CN101445722B - Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof - Google Patents
Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof Download PDFInfo
- Publication number
- CN101445722B CN101445722B CN2008102462118A CN200810246211A CN101445722B CN 101445722 B CN101445722 B CN 101445722B CN 2008102462118 A CN2008102462118 A CN 2008102462118A CN 200810246211 A CN200810246211 A CN 200810246211A CN 101445722 B CN101445722 B CN 101445722B
- Authority
- CN
- China
- Prior art keywords
- oil
- surfactant
- water
- sulfonate
- displacement agent
- 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.)
- Expired - Fee Related
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to an oil displacement agent suitable for surfactant for low-permeability oilfield, and a preparation method thereof, which belongs to the chemical-flooding field for improving the oil recovery factor of the oil pool. The oil displacement agent mainly comprises the component of heavy alkylbenzene sulfonate or alpha-alkene sulfonate, and the heavy alkylbenzene sulfonate or the alpha-alkene sulfonate is matched with sulfonate Gemini type surfactant, nonionic surfactant, organic solvent and water to form a mixed system. Compared with the prior art, the invention has the advantages that the oil solubility of the efficient compound oil displacement agent is good, the service temperature is high, no influence exists in the oilfield and the oil pool, and the tension of the oil water interface can be effectively reduced at higher temperature (80 DEG C) and reaches 10<-3>mN/m; and the bivariate compound displacement system formed with the polymer can increase the recovery ratio by above 20 percent of OOIP and has broad application prospect.
Description
Technical field
The present invention relates to a kind of oil-displacing agent and preparation method thereof.
Background technology
China's onshore oil field has passed through the exploitation of decades, and most of oil fields have entered the ultra-high water-containing stage, and composite water cut is more than 90%, and field test and industrial applications that domestic each elephant has generally been carried out tertiary oil recovery have obtained remarkable achievement.In the method for carrying out tertiary oil recovery, present main means are polymer flooding, and its amplification that improves recovery ratio is more than 10%OOIP.In addition, surfactant flooding is also just in promotion and application.Because polymer flooding mainly is applicable to the middle and high infiltration oil field, the oil-field structure of its use is restricted, and just can't use low pressure and low permeability oil field and viscous crude field.Therefore, surfactant flooding (comprising tensio-active agent/polymkeric substance binary combination flooding) etc. more and more comes into one's own.It is a kind of improving the technological method of oil displacement efficiency using tensio-active agent, by composite with polymkeric substance etc., oil water interfacial tension can be reduced to 10
-3The mN/m order of magnitude, thus oil displacement efficiency and sweep efficiency improved, and recovery ratio amplification can reach more than the 20%OOIP.This is the developing direction of at present domestic and international tertiary oil recovery.Therefore, each elephant sharply increases for the demand of tensio-active agent.
At present, using more oil-displacing agent main body auxiliary agent on the oil field is petroleum sulfonate surfactant, but considers that the required primary technical requirements of oil-displacing agent is exactly that oil/water termination tension force obtains 1 * 10 because the production cost in condition and oil field is hidden on complicated ground
-3MN/m, sulfonated petro-leum generally can only reduce oil/water termination tension force to 1 * 10
-2The mN/m order of magnitude can not get the requirement of the required super oil water interfacial tension of the displacement of reservoir oil.And traditional oil-displacing agent is in order to pursue low oil water interfacial tension, do not pay attention to reservoir geology and crude oil property condition, a certain amount of alkali (NaOH) or polymkeric substance have been added, because alkali (NaOH) or polymkeric substance are adsorbed in the stratum in a large number, stopped up the duct, stratum, cause the destruction of stratal configuration, brought great difficulty for further exploiting.
In recent years, surfactant system displacement of reservoir oil method is in the attention that has caused people aspect the raising oil recovery factor.A large amount of research work have had been found that many new, effective tensio-active agents, 1999, the Zhao Jianxi of Fujian university (Zhao Jianxi. tensio-active agent of new generation: Geminis, chemical progress, 1999,11 (4): one piece of article about external Gemini tensio-active agent progress 348-357) delivering has caused China this area research personnel's extensive concern and very big interest.China has reported that such tensio-active agent of synthetic concentrates on mostly to (Chen Hong in the research of diquaternary amine salt ion type tensio-active agent at present, Han Lijuan, the Asia, Luoping. can be used as the cation Gemini surfactant of oil-displacing agent, 200310110717.3), really use at low-permeability oilfield, oil water interfacial tension reaches 10
-3The oil-displacing agent of the mN/m order of magnitude awaits further to research and develop.Therefore, in numerous tensio-active agent kinds, it is very necessary that a kind of sulfonate Gemini type tensio-active agent that is very useful in surfactant system is provided.
In sum, a kind of inexpensive efficient, functional, stable strong oil-displacing agent system of needs satisfies the low-permeability oilfield used for tertiary oil recovery, oil water interfacial tension reaches 10
-3The requirement of the mN/m order of magnitude.
Summary of the invention
The purpose of this invention is to provide a kind of raw material be easy to get, inexpensive, be suitable for suitability for industrialized production, and the product oil displacement efficiency that makes is good, and (oil water interfacial tension reaches 10
-3The mN/m order of magnitude), high surfactant for low-permeability oilfield oil-displacing agent and preparation method thereof that is suitable for of stability.
Technical scheme of the present invention is as follows:
A kind of surfactant for low-permeability oilfield oil-displacing agent that is suitable for is characterized in that the weight percent of its each component is:
Heavy alkylbenzene sulfonate or sulfonated 38-70%
Anionic sulphonate Gmini type tensio-active agent 5-8%
Nonionogenic tenside 5-15%
Organic solvent 2-5%
Water 18-50%
Described anionic sulphonate Gmini type tensio-active agent is 5,5 '-dinonyl-2,2 '-(glycol ether oxygen base) two benzene sulfonates, 5,5 '-dinonyl-2,2 '-(Triethylene glycol oxygen base) two benzene sulfonates or 5,5 '-dinonyl-2,2 '-a kind of or its any mixture in (tetraethylene-glycol oxygen base) two benzene sulfonates;
Nonionogenic tenside is one or more the mixture in the poly-oxyethylene ether of nonyl phenol, sorbitan fatty acid ester, the sorbitol polyoxyethylene ether;
Organic solvent is one or more mixtures in Virahol, propyl carbinol, the isopropylcarbinol.
The described surfactant for low-permeability oilfield oil-displacing agent that is suitable for, it is characterized in that: the weight percent of the optimization of its each component is:
Heavy alkylbenzene sulfonate or sulfonated 40-45%
Anionic sulphonate Gmini type tensio-active agent 5-6%
Nonionogenic tenside 5-10%
Organic solvent 2-4%
Water 40-50%.
The described surfactant for low-permeability oilfield oil-displacing agent that is suitable for is characterized in that may further comprise the steps:
(1), at normal temperatures and pressures, anionic sulphonate Gmini type tensio-active agent, nonionogenic tenside, organic solvent are added reactor, fully stirred 1-3 hour;
(2) 50% of Total Water is added reactor, stirred 0.5-2 hour, add remaining 50% water and whole organic solvent again, be stirred to evenly, form auxiliary agent;
(3), at last will weigh alkyl sulfonate or sulfonated and add reactor, and mix with auxiliary agent and promptly get the oil-displacing agent finished product.
In above-mentioned oil-displacing agent component, heavy alkylbenzene sulfonate, sulfonated are tensio-active agent host,, add that anionic sulphonate Gmini type tensio-active agent and some kinds of nonionogenic tensides become the oil-displacing agent of using at low-permeability oilfield as additive compound.This oil-displacing agent series good stability, oil water interfacial tension numerical value reaches 10
-3The mN/m order of magnitude.
Compared with prior art, effect of the present invention and benefit are:
(1), when oil-displacing agent provided by the present invention uses separately at not exogenously added alkali and organic solvent etc., can in bigger concentration range, reach 10
-3The oil of mN/m/water termination tensile ability, thus the injury of alkali avoided to bottom, help the Sustainable development of oil production;
(2), have ultra low interfacial tension, when effective activity concentration was 1500ppm, oil water interfacial tension will reach 1 * 10
-3MN/m, in binary system (polymer concentration 1500ppm), oil water interfacial tension will reach 10
-2The mN/m order of magnitude;
(3), the effective active thing content of product is in 40～50% scopes;
(4), the Heat stability is good of product, when formation temperature was 80 ℃, product did not decompose, property retention is stable;
(5), much smaller than present on-the-spot oil-displacing agent consumption (2/1000ths five to 3/1000ths), and oil/water termination tension force can reach 10 at consumption in the present invention
-3The order of magnitude of mN/m helps reducing by three production costs of adopting;
(6), the present invention forms comparatively singlely, can avoid the difference because of character in the component to a certain extent, has the chromatographic separation phenomenon in the oil reservoir, makes the ultra-low surface tension that had formed already disappear the deficiency that causes oil displacement efficiency to descend.
The all raw material that uses among the present invention comprises that additive all is conventional, and concentration etc. are the conventional concentration of using, and can buy from market.
Embodiment
Further specify the present invention below by concrete preparation embodiment and experimental example.
Embodiment 1:
Raw material:
Heavy alkylbenzene sulfonate 40kg, polyoxyethylene nonylphenol ether 8kg, sorbitol polyoxyethylene ether 10kg, sulfonate Gmini type tensio-active agent 10kg, propyl carbinol 2kg, water 30kg.
Preparation process:
(1), at normal temperatures and pressures, at normal temperatures and pressures, anionic sulphonate Gmini type tensio-active agent, nonionogenic tenside, organic solvent are added reactor, fully stirred 3 hours;
(2), 50% of Total Water is added reactor, stirred 2 hours, add remaining water and whole organic solvent, be stirred to evenly the formation auxiliary agent;
(3), at last heavy alkylbenzene sulfonate is added reactor, mix with auxiliary agent and promptly get the oil-displacing agent finished product.
Product is carried out the test of interfacial tension
1. testing tool: interfacial tensimeters (SY/T5370-1999) are dripped in 510 rotations
2. temperature: 50 ℃
3. crude oil: experimental standard crude oil (oil field producer provides)
4. water: local water (oil field producer provides)
5. oil-displacing agent is formed: main component (w%): implementation condition 1
Result such as following table:
Embodiment 2:
Raw material:
Sulfonated 40kg, polyoxyethylene nonylphenol ether 8kg, sorbitol polyoxyethylene ether 10kg, sulfonate Gmini type tensio-active agent 10kg, propyl carbinol 2kg, water 30kg.
Preparation process:
(1), at normal temperatures and pressures, at normal temperatures and pressures, anionic sulphonate Gmini type tensio-active agent, nonionogenic tenside, organic solvent are added reactor, fully stirred 3 hours;
(2), 50% of Total Water is added reactor, stirred 2 hours, add remaining water and whole organic solvent, be stirred to evenly the formation auxiliary agent;
(3), at last sulfonated is added reactor, mix with auxiliary agent and promptly get the oil-displacing agent finished product.
Product is carried out the test of interfacial tension
1. testing tool: interfacial tensimeters (SY/T5370-1999) are dripped in 510 rotations
2. temperature: 80 ℃
3. crude oil: experimental standard crude oil (oil field producer provides)
4. water: local water (oil field producer provides)
5. oil-displacing agent is formed: main component (w%): implementation condition 2
Result such as following table:
By above experimental data as can be seen, chemical agent concentration provided by the present invention is under 3/1000ths conditions, and promptly effective active concentration is 1500ppm, and in the chemical agent concentration scope of broad, has to reach 1.1 * 10
-3The oil of mN/m/water termination tensile ability, thus oil recovery factor improved.There is not secondary pollution in this auxiliary agent in addition.
Claims (1)
1. one kind is suitable for the surfactant for low-permeability oilfield oil-displacing agent, it is characterized in that the part by weight of its each component is: heavy alkylbenzene sulfonate 40kg, polyoxyethylene nonylphenol ether 8kg, sorbitol polyoxyethylene ether 10kg, anionic sulphonate Gemini type tensio-active agent 10kg, propyl carbinol 2kg, water 30kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102462118A CN101445722B (en) | 2008-12-30 | 2008-12-30 | Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102462118A CN101445722B (en) | 2008-12-30 | 2008-12-30 | Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101445722A CN101445722A (en) | 2009-06-03 |
| CN101445722B true CN101445722B (en) | 2011-10-05 |
Family
ID=40741603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102462118A Expired - Fee Related CN101445722B (en) | 2008-12-30 | 2008-12-30 | Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101445722B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684406B (en) * | 2009-07-28 | 2013-03-06 | 陕西华泽实业有限公司 | Anti-salt temperature-resistant high-efficient oil-displacing agent applicable to low pressure and low permeability and preparation method thereof |
| CN102191030B (en) * | 2010-03-19 | 2013-10-16 | 中国石油天然气股份有限公司 | Oil-displacing surfactant and preparation method thereof |
| CN101885963B (en) * | 2010-07-05 | 2013-04-03 | 赵景瑞 | High-efficiency oil displacement agent |
| CN102373053B (en) * | 2010-08-23 | 2015-08-12 | 中国石油化工股份有限公司 | Foaming agent combination and uses thereof |
| CN103031123B (en) * | 2011-09-29 | 2014-11-26 | 中国石油化工股份有限公司 | Foaming agent composition for tertiary oil recovery and application thereof |
| CN103045221B (en) * | 2011-10-17 | 2015-01-21 | 中国石油天然气股份有限公司 | Surfactant oil displacement system and application thereof |
| CN103374341B (en) * | 2012-04-13 | 2016-03-09 | 中国石油天然气股份有限公司 | Preparation and application of gemini amphiphilic surfactant |
| CN102766448B (en) * | 2012-07-12 | 2016-08-03 | 天津市瑞德赛恩新材料开发有限公司 | A kind of foam flooding oil preparation |
| CN102876313B (en) * | 2012-10-26 | 2014-07-30 | 四川光亚聚合物化工有限公司 | Hydrophobically associated polymer-composite surfactant binary combination flooding system and method |
| CN104449644A (en) * | 2014-05-24 | 2015-03-25 | 濮阳市新庆石油科技有限公司 | Activator capable of initiating and regulating electric attraction among chemical molecules and preparation method thereof |
| CN104017555B (en) * | 2014-06-07 | 2017-01-04 | 林南平 | A kind of alkali-free hyposmosis displacing surfactant system and preparation method thereof, application |
| CN104017554B (en) * | 2014-06-07 | 2016-08-24 | 西北大学 | A kind of complexed surfactant oil displacement system and preparation method thereof, application |
| CN105403557B (en) * | 2015-10-23 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of screening technique of oil recovery composite microorganism oil-displacing agent |
| CN107629778B (en) * | 2017-11-01 | 2020-06-23 | 南阳理工学院 | Gemini composite surfactant for oil displacement and preparation method thereof |
| CN107674667B (en) * | 2017-11-05 | 2020-04-03 | 青岛大学 | Temperature-resistant high-calcium magnesium salt-resistant surfactant compound system |
| CN109233779A (en) * | 2017-11-20 | 2019-01-18 | 北京鸿威石油工程技术服务有限公司 | A kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof improving oil recovery factor |
| CN109111909B (en) * | 2018-10-11 | 2021-02-02 | 中国石油化工股份有限公司 | Micro-power emulsified phase permeation regulating profile control agent and preparation method thereof |
| CN116376531A (en) * | 2023-04-17 | 2023-07-04 | 山西潞安煤基清洁能源有限责任公司 | Self-emulsifying ultralow interfacial tension oil displacement agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423199A (en) * | 1982-09-30 | 1983-12-27 | Rohm And Haas Company | Acrylamide containing emulsion copolymers for thickening purposes |
| CN1228412C (en) * | 2003-11-28 | 2005-11-23 | 东营市芳华石化科技有限责任公司 | Preparation method of CO2-N2 composite foam synergist for improving thick oil heat gathering effect |
| CN1782019A (en) * | 2004-12-01 | 2006-06-07 | 中国石油天然气股份有限公司 | Alkyl benzene sulfonate composition and preparation method thereof |
| CN101037593A (en) * | 2007-04-18 | 2007-09-19 | 西南石油大学 | Method for avoiding adsorption of oil displacement surfactant by strata rock |
-
2008
- 2008-12-30 CN CN2008102462118A patent/CN101445722B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423199A (en) * | 1982-09-30 | 1983-12-27 | Rohm And Haas Company | Acrylamide containing emulsion copolymers for thickening purposes |
| CN1228412C (en) * | 2003-11-28 | 2005-11-23 | 东营市芳华石化科技有限责任公司 | Preparation method of CO2-N2 composite foam synergist for improving thick oil heat gathering effect |
| CN1782019A (en) * | 2004-12-01 | 2006-06-07 | 中国石油天然气股份有限公司 | Alkyl benzene sulfonate composition and preparation method thereof |
| CN101037593A (en) * | 2007-04-18 | 2007-09-19 | 西南石油大学 | Method for avoiding adsorption of oil displacement surfactant by strata rock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101445722A (en) | 2009-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101445722B (en) | Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof | |
| CN102703048B (en) | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof | |
| CN108373912B (en) | Salt-resistant high-temperature-resistant foam scrubbing agent and preparation method thereof | |
| CN103540304B (en) | Surfactant composition for intensified oil production and preparation method thereof | |
| CN104232044B (en) | Surface activator composition, preparation method and application for tertiary oil recovery | |
| CN103666431B (en) | Surfactant composition and preparation method thereof | |
| CN101665685A (en) | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery | |
| CN103740354B (en) | A surfactant composition used for tertiary oil recovery and a preparation method thereof | |
| CN103421480A (en) | Oil displacement surfactant composition and preparation method thereof | |
| CN107603581B (en) | Efficient foam drainage agent composition and preparation method and application thereof | |
| CN1202202C (en) | Reducing viscosity agent by emulsification for thick oil and application method thereof | |
| CN104277814B (en) | Surfactant oil displacement composition, preparation method and application | |
| CN103666430A (en) | Surfactant composition for intensifying oil extraction and preparation method thereof | |
| CN102516064A (en) | Preparation method of nonionic-anionic compound type surfactant and application thereof | |
| CN110819327A (en) | Foam scrubbing agent for resisting high condensate oil and hypersalinity and preparation method thereof | |
| US20220363975A1 (en) | Biological and chemical composite blockage removing agent and preparation process and use thereof | |
| CN111154475A (en) | Oil displacement agent for reducing interfacial tension of high-wax-content crude oil and preparation method and application thereof | |
| CN101735794B (en) | Additive for improving wettability of pulverized coal | |
| CN101284987A (en) | High active oil-displacing agent | |
| CN102732241A (en) | Easily degradable alkali-free viscosity reducer for thick oil and preparation method thereof | |
| Lu et al. | Progress in research of sulfobetaine surfactants used in tertiary oil recovery | |
| CN112266776B (en) | Surfactant for oil displacement and preparation method thereof | |
| CN102277149B (en) | Low-permeability oil field surfactant oil displacement agent | |
| CN107916098A (en) | Displacement of reservoir oil Surfactant Used in Viscoelastic Fracturing Fluids composition and its preparation method and application | |
| CN1326970C (en) | Oil-displacing agent and production thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20171230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |