CN103045221B - Surfactant flooding system and application thereof - Google Patents
Surfactant flooding system and application thereof Download PDFInfo
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- CN103045221B CN103045221B CN201110315000.7A CN201110315000A CN103045221B CN 103045221 B CN103045221 B CN 103045221B CN 201110315000 A CN201110315000 A CN 201110315000A CN 103045221 B CN103045221 B CN 103045221B
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- sodium sulfonate
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Abstract
The invention relates to a surfactant flooding system and application thereof. The surfactant flooding system comprises the following materials in percentage by weight: 1-4% of sodium petroleum sulfonate, 0.5-1% of isomeric alcohol ethoxylate, 0.5-1% of N,N'-dilauroyl-ethylenediamine-sodium diethanesulfonate, 1-4% of organic cosolvent isopropanol and the balance of water, and the sum of the weight percents of all the materials is 100%. In the wide concentration range (0.1-0.5%) of the surfactant, the oil-water interfacial tension can be reduced to an ultralow value at such order of magnitude as 10<-3> mN/m, the field experiment effect is remarkable, and the system is resistant to temperature (80 DEG C) and can be slightly influenced by the change of temperature.
Description
Technical field
The invention belongs to the chemical flooding field of improving oil deposil erude petroleum recovery ratio, relate to the surfactant system of tertiary oil recovery.
Background technology
Along with the prolongation of development time, most domestic oil field enters development late stage, and water drive control is low, and generally also have the irreducible oil of more than 50% after water drive in oil reservoir, therefore, the application of tertiary oil recovery technology obtains paying attention to more and more widely.Reducing interfacial tension is the sole mode forcing the irreducible oil flowing be trapped in porous medium, and be also the effective ways that can increase substantially oil recovery rate, oil water interfacial tension must be reduced to 10 by oil-displacing agent
-3the order of magnitude of mN/m or lower, otherwise without practical value.Because simple tensio-active agent is difficult to water-oil interface to be reduced to 10
-3below mN/m, surfactant system conventional in the past, as alkali, surfactant and polymer (ASP) ternary composite driving, foam composite flooding etc., in three-component compound system technology, because the existence of alkali produces the series of problems such as fouling, clay swelling, water sensitivity enhancing, thus formation causes larger injury, the serious Sustainable development that have impact on oil.The product amount that tertiary oil recovery has anti-salt, anti-absorption, ultra low interfacial tension can be met, phoenix feathers and unicorn horns especially, and expensive.
Summary of the invention
The object of this invention is to provide a kind of interfacial tension that can effectively reduce between oil phase and displacement aqueous phase, thus reach the Anionic-nonionic surfactant system of displacement of reservoir oil effect of increasing production.
Negatively charged ion, nonionic and anionic gemini surfactant are carried out composite by the present invention by a certain percentage, the tensio-active agent formed can produce ultra low interfacial tension, salt tolerant, anti-absorption, have good emulsifying performance, and price is cheap compared with surfactant finished product on market.
Anionic-nonionic surfactant system of the present invention composition by weight 100%; it is the petroleum sodium sulfonate of 1 ~ 4%; isomery ten polyoxyethylenated alcohol of 0.5 ~ 1%; the N of 0.5 ~ 1%; N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate; 1 ~ 4% organic cosolvent Virahol, all the other are water.
The described anion surfactant petroleum sodium sulfonate with oil displacement efficiency, its molecular formula is: R-SO
3na, R=C
14~ C
18straight-chain aliphatic alkyl;
Described nonionogenic tenside isomery ten polyoxyethylenated alcohol with oil displacement efficiency, its molecular formula is: RO (CH
2cH
2o) 5H, R are isomery ten alcohol;
The described anionic sulphonate Gemini surface active agent N with oil displacement efficiency, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate.Its molecular formula is:
r is C
12h
25.
, reservoir high for formation water salinity is strong, profit flowing than large, crude oil water content high, this surfactant system oil displacement efficiency is remarkable.And formula rate can be adjusted in time according to on-site actual situations, be easy to realize, convenient operation.
Along with most oil field enters the high water-cut development stage in succession, the research of tensio-active agent or its compound system and test is utilized increasingly to increase, the surfactant system injecting oil reservoir can reduce oil water interfacial tension, thus improves oil recovery factor, thus has broad application prospects.
Starting material used in the present invention can be buied from market.
In the wider concentration range that tensio-active agent is 0.1 ~ 0.5%, oil water interfacial tension can be reduced to 10
-3the ultralow value of the mN/m order of magnitude, field experiment Be very effective, and this system heatproof (80 DEG C) are less by influence of temperature change.
Embodiment
Embodiment 1
Prepared by product:
Under normal temperature and pressure, a capacity be add in the reactor of 5L 1% anion surfactant petroleum sodium sulfonate (Panjin Wu Yuan science, industry and trade company limited), add the Virahol of 1%, abundant stirring 30min dissolves completely, add the nonionogenic tenside isomery ten polyoxyethylenated alcohol (LT-601 of 1% more successively, Shanghai Boyihe Chemical Industry Co., Ltd.), the anionic sulphonate Gemini surface active agent N of 1%, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate (Gemini, Xi'an Chulongda Industry Co., Ltd.), stir, finally add water stirring 1h and namely obtain displacement of reservoir oil product.
Interfacial tension is tested:
1, testing tool: TX500TM full-automatic rotating drips interfacial tensimeter
2, temperature: 60 DEG C
3, crude oil: long 6 layers of crude oil
4, water: inject water
5, oil-displacing agent composition: Anionic-nonionic surfactant system
Surfactant concentration is on the impact (60 DEG C) of solution interface tension force
Rig-site utilization:
Condition of production change before and after L77-35 well filling surfactant
L77-35 well filling tensio-active agent after 3 months, water ratio reduces by 4.7%, day produce oil on average increase 0.77t/d, measure is effective.
Embodiment 2
Prepared by product:
Under normal temperature and pressure, a capacity be add in the reactor of 5L 2% anion surfactant petroleum sodium sulfonate (Panjin Wu Yuan science, industry and trade company limited), add the Virahol of 2%, abundant stirring 30min dissolves completely, add the nonionogenic tenside isomery ten polyoxyethylenated alcohol (LT-601 of 1% more successively, Shanghai Boyihe Chemical Industry Co., Ltd.), the anionic sulphonate Gemini surface active agent N of 1%, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate (Gemini, Xi'an Chulongda Industry Co., Ltd.), stir, finally add water stirring 1h and namely obtain displacement of reservoir oil product.
Interfacial tension is tested:
1, testing tool: TX500TM full-automatic rotating drips interfacial tensimeter
2, temperature: 60 DEG C
3, crude oil: long 6 layers of crude oil
4, water: inject water
5, oil-displacing agent composition: Anionic-nonionic surfactant system
Surfactant concentration is on the impact (60 DEG C) of solution interface tension force
Rig-site utilization:
Condition of production change before and after L79-38 well filling surfactant
L79-38 well filling tensio-active agent after 3 months, water ratio reduces by 4.3%, day produce oil on average increase 0.63t/d, measure effect is obvious.
Embodiment 3
Prepared by product:
Under normal temperature and pressure, a capacity be add in the reactor of 5L 3% anion surfactant petroleum sodium sulfonate (Panjin Wu Yuan science, industry and trade company limited), add the Virahol of 3%, abundant stirring 30min dissolves completely, add the nonionogenic tenside isomery ten polyoxyethylenated alcohol (LT-601 of 0.5% 1% more successively, Shanghai Boyihe Chemical Industry Co., Ltd.), the anionic sulphonate Gemini surface active agent N of 0.5%, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate (Gemini, Xi'an Chulongda Industry Co., Ltd.), stir, finally add water stirring 1h and namely obtain displacement of reservoir oil product.
Interfacial tension is tested:
1, testing tool: TX500TM full-automatic rotating drips interfacial tensimeter
2, temperature: 60 DEG C
3, crude oil: long 6 layers of crude oil
4, water: inject water
5, oil-displacing agent composition: Anionic-nonionic surfactant system
Table 1 surfactant concentration is on the impact (60 DEG C) of solution interface tension force
Rig-site utilization:
Condition of production change before and after L79-36 well filling surfactant
Water ratio 100% before L79-36 well filling tensio-active agent, without oil offtake, the tensio-active agent after 3 months of annotating, water ratio reduces 9.6%, day produce oil add 0.99t/d, measure effect is obvious.
Embodiment 4
Prepared by product:
Under normal temperature and pressure, a capacity be add in the reactor of 5L 4% anion surfactant petroleum sodium sulfonate (Panjin Wu Yuan science, industry and trade company limited), add the Virahol of 4%, abundant stirring 30min dissolves completely, add the nonionogenic tenside isomery ten polyoxyethylenated alcohol (LT-601 of 0.5% more successively, Shanghai Boyihe Chemical Industry Co., Ltd.), the anionic sulphonate Gemini surface active agent N of 0.5%, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate (Gemini, Xi'an Chulongda Industry Co., Ltd.), stir, finally add water stirring 1h and namely obtain displacement of reservoir oil product.
Interfacial tension is tested:
1, testing tool: TX500TM full-automatic rotating drips interfacial tensimeter
2, temperature: 60 DEG C
3, crude oil: long 6 layers of crude oil
4, water: inject water
5, oil-displacing agent composition: Anionic-nonionic surfactant system
Surfactant concentration is on the impact (60 DEG C) of solution interface tension force
Rig-site utilization:
Condition of production change before and after L78-35 well filling surfactant
L78-35 well filling tensio-active agent after 3 months, water ratio reduces 5.7%, day produce oil add 0.76t/d, measure is effective.
Claims (1)
1. a displacing surfactant system application, is characterized in that: this displacing surfactant system is used as tertiary oil recovery surfactant oil displacement, and onsite surface promoting agent the best filling mass concentration is 0.1 ~ 0.5%;
The preparation of displacing surfactant system:
Under normal temperature and pressure; a capacity be in the reactor of 5L by weight 100% add 1% anion surfactant petroleum sodium sulfonate; add the Virahol of 1%; abundant stirring 30min dissolves completely; add nonionogenic tenside isomery ten polyoxyethylenated alcohol of 1% more successively, the anionic sulphonate Gemini surface active agent N of 1%, N '-bimonthly osmanthus Ethylene Diamine diethyl sodium sulfonate; stir, finally add water stirring 1h and namely obtain displacement of reservoir oil product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315000.7A CN103045221B (en) | 2011-10-17 | 2011-10-17 | Surfactant flooding system and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315000.7A CN103045221B (en) | 2011-10-17 | 2011-10-17 | Surfactant flooding system and application thereof |
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| CN103045221A CN103045221A (en) | 2013-04-17 |
| CN103045221B true CN103045221B (en) | 2015-01-21 |
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| CN201110315000.7A Active CN103045221B (en) | 2011-10-17 | 2011-10-17 | Surfactant flooding system and application thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104232046B (en) * | 2013-06-17 | 2017-02-15 | 中国石油化工股份有限公司 | Surface active agent composition for chemical displacement of reservoir oil and preparation method and application thereof |
| CN103657517B (en) * | 2013-10-10 | 2015-08-05 | 李火莲 | Organic silicon-copper emulsifier |
| CN104962274A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Composite surfactant for oil exploitation |
| CN105820273A (en) * | 2015-07-08 | 2016-08-03 | 宁波大学 | Gemini cationic surface active initiator and preparation method thereof |
| CN112280546A (en) * | 2020-12-28 | 2021-01-29 | 山东新港化工有限公司 | Low-tension foam oil washing agent and preparation method and application thereof |
| CN115109575B (en) * | 2022-08-09 | 2023-10-24 | 山东新港化工有限公司 | Low permeability reservoir CO 2 Nanometer foam oil-washing agent for driving and preparation method and application thereof |
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2011
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| US4532053A (en) * | 1982-01-28 | 1985-07-30 | Lion Corporation | Micellar slug for oil recovery |
| US4534411A (en) * | 1982-03-16 | 1985-08-13 | Lion Corporation | Micellar slug for oil recovery |
| US5707940A (en) * | 1995-06-07 | 1998-01-13 | The Lubrizol Corporation | Environmentally friendly water based drilling fluids |
| WO2008118240A1 (en) * | 2007-03-23 | 2008-10-02 | Board Of Regents, The University Of Texas System | Method and system for treating hydrocarbon formations |
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| 马晓梅等.Gemini表面活性剂N,N’一双脂酰基乙二胺.《青岛大学学报(工程技术版)》.2008,第23卷(第4期), * |
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