CN1528853A - Cationic Gemini Surfactants as Oil Displacing Agents - Google Patents
Cationic Gemini Surfactants as Oil Displacing Agents Download PDFInfo
- Publication number
- CN1528853A CN1528853A CNA2003101107173A CN200310110717A CN1528853A CN 1528853 A CN1528853 A CN 1528853A CN A2003101107173 A CNA2003101107173 A CN A2003101107173A CN 200310110717 A CN200310110717 A CN 200310110717A CN 1528853 A CN1528853 A CN 1528853A
- Authority
- CN
- China
- Prior art keywords
- oil
- surfactant
- gemini surfactant
- cationic
- cationic gemini
- 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.)
- Pending
Links
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 30
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 25
- 125000002091 cationic group Chemical group 0.000 title claims abstract description 14
- -1 ether Alcohol fatty acid ester Chemical class 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 239000003093 cationic surfactant Substances 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000003242 quaternary ammonium salts Chemical group 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims 3
- 239000002736 nonionic surfactant Substances 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 1
- 150000004665 fatty acids Chemical class 0.000 claims 1
- 150000002191 fatty alcohols Chemical group 0.000 claims 1
- 125000005647 linker group Chemical group 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 239000010779 crude oil Substances 0.000 abstract description 19
- 238000006073 displacement reaction Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 7
- 239000003513 alkali Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000013375 chromatographic separation Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000013543 active substance Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 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 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- ROSDSFDQCJNGOL-UHFFFAOYSA-N protonated dimethyl amine Natural products CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
本发明涉及可作为三次采油化学驱油剂的一种阳离子双子表面活性剂，以代号m－s－m表示，其中m代表表面活性剂烷基的碳原子数，s代表联结基碳原子数。其结构式如上。s＝2，3，4，5，6 m＝10，12，14，16，18该阳离子双子表面活性剂既可单独使用，也可以与其它表面活性剂复配。它使用时无须加碱，因而对地层无伤害，大大节约石油开采成本，且性能稳定，具有优良的降低油/水界面张力的能力，能在较宽的范围内保证原油/水具有超低界面张力，并克服了现有驱油剂因为色谱分离现象而导致的驱油效率下降，具有广阔的应用前景。
The invention relates to a cationic gemini surfactant which can be used as a chemical oil displacement agent for tertiary oil recovery. Its structural formula is as above. s=2, 3, 4, 5, 6 m=10, 12, 14, 16, 18 The cationic gemini surfactant can be used alone or compounded with other surfactants. It does not need to add alkali when it is used, so it has no damage to the formation, greatly saves the cost of oil extraction, and has stable performance. It has an excellent ability to reduce the oil/water interfacial tension and can ensure that the crude oil/water has an ultra-low interface in a wide range. Tension, and overcome the oil displacement efficiency drop caused by the chromatographic separation phenomenon of the existing oil displacement agent, has broad application prospects.
Description
Technical field
The present invention relates to can be used as a kind of cation Gemini surfactant of tertiary oil recovery chemical oil displacement agent.
Background technology
The many oil fields of China enter development late stage successively, and the application of tertiary oil recovery technology is paid attention to widely.In the latter stage of waterflooding, irreducible oil be with the immobilized spherical distribution in the hole of reservoir rocks.Reducing interfacial tension is to force the irreducible oil mobile sole mode that is trapped in the porous medium, also is the effective ways that can increase substantially oilfield exploitation efficient.Oil-displacing agent must be reduced to 10 with oil water interfacial tension
-3The mN/m or the lower order of magnitude, otherwise will not have practical value.Because simple tensio-active agent is difficult to oil water interfacial tension is reduced to 10
-3Below the mN/m, therefore, the present tensio-active agent that uses in the chemical flooding, great majority add the compound of auxiliary agent such as alkaline agent for petroleum sodium sulfonate.Yet adding alkaline agent can make the pH value raise, make the expansion of clay mineral aggravate, water sensitivity strengthens, and the commutative high-valence cationic effect in sulfonated petro-leum and local water and the clay forms the sulfonate precipitation, fouling etc. in the stratum, thereby bigger injury is caused on the stratum, seriously influenced the sustainable exploitation of oil.And the consumption of sodium hydroxide also increased the cost of winning of oil generally all than higher, influenced the economic benefit of oil production.In addition, because compound is a mixture, when multi-component system flows in oil reservoir, chromatographic separation may take place between each composition of oil-displacing agent, thereby can destroy the integrity of original formulation system, therefore can make established ultra low interfacial tension disappear, so that oil displacement efficiency reduce.
Summary of the invention
The object of the present invention is to provide the cation Gemini surfactant that can be used as oil-displacing agent, it uses separately, need not add alkali, thereby the stratum there is not injury, and stable performance, have good reduction oil/water termination tensile ability, can guarantee that in the scope of broad crude oil/water has ultra low interfacial tension, and overcome the oil displacement efficiency decline that existing oil-displacing agent causes because of the chromatographic separation phenomenon.
For achieving the above object, the invention provides following technical scheme.
The present invention is a cationoid Gemini surface active agent, and m-s-m represents with code name, and wherein m represents the carbonatoms of tensio-active agent alkyl, and the s representative connects basic carbonatoms.Its structural formula is as follows:
s＝2，3，4，5，6????m＝10，12，14，16，18
Such tensio-active agent is a white solid, belongs to quaternary ammonium salt cationic surfactant, and solvability is fine in water.On the scientific and technical literature introduction of this tensio-active agent is arranged at home and abroad at present, but also do not have this surfactant product to sell at home and abroad.Therefore, preparation method's brief introduction of this class tensio-active agent is as follows, two kinds of methods are wherein arranged:
1) method A
2) method B
Annotate: wherein during s=2, method A is better
This reaction is raw materials used: a bromoalkane, and homemade, chemical pure, colourless liquid, commercially available; The tetramethyl-alkyl diamine, homemade, chemical pure, colourless liquid, commercially available; Alkyl dimethyl amine, homemade, industrial goods, colourless liquid, commercially available; α, ω-two bromoalkane, homemade, chemical pure, colourless liquid, commercially available.
As a kind of chemical oil displacement agent that is used for tertiary oil recovery, this cation Gemini surfactant connects basic carbonatoms and is respectively 2,3,4,5,6, and the alkyl carbon atoms number is respectively 10,12, and 14,16,18.This oil-displacing agent can reach ultra low interfacial tension with crude oil under the situation of exogenously added alkali not, this oil-displacing agent both can use separately, also can be composite with its homologue Gemini surface active agent, and its compound proportion is 0～100 quality %.
This oil-displacing agent can also be composite with cats product, and cats product can be a quaternary ammonium salt surface active agent, and its compound proportion is 10～90 quality %.
This oil-displacing agent can also be composite with nonionogenic tenside, nonionogenic tenside can be fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, aliphatic acid polyethenoxy ether ester and polyhydric alcohol fatty acid ester Soxylat A 25-7, and its compound proportion is 10～90 quality %.
According to the situation of prescription provided by the present invention and formation crude oil, can be combined into the component of various ratios.Using method adopts the perfusion of common tertiary oil recovery, and the add-on of chemical agent is below 0.5% of the water yield.
Compared with prior art, effect of the present invention and benefit are:
(1) oil-displacing agent provided by the present invention can reach ultralow oil/water termination tension force in bigger concentration range when auxiliary agent such as exogenously added alkali does not use separately, thereby has avoided the injury of alkali to the stratum, helps the Sustainable development of oil production;
(2) the present invention much smaller than present oil-displacing agent consumption and do not need under the situation of auxiliary agents such as exogenously added alkali, just can reach ultralow oil water interfacial tension at consumption, has reduced displacement of reservoir oil cost widely;
(3) the present invention forms comparatively singlely, can overcome the chromatographic separation effect to a certain extent and the decline of the oil displacement efficiency that causes;
(4) oil-displacing agent of the present invention is a cationic surfactant, has avoided the commutative polyvalent ion in sulfonate surfactant and the stratum to form the injury of precipitation to the stratum.
Embodiment
Actual measurement condition 1:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. oil-displacing agent is formed: 16-3-16
Result such as following table:
| Oil-displacing agent concentration (w%) | Interfacial tension mN/m between crude oil/local water |
| ????0.0007 | ????45.4 |
| ????0.0058 | ????0.00868 |
| ????0.0311 | ????0.00977 |
| ????0.0492 | ????0.00912 |
| ????0.0998 | ????0.00088 |
| ????0.2000 | ????0.000018 |
| ????0.2960 | ????0.00041 |
| ????0.5908 | ????0.00591 |
Actual measurement condition 2:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. oil-displacing agent is formed: 12-2-12 (50%)+16-4-16 (50%)
Result such as following table:
| Oil-displacing agent concentration (w%) | Interfacial tension mN/m between crude oil/local water |
| ????0.001 | ????47.32 |
| ????0.005 | ????0.0120 |
| ????0.010 | ????0.0073 |
| ????0.050 | ????0.00232 |
| ????0.100 | ????0.00089 |
| ????0.200 | ????0.00026 |
| ????0.300 | ????0.00097 |
Actual measurement condition 3:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. oil-displacing agent is formed: main component (w%):
12-3-12????????????????25％
14-2-14????????????????25％
16-4-16????????????????25％
18-6-18????????????????25％
Result such as following table:
| Oil-displacing agent concentration (w%) | Interfacial tension mN/m between crude oil/local water |
| ????0.010 | ????0.0072 |
| ????0.030 | ????0.0041 |
| ????0.050 | ????0.0018 |
| ????0.100 | ????0.00095 |
| ????0.200 | ????0.00046 |
Actual measurement condition 4:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. oil-displacing agent is formed: main component (w%):
14-3-14?????????????????20％
16-3-16?????????????????20％
18-3-18?????????????????10％
Cetyl trimethylammonium bromide 50%
Result such as following table:
| Oil-displacing agent concentration (w%) | Interfacial tension mN/m between crude oil/local water |
| ????0.030 | ????0.0084 |
| ????0.050 | ????0.0045 |
| ????0.100 | ????0.0021 |
| ????0.200 | ????0.0015 |
| ????0.300 | ????0.0026 |
Actual measurement condition 5:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. oil-displacing agent is formed: main component (w%):
10-4-10????????????????10％
12-4-12????????????????20％
16-4-16????????????????20％
Polyoxyethylene nonylphenol ether 50%
Result such as following table:
| Oil-displacing agent concentration (w%) | Interfacial tension mN/m between crude oil/local water |
| ????0.030 | ????0.0091 |
| ????0.050 | ????0.0063 |
| ????0.100 | ????0.0052 |
| ????0.200 | ????0.0043 |
| ????0.300 | ????0.0057 |
By above actual measurement as can be seen, the present invention all has good reduction oil/water termination tensile ability under the extremely low chemical agent concentration and in the chemical agent concentration scope at broad.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101107173A CN1528853A (en) | 2003-10-09 | 2003-10-09 | Cationic Gemini Surfactants as Oil Displacing Agents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101107173A CN1528853A (en) | 2003-10-09 | 2003-10-09 | Cationic Gemini Surfactants as Oil Displacing Agents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1528853A true CN1528853A (en) | 2004-09-15 |
Family
ID=34304699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101107173A Pending CN1528853A (en) | 2003-10-09 | 2003-10-09 | Cationic Gemini Surfactants as Oil Displacing Agents |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1528853A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363096C (en) * | 2005-12-02 | 2008-01-23 | 西南石油学院 | A kind of gemini surfactant and synthetic method thereof |
| CN100400618C (en) * | 2006-05-24 | 2008-07-09 | 西南石油大学 | Hydrophobic and lipophilic treatment agent for formation near wellbore zone and preparation method thereof |
| CN100425317C (en) * | 2005-04-12 | 2008-10-15 | 中国科学院化学研究所 | Demulsifier |
| CN101845295A (en) * | 2010-05-24 | 2010-09-29 | 湖北汉科新技术股份有限公司 | Drilling fluid tackifier favorable for protecting oil-gas layers |
| CN102309945A (en) * | 2010-07-05 | 2012-01-11 | 深圳市美凯特科技有限公司 | A kind of multi-component surfactant and preparation method thereof |
| CN102319550A (en) * | 2011-07-08 | 2012-01-18 | 中国林业科学研究院林产化学工业研究所 | Low-concentration viscoelastic surfactant solution and preparation method thereof |
| CN102329608A (en) * | 2011-07-25 | 2012-01-25 | 天津科技大学 | Microemulsion for improving core wettability |
| CN101711959B (en) * | 2009-11-19 | 2012-02-01 | 蚌埠丰原医药科技发展有限公司 | Polymerizable ester-group Gemini cation gemini surfactant and preparation method thereof |
| CN102373044A (en) * | 2010-08-23 | 2012-03-14 | 中国石油化工股份有限公司 | Oil displacement method suitable for MgCl2 water-type oil displacement agent |
| CN101766973B (en) * | 2009-01-07 | 2012-06-13 | 湖北大学 | Symmetric cationic surfactant and preparation method thereof |
| CN102653685A (en) * | 2012-04-06 | 2012-09-05 | 西南石油大学 | Biquaternary ammonium salt type demulsifying agent for crude oil produced liquid and preparation method for demulsifying agent |
| CN102952566A (en) * | 2011-08-18 | 2013-03-06 | 中国石油化工股份有限公司 | Dehydration method of oilfield produced fluid |
| CN103173197A (en) * | 2013-03-05 | 2013-06-26 | 西北大学 | Gemini surfactant, preparation method thereof, and application thereof in tertiary oil recovery |
| CN104277818A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Drag reducer for fracturing fluid and application thereof |
| CN106350048A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Oil washing agent for oil well fracturing as well as preparation method and application of oil washing agent |
| CN109111906A (en) * | 2018-09-19 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of emulsifying and viscosity-reducing agent for condensed oil |
| CN109135709A (en) * | 2018-09-19 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of viscosity reduction oil displacement agent and oil displacement system suitable for heavy crude reservoir |
| CN109231232A (en) * | 2018-11-07 | 2019-01-18 | 太原理工大学 | Micro--meso-hole structure Beta molecular sieve, micro--mesoporous Beta molecular sieve catalyst of Ni base and preparation method thereof |
| CN112457834A (en) * | 2019-09-06 | 2021-03-09 | 中国石油天然气股份有限公司 | Gemini cationic surfactant and preparation method and application thereof |
| CN116589995A (en) * | 2022-12-28 | 2023-08-15 | 陕西邦达诺环保科技有限公司 | Multi-type-nonionic oil film stripping agent and preparation method thereof |
| CN117701267A (en) * | 2024-02-06 | 2024-03-15 | 新疆光亚油气新技术发展有限公司 | A surfactant system for reducing pressure and increasing injection in low-permeability oil fields and its preparation method |
-
2003
- 2003-10-09 CN CNA2003101107173A patent/CN1528853A/en active Pending
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425317C (en) * | 2005-04-12 | 2008-10-15 | 中国科学院化学研究所 | Demulsifier |
| CN100363096C (en) * | 2005-12-02 | 2008-01-23 | 西南石油学院 | A kind of gemini surfactant and synthetic method thereof |
| CN100400618C (en) * | 2006-05-24 | 2008-07-09 | 西南石油大学 | Hydrophobic and lipophilic treatment agent for formation near wellbore zone and preparation method thereof |
| CN101766973B (en) * | 2009-01-07 | 2012-06-13 | 湖北大学 | Symmetric cationic surfactant and preparation method thereof |
| CN101711959B (en) * | 2009-11-19 | 2012-02-01 | 蚌埠丰原医药科技发展有限公司 | Polymerizable ester-group Gemini cation gemini surfactant and preparation method thereof |
| CN101845295A (en) * | 2010-05-24 | 2010-09-29 | 湖北汉科新技术股份有限公司 | Drilling fluid tackifier favorable for protecting oil-gas layers |
| CN101845295B (en) * | 2010-05-24 | 2013-01-09 | 湖北汉科新技术股份有限公司 | Drilling fluid tackifier favorable for protecting oil-gas layers |
| CN102309945A (en) * | 2010-07-05 | 2012-01-11 | 深圳市美凯特科技有限公司 | A kind of multi-component surfactant and preparation method thereof |
| CN102309945B (en) * | 2010-07-05 | 2012-12-19 | 深圳市美凯特科技有限公司 | Multi-component surfactant and preparation method thereof |
| CN102373044A (en) * | 2010-08-23 | 2012-03-14 | 中国石油化工股份有限公司 | Oil displacement method suitable for MgCl2 water-type oil displacement agent |
| CN102373044B (en) * | 2010-08-23 | 2013-07-31 | 中国石油化工股份有限公司 | Oil displacement method suitable for MgCl2 water-type oil displacement agent |
| CN102319550B (en) * | 2011-07-08 | 2014-01-22 | 中国林业科学研究院林产化学工业研究所 | Low-concentration viscoelastic surfactant solution and preparation method thereof |
| CN102319550A (en) * | 2011-07-08 | 2012-01-18 | 中国林业科学研究院林产化学工业研究所 | Low-concentration viscoelastic surfactant solution and preparation method thereof |
| CN102329608B (en) * | 2011-07-25 | 2013-10-23 | 天津科技大学 | A Microemulsion for Improving Rock Core Wetting Performance |
| CN102329608A (en) * | 2011-07-25 | 2012-01-25 | 天津科技大学 | Microemulsion for improving core wettability |
| CN102952566A (en) * | 2011-08-18 | 2013-03-06 | 中国石油化工股份有限公司 | Dehydration method of oilfield produced fluid |
| CN102952566B (en) * | 2011-08-18 | 2014-12-31 | 中国石油化工股份有限公司 | Dehydration method of oilfield produced fluid |
| CN102653685A (en) * | 2012-04-06 | 2012-09-05 | 西南石油大学 | Biquaternary ammonium salt type demulsifying agent for crude oil produced liquid and preparation method for demulsifying agent |
| CN103173197B (en) * | 2013-03-05 | 2015-07-08 | 西北大学 | Gemini surfactant, preparation method thereof, and application thereof in tertiary oil recovery |
| CN103173197A (en) * | 2013-03-05 | 2013-06-26 | 西北大学 | Gemini surfactant, preparation method thereof, and application thereof in tertiary oil recovery |
| CN104277818A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Drag reducer for fracturing fluid and application thereof |
| CN106350048B (en) * | 2016-07-22 | 2019-06-14 | 北京斯迪莱铂油气技术有限公司 | A kind of wellfracturing detergent and its preparation method and application |
| CN106350048A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Oil washing agent for oil well fracturing as well as preparation method and application of oil washing agent |
| CN109111906A (en) * | 2018-09-19 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of emulsifying and viscosity-reducing agent for condensed oil |
| CN109135709A (en) * | 2018-09-19 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of viscosity reduction oil displacement agent and oil displacement system suitable for heavy crude reservoir |
| CN109111906B (en) * | 2018-09-19 | 2020-10-13 | 中国石油化工股份有限公司 | Thick oil emulsifying viscosity reducer |
| CN109135709B (en) * | 2018-09-19 | 2020-10-13 | 中国石油化工股份有限公司 | Viscosity-reducing oil displacement agent and oil displacement system suitable for heavy oil reservoir |
| CN109231232A (en) * | 2018-11-07 | 2019-01-18 | 太原理工大学 | Micro--meso-hole structure Beta molecular sieve, micro--mesoporous Beta molecular sieve catalyst of Ni base and preparation method thereof |
| CN112457834A (en) * | 2019-09-06 | 2021-03-09 | 中国石油天然气股份有限公司 | Gemini cationic surfactant and preparation method and application thereof |
| CN112457834B (en) * | 2019-09-06 | 2022-12-02 | 中国石油天然气股份有限公司 | Gemini cationic surfactant and preparation method and application thereof |
| CN116589995A (en) * | 2022-12-28 | 2023-08-15 | 陕西邦达诺环保科技有限公司 | Multi-type-nonionic oil film stripping agent and preparation method thereof |
| CN117701267A (en) * | 2024-02-06 | 2024-03-15 | 新疆光亚油气新技术发展有限公司 | A surfactant system for reducing pressure and increasing injection in low-permeability oil fields and its preparation method |
| CN117701267B (en) * | 2024-02-06 | 2024-05-14 | 新疆光亚油气新技术发展有限公司 | Pressure-reducing and injection-increasing surfactant system for low-permeability oil field and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1528853A (en) | Cationic Gemini Surfactants as Oil Displacing Agents | |
| CN1814692A (en) | Carboxyl-betaine and sulfosalt surfactant formula system and use in the third oil-production | |
| CN102464598B (en) | Fatty acid amide polyoxylethylene ether benzene sulfonate and preparation method thereof | |
| CN101029224A (en) | Use of bi-alkyl carboxylate surface activator in triple oil recovery | |
| CN101073757A (en) | Asymmetric Gemini surfactant and preparation method and application thereof | |
| CN1202202C (en) | Reducing viscosity agent by emulsification for thick oil and application method thereof | |
| CN109135709B (en) | Viscosity-reducing oil displacement agent and oil displacement system suitable for heavy oil reservoir | |
| CN103666430A (en) | Surfactant composition for intensifying oil extraction and preparation method thereof | |
| CN101054514A (en) | Alkylaniline carboxylate or sulphonate surfactant | |
| CN1699499A (en) | Low-molecular environmentally-friendly fracturing fluid and use of recovery liquid thereof | |
| CN111218268B (en) | Slickwater for compact sandstone reservoir and preparation method thereof | |
| CN104449633B (en) | Crude oil surfactant and preparation method and application thereof | |
| CN1131293C (en) | Oil-displacing surfactant system for increasing recovery ratio of crude | |
| CN112175597A (en) | Well-flushing foam water shutoff agent and preparation method thereof | |
| CN1818008A (en) | Oil-displacing agent and production thereof | |
| CN1131292C (en) | Surfactant composition for increasing recovery ratio of crude and its application | |
| CN1241610A (en) | Chemical agent for intensified oil production | |
| CN1090314A (en) | High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof | |
| CN1137246C (en) | Condensed oil emulsifying and viscosity reducing method | |
| CN1216120C (en) | Ternary composite oil displacement system of plant carboxylic acid surfactant and application thereof | |
| CN113429954A (en) | Oil-displacing surfactant system, and preparation method and application thereof | |
| CN1233783C (en) | Novel crude oil drag reduction and viscosity reducing agent | |
| CN1730144A (en) | Carboxylate Surfactant, Its Formulation System and Its Application in Tertiary Oil Recovery | |
| CN1123620C (en) | Three-element built-up composition containing lignosulfonate surfactant and its application in tertiary petroleum recovery | |
| CN1204225C (en) | Crude oil flowability improver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |