonium Bromide ammonium, and combinations thereof.
The low-carbon alcohols as cosurfactant are ethanol, normal propyl alcohol, isopropanol, n-butanol, isobutanol, Zhong Ding
Alcohol, the tert-butyl alcohol, 1- amylalcohols, 2- amylalcohols, 3- amylalcohols, 2-methyl-1-butene alcohol, 2- methyl -2- butanol, 3- methyl -2- butanol, 3- first
Base-n-butyl alcohol, 2,2- dimethyl -1- propyl alcohol, 1- hexanols, 2- hexanols, 3- hexanols, 4- methyl -2- amylalcohols, n-heptanol, n-octyl alcohol,
Ethylene glycol, propane diols, and combinations thereof..
The temperature-resistant and anti-salt type nanoemulsions be used for tertiary oil production in oil field.
Nanoemulsions average grain diameter disclosed in this invention is less than 100nm, and its preparation method is simple, with good heatproof
Salt-resistance and Oil Displacing Capacity.Indoor oil displacement test result shows：0.1% nanoemulsions can carry recovery ratio on the basis of water drive
High by 7.9%, recovery ratio can be improved 19.8% by 1% nanoemulsions on the basis of water drive.
Embodiment
Embodiment 1
Weigh 4.00g APEO fatty alcohol AEO9,3.00g cetyl trimethylammonium bromide CTAB, 1.50g coconut palms
Oleamide CAB CAB, 5.50g n-butanol and 5.00g water are in beaker, and control system temperature is maintained at 25 DEG C, in magnetic
Stirring 35 min on power agitator with 300rpm makes system stir, and 0.75g white oils are now slowly added dropwise into beaker again,
Magnetic stirrer speed 300rpm is kept, after white oil dropwise addition completely, continues to stir 60min in 300rpm mixing speed,
It can obtain the nanoemulsions of outward appearance clear.Nano-emulsion is determined using the ZetaPlus of Brooker Hai Wen instrument companies of the U.S.
The size droplet diameter of liquid, obtained nanoemulsions average grain diameter and particle diameter distribution are as shown in table 1.
The nanoemulsions system particle diameter distribution of 1 embodiment of table 1
Embodiment 2
Weigh 4.80g APEO fatty alcohol AEO20,3.50g hexadecyltrimethylammonium chloride, 3.20g cocounut oil acyls
Amine propyl group amine oxide, 8.50g ethylene glycol and 5.50g water are in beaker, and control system temperature is maintained at 25 DEG C, in magnetic agitation
Stirring 30 min on device with 200rpm makes system stir, and 0.50g n-hexanes are now slowly added dropwise into beaker again, keep
Magnetic stirrer speed 200rpm, after n-hexane is added dropwise completely, continues to stir 50min, i.e., in 200rpm mixing speed
It can obtain the nanoemulsions of outward appearance clear.Nanoemulsions are determined using the ZetaPlus of Brooker Hai Wen instrument companies of the U.S.
Size droplet diameter, obtained nanoemulsions average grain diameter and particle diameter distribution are as shown in table 2.
The nanoemulsions system particle diameter distribution of 2 embodiment of table 2
Embodiment 3
Weigh 2.80g APEO fatty alcohol AEO16,3.4g dodecyl benzyl dimethyl ammonium chloride, 2.30g 12
Alkyl dimethyl amine oxide, 6.00g 4- methyl -2- amylalcohols and 7.00g water are in beaker, and control system temperature is maintained at 25
DEG C, system is stirred with 20 min of 300rpm stirrings on magnetic stirring apparatus, 1.00g is now slowly added dropwise into beaker again
White oil, magnetic stirrer speed 300rpm is kept, after white oil dropwise addition completely, continues to stir in 300rpm mixing speed
60min, you can obtain the nanoemulsions of outward appearance clear.
The size droplet diameter of nanoemulsions is determined using the ZetaPlus of Brooker Hai Wen instrument companies of the U.S., obtained receives
Rice milk liquid average grain diameter and particle diameter distribution are as shown in table 3.
The nanoemulsions system particle diameter distribution of 3 embodiment of table 3
Embodiment 4
The nanoemulsions prepared in embodiment 1 are poured into aging reactor, high temp roller heating is placed under conditions of 110 DEG C
Nanoemulsions are clear before and after aging 24h in stove, aging, illustrate that nanoemulsions have preferable heat-resisting property.
Embodiment 5
The saline solution of certain salinity is prepared, wherein NaCl mass concentration is 25.0%, CaCl2Mass concentration be
0.60%, the nanoemulsions prepared in embodiment 1 are dissolved in prepared saline solution, nanoemulsions mass concentration is
2.5%.Obtained nanoemulsions saline solution clear, does not occur the phenomenons such as layering, floccule, precipitation or muddiness, and explanation is received
Rice milk liquid solubility property in salt solution is good, with good anti-salt property.
Embodiment 6
Zhongyuan Oil Field stratum water total salinity 50000mg/L, wherein Ca2+、Mg2+Ion concentration is 5000mg/L, on stratum
The nanoemulsions prepared in embodiment 1 are dissolved in water, the nanoemulsions formation water that mass concentration is 0.1% are made, using day
Right rock core carries out laboratory core displacement oil displacement test, and nanoemulsions formation water injection rate is 1 pore volume, and recovery ratio is in water
7.91% is improved on the basis of drive.
Embodiment 7
Zhongyuan Oil Field stratum water total salinity 50000mg/L, wherein Ca2+、Mg2+Ion concentration is 5000mg/L, on stratum
The nanoemulsions prepared in embodiment 1 are dissolved in water, the nanoemulsions formation water that mass concentration is 0.5% are made, using day
Right rock core carries out laboratory core displacement oil displacement test, and nanoemulsions formation water injection rate is 1 pore volume, and recovery ratio is in water
14.93% is improved on the basis of drive.
Embodiment 8
Zhongyuan Oil Field stratum water total salinity 50000mg/L, wherein Ca2+、Mg2+Ion concentration is 5000mg/L, on stratum
The nanoemulsions prepared in embodiment 2 are dissolved in water, the nanoemulsions formation water that mass concentration is 1% are made, using natural
Rock core carries out laboratory core displacement oil displacement test, and nanoemulsions formation water injection rate is 1 pore volume, and recovery ratio is in water drive
On the basis of improve 19.85%.
Embodiment 9
Zhongyuan Oil Field stratum water total salinity 50000mg/L, wherein Ca2+、Mg2+Ion concentration is 5000mg/L, on stratum
The nanoemulsions prepared in embodiment 2 are dissolved in water, the nanoemulsions formation water that mass concentration is 0.5% are made, using day
Right rock core carries out laboratory core displacement oil displacement test, and nanoemulsions formation water injection rate is 1 pore volume, and recovery ratio is in water
17.59% is improved on the basis of drive.
Embodiment 10
Zhongyuan Oil Field stratum water total salinity 50000mg/L, wherein Ca2+、Mg2+Ion concentration is 5000mg/L, on stratum
The nanoemulsions prepared in embodiment 3 are dissolved in water, the nanoemulsions formation water that mass concentration is 1% are made, using natural
Rock core carries out laboratory core displacement oil displacement test, and nanoemulsions formation water injection rate is 1 pore volume, and recovery ratio is in water drive
On the basis of improve 14.91%.
Claims (3)
1. a kind of temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery, it is characterised in that：The nanoemulsions by mass percentage
Contain following component：
The average grain diameter of the nanoemulsions is less than 100nm；
The dispersed phase is hexane, heptane, octane, decane, n-dodecane, n-tetradecane, hexadecane, atoleine or white
Oil；The nonionic surfactant is APEO fatty alcohol, and the structure of APEO fatty alcohol is R- (O-C-C)x-
OH, wherein R are the alkyl that carbon number is 6-15, and x is 8-25；The zwitterionic surfactant includes cocamidopropyl propyl amide beet
Alkali, lauroylamidopropyl betaine, cocamidopropyl propyl amide amine oxide, dodecanamide propyl amine oxide, dodecyl dimethyl oxygen
Change in amine, dodecyldimethylammonium hydroxide inner salt, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecanamide propyl hydroxyl sulphonic acid betaine
One or more；The cationic surfactant includes DTAC, trimethyl bromination
Ammonium, dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, hexadecyltrimethylammonium chloride, ten
Six alkyl trimethyl ammonium bromides, cetalkonium chloride, cetyl dimethyl benzyl ammonium bromide, octadecyl
Trimethyl ammonium chloride, Cetyltrimethylammonium bromide, stearyl dimethyl benzyl ammonium chloride, octadecyl dimethyl benzyl
One or more in ammonium bromide；The low-carbon alcohols as cosurfactant be ethanol, normal propyl alcohol, isopropanol, n-butanol,
Isobutanol, sec-butyl alcohol, the tert-butyl alcohol, 1- amylalcohols, 2- amylalcohols, 3- amylalcohols, 2-methyl-1-butene alcohol, 2- methyl -2- butanol, 3- methyl -
2- butanol, 3- methyl-1-butanols, 2,2- dimethyl -1- propyl alcohol, 1- hexanols, 2- hexanols, 3- hexanols, 4- methyl -2- amylalcohols, just
One or more in enanthol, n-octyl alcohol, ethylene glycol, propane diols.
2. it is used for the preparation method of the temperature-resistant and anti-salt type nanoemulsions of tertiary oil recovery as claimed in claim 1, it is characterised in that：
At 5-40 DEG C, water and surfactant are stirred by magnetic stirring apparatus with 100-500rpm mixing speed first,
Add the low-carbon alcohols as cosurfactant, it is to be mixed it is uniform after, dispersed phase is added dropwise into system, while keeping 100-
500rpm mixing speed stirring 5-60min, you can obtain the nanoemulsions of appearance transparent.
3. it is used for the application of the temperature-resistant and anti-salt type nanoemulsions of tertiary oil recovery as claimed in claim 1, it is characterized in that for oil field
Tertiary oil recovery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362333.4A CN104419395B (en) | 2013-08-20 | 2013-08-20 | Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362333.4A CN104419395B (en) | 2013-08-20 | 2013-08-20 | Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104419395A CN104419395A (en) | 2015-03-18 |
| CN104419395B true CN104419395B (en) | 2017-10-13 |
Family
ID=52969528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310362333.4A Active CN104419395B (en) | 2013-08-20 | 2013-08-20 | Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104419395B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281274B (en) * | 2015-06-08 | 2019-03-29 | 中国石油化工股份有限公司 | A kind of oil-field flooding Gemini surface active agent nanoemulsions injection agent and preparation method |
| US9868669B2 (en) | 2015-09-25 | 2018-01-16 | Mitsubishi Materials Corporation | Precious metal clay regeneration solution and method for regenerating precious metal clay |
| CN106893571B (en) * | 2017-03-03 | 2019-09-20 | 中国石油大学(华东) | A kind of oil-in-water emulsion oil displacement agent |
| US11008501B2 (en) * | 2017-03-09 | 2021-05-18 | Saudi Arabian Oil Company | Nanosurfactants for improved and enhanced oil recovery applications |
| US11066914B2 (en) | 2017-03-09 | 2021-07-20 | Saudi Arabian Oil Company | Foam from low cost petroleum sulfonate surfactants for fracturing along with wettability alteration |
| US11066594B2 (en) | 2017-03-09 | 2021-07-20 | Saudi Arabian Oil Company | Fluoropolymers to reduce retention of nanosurfactants to carbonate reservoir rock for applications in oil fields |
| US11078405B2 (en) | 2017-03-09 | 2021-08-03 | Saudi Arabian Oil Company | 3 in 1 foam formulation for enhanced oil recovery including conformance control, ultra-low interfacial tension, and wettability alteration |
| US11084972B2 (en) | 2017-03-09 | 2021-08-10 | Saudi Arabian Oil Company | Surface charge modified nanosurfactants for reduced retention by reservoir rock |
| CN107227148A (en) * | 2017-06-08 | 2017-10-03 | 浙江海洋大学 | A kind of micro emulsion transfer drive system prepared by raw material of swill oil |
| CN107779186A (en) * | 2017-07-10 | 2018-03-09 | 浙江海洋大学 | Trench oil emulsion transfer drive |
| CN109423269B (en) * | 2017-08-23 | 2020-12-22 | 中国石油化工股份有限公司 | Calcium-resistant nano emulsion oil displacement agent |
| CN110527503B (en) * | 2018-05-24 | 2021-08-20 | 中国石油化工股份有限公司 | Anion-cation pair nanoemulsion oil displacement agent for oil displacement of medium-low permeability reservoir |
| CN110964494B (en) * | 2018-09-30 | 2021-12-10 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
| CN111826148A (en) * | 2019-04-15 | 2020-10-27 | 中国石油化工股份有限公司 | Salt-resistant foaming agent and preparation method and application thereof |
| CN110129019B (en) * | 2019-06-11 | 2021-01-26 | 西南石油大学 | Nano oil displacement agent for tertiary oil recovery and preparation method thereof |
| CN110173250B (en) * | 2019-06-14 | 2021-10-15 | 北京石油化工学院 | Fracturing method for modifying dry hot rock reservoir by using nano emulsion |
| CN110373171B (en) * | 2019-07-10 | 2021-07-13 | 浙江海洋大学 | Oil repellent emulsion stabilized by magnetic nanoparticles |
| CN111944507B (en) * | 2020-09-01 | 2023-04-14 | 宁波锋成先进能源材料研究院有限公司 | Nano active agent system and preparation method and application thereof |
| CN111944506B (en) * | 2020-09-01 | 2023-02-21 | 宁波锋成先进能源材料研究院有限公司 | Pressure-reducing and injection-increasing active agent and preparation method thereof |
| CN112980415B (en) * | 2021-02-19 | 2021-11-16 | 中国石油大学(华东) | Multi-grafting-site nano carbon material and active nano carbon material, preparation methods thereof and oil displacement system for ultra-low permeability reservoir |
| CN115772395A (en) * | 2021-09-06 | 2023-03-10 | 中石化南京化工研究院有限公司 | Nanoemulsion oil displacement agent based on anion and cation pair surfactant |
| CN116103029A (en) * | 2021-11-10 | 2023-05-12 | 中国石油天然气集团有限公司 | Microemulsion system and preparation and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721930A (en) * | 2009-12-15 | 2010-06-09 | 山东大学 | Low-energy preparation method of positive electricity nanometer emulsion |
-
2013
- 2013-08-20 CN CN201310362333.4A patent/CN104419395B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721930A (en) * | 2009-12-15 | 2010-06-09 | 山东大学 | Low-energy preparation method of positive electricity nanometer emulsion |
Non-Patent Citations (1)
| Title |
|---|
| 甜菜碱型表面活性剂驱油体系的研究;应丹丹;《中国优秀硕士学位论文全文数据库（电子期刊）》;20130615(第6期);正文第5-6页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104419395A (en) | 2015-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104419395B (en) | Temperature-resistant and anti-salt type nanoemulsions for tertiary oil recovery and preparation method thereof | |
| Chowdhury et al. | Comprehensive review on the role of surfactants in the chemical enhanced oil recovery process | |
| CN104178099B (en) | A kind of temperature-resistant and anti-salt type nanoemulsions and its preparation method and application | |
| Pal et al. | Performance evaluation of novel sunflower oil-based gemini surfactant (s) with different spacer lengths: application in enhanced oil recovery | |
| Betancur et al. | Importance of the nanofluid preparation for ultra-low interfacial tension in enhanced oil recovery based on surfactant–nanoparticle–brine system interaction | |
| Majeed et al. | A review on foam stabilizers for enhanced oil recovery | |
| Li et al. | Properties of CO2 foam stabilized by hydrophilic nanoparticles and nonionic surfactants | |
| Trickett et al. | Surfactant-based gels | |
| Drinkel et al. | The chameleon effect in zwitterionic micelles: binding of anions and cations and use as nanoparticle stabilizing agents | |
| CN102952531B (en) | Surfactant for displacing oil of offshore oilfield and preparation method thereof | |
| Hao et al. | Mixed micellization and the dissociated margules model for cationic/anionic surfactant systems | |
| Kesarwani et al. | Application of novel colloidal silica nanoparticles in the reduction of adsorption of surfactant and improvement of oil recovery using surfactant polymer flooding | |
| CN110527503A (en) | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent | |
| Kharazi et al. | Review on amphiphilic ionic liquids as new surfactants: from fundamentals to applications | |
| Rellegadla et al. | An effective approach for enhanced oil recovery using nickel nanoparticles assisted polymer flooding | |
| Souayeh et al. | Experimental investigation of wettability alteration of oil-wet carbonates by a non-ionic surfactant | |
| CN112266775A (en) | Preparation of in-situ nano emulsifier and oil reservoir application method | |
| CN110079291A (en) | Emulsify increasing stick system in situ containing high transformation temperature and in the application of water-drive pool | |
| CN108329420A (en) | Low-tension polymer microballoon profile control agent and its preparation method and application | |
| Singh et al. | Multistimuli-responsive foams using an anionic surfactant | |
| CN103409123A (en) | Application of glycine betaine surface active agent system in chemical oil displacement | |
| Yang et al. | New method based on CO2-switchable wormlike micelles for controlling CO2 breakthrough in a tight fractured oil reservoir | |
| Lv et al. | Enhanced oil recovery using aqueous CO2 foam stabilized by particulate matter from coal combustion | |
| Nandwani et al. | Potential of a novel surfactant slug in recovering additional oil from highly saline calcite cores during the EOR process: synergistic blend of surface active ionic liquid and nonionic surfactant | |
| CN109423269A (en) | A kind of anticalcium type nanoemulsions oil displacement agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |
|
| CP01 | Change in the name or title of a patent holder |