CN1458219A - Formula of pure binary super low interface tension composite oil-displacement agent of surfactant and pdymer for triple oil production - Google Patents
Formula of pure binary super low interface tension composite oil-displacement agent of surfactant and pdymer for triple oil production Download PDFInfo
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- CN1458219A CN1458219A CN 02117770 CN02117770A CN1458219A CN 1458219 A CN1458219 A CN 1458219A CN 02117770 CN02117770 CN 02117770 CN 02117770 A CN02117770 A CN 02117770A CN 1458219 A CN1458219 A CN 1458219A
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Abstract
The composite oil-displacement agent consists of polymer 0-0.3 wt.%, surfactant 0.05-0.6 wt% and water 99.1-99.95 wt%, and is produced in kettle reactor with coagulated petroleum fraction from raw oil. It has surfactant concentration not higher than available systems, high interface tension reducing effect and stable performance. The ternary composite oil-displacement agent has no alkali and salt while reaching superlow interface tension and thus no alkali scale formed, no loss in polymer viscosity and viscolerasticity. In the compounding of the composite oil-displacement agent, common sewage may be used and this produces certain environment protection effect.
Description
Relate to the field
The present invention relates to the combination flooding prescription in the oil tertiary oil recovery, specifically, is the pure binary ultra low interfacial tension of a kind of surfactant and polymer of using in tertiary oil recovery combination flooding prescription.
Background technology
Underground crude oil through once with secondary recovery after, most of crude oil still remains in the stratum.Tertiary oil recovery technology is to utilize chemical agent to carry out the technology of intensified oil reduction, combination flooding refers to the complex oil displacing technology that both or three unify among the alkali, surfactant and polymer three, polymkeric substance increases the viscosity of displacing fluid, improve oil/water mobility ratio and intake profile, its visco-elasticity also has certain washing oil effect, tensio-active agent reduces oil/water termination tension force, emulsification and solubilising crude oil; Acidic substance reaction in alkali and the crude oil generates new tensio-active agent on the spot, plays synergistic effect with adding tensio-active agent, reduces oil/water termination tension force to a greater extent.Be to improve the highest a kind of method of recovery ratio, in theory can be with the whole extraction of oil, but alkali found the alkali dirt in actual applications and damaged serious problems such as stratum and holddown, hindered the normal development of this technology.
Existing conventional ternary composite displacement system, the working concentration of its alkali is 1.0～1.5%, but from field test, expose some directly problems of this technology realization industrial applications of restriction, too high as (1) owing to alkali concn, oil reservoir and oil well fouling are badly damaged stratum, and must clean a barrel every 10～15 days, increase oil recovery difficulty and fringe cost, even directly influenced the ordinary production of oil well; (2) not only alkali concn is big, and highly basic commonly used (as NaOH) makes equipment and corrosive pipeline serious; (3) because alkali concn is too high, seriously reduce the viscosity and the visco-elasticity of polymkeric substance, have to improve greatly the working concentration of polymkeric substance for reaching required viscosity, it is many that cost is improved.
Summary of the invention
The object of the present invention is to provide a kind of combination flooding prescription, promptly working concentration, effective concentration scope, interfacial property and the viscosity etc. of the tensio-active agent in the prescription are equal to or are better than the low alkali alkali-free combination flooding prescription of using of high alkali systems in tertiary oil recovery.
The present invention is achieved in that
Fill a prescription its main component and content of the combination flooding of using in the tertiary oil recovery is: (parts by weight)
Polymkeric substance 0～0.3
Tensio-active agent 0.05～0.6
Water 99.1～99.95
The present invention also adopts following technical scheme:
Described polymkeric substance can be polyacrylamide, modified polyacrylamide and xanthan gum (XC) etc.
Described tensio-active agent can be sulfonated petro-leum or be the complexed surfactant that host adds thinner and other surfactant compound with the sulfonated petro-leum that the proportioning of its component is (w/w):
Sulfonated petro-leum 50～100
Alkylsulfonate 0～50
Carboxylate salt 0～50
Alkylaryl sulphonate 0～35
Low-carbon alcohol 0～20
Described sulfonated petro-leum is generated down for 40～60 ℃ at curing temperature through axe formula reactor by decompression two wires (containing) the after cut oil of crude refining.
Described water can be ortho-water, can also be return water.
The invention has the advantages that:
(1) product is made raw material axe formula reactor sulfonation production with the condensed fraction oil of petroleum of crude oil, and production technique and equipment are simple, and raw material is self-produced to be easy to get, and production cost is low;
(2) the tensio-active agent working concentration is not higher than existing system, and it is effective that product reduces interfacial tension, stable performance;
(3) unit needs alkali and salt can reach ultra low interfacial tension in the ternary composite driving prescription, has overcome alkali dirt and problems such as reduction polymer viscosity and visco-elasticity that alkali causes;
(4) available common sewage configuration solution, environmental benefit is good;
(5) economize this part of lixiviating, overcome the holddown clean-out service that the alkali dirt causes, the polymkeric substance working concentration descends greatly.
Concrete enforcement
1. surface active agent composition (W/W) is:
Sulfonated petro-leum 90
Virahol 10
The Daqing oil field three factories north 3-6-46 individual well crude oil that recovers the oil is measured northern 13 joint station sewage preparation grand celebration refining
0.15% 2 hours equilibrium interfacial tensions of the DQ-15 of change company polymkeric substance
| Tensio-active agent (%) | ?0.025 | ?0.05 | ?0.10 | ?0.20 | ?0.30 |
| Interfacial tension (mN/m) | ?0.0078 | ?0.0055 | ?0.0075 | ?0.0042 | ?0.0021 |
The Daqing oil field three factories north 3-6-46 individual well crude oil that recovers the oil is measured northern 13 joint station sewage preparation
The Daqing oil field three factories north 3-6-46 individual well crude oil that recovers the oil is measured northern 13 joint station sewage preparation
2 hours equilibrium interfacial tensions of the DQ-15 of Daqing Refinery company polymkeric substance 0.0ppm
| Tensio-active agent (%) | ?0.025 | ?0.05 | ?0.10 | ?0.20 | ?0.30 |
| Interfacial tension (mN/m) | ?0.0041 | ?0.0036 | ?0.0032 | ?0.0024 | ?0.0012 |
Jilin Oil Field Hong Gang oil recovery factory 10-04 individual well crude oil is measured the preparation of joint station return water
0.15% 2 hours equilibrium interfacial tensions of the DQ-15 of Daqing Refinery company polymkeric substance
| Tensio-active agent (%) | ???0.10 | ??0.20 | ??0.30 |
| Interfacial tension (mN/m) | ???0.0094 | ??0.0038 | ??0.0063 |
2, surface active agent composition (W/W) is:
Sulfonated petro-leum 77
Alkylsulfonate 6
Petroleum carboxylate 5
Virahol 12
Jilin Oil Field Hong Gang oil recovery factory 10-04 individual well crude oil is measured the preparation of joint station return water
0.15% 2 hours equilibrium interfacial tensions of the DQ-15 of Daqing Refinery company polymkeric substance
| Tensio-active agent (%) | 0.05 | ?0.10 | ?0.20 | ?0.30 |
| Interfacial tension (mN/m) | 0.0087 | ?0.0053 | ?0.0035 | ?0.0018 |
3, surface active agent composition (W/W) is:
Sulfonated petro-leum 83
Alkylbenzene sulfonate 6
Petroleum carboxylate 3
Virahol 8
Jilin Oil Field Hong Gang oil recovery factory 10-04 individual well crude oil is measured the preparation of joint station return water
0.15% 2 hours equilibrium interfacial tensions of the DQ-15 of Daqing Refinery company polymkeric substance
| Tensio-active agent (%) | 0.05 | ?0.10 | ?0.20 | ?0.30 |
| Interfacial tension (mN/m) | 0.0065 | ?0.0047 | ?0.0028 | ?0.0020 |
Claims (5)
1. the pure binary ultra low interfacial tension of the surfactant and polymer combination flooding of tertiary oil recovery application is filled a prescription, and it is characterized in that: main component and content are: (parts by weight)
Polymkeric substance 0～0.3
Tensio-active agent 0.05～0.6
Water 99.1～99.95
2. the pure binary ultra low interfacial tension of the surfactant and polymer combination flooding prescription that tertiary oil recovery according to claim 1 is used, it is characterized in that: described polymkeric substance can be polyacrylamide, modified polyacrylamide and xanthan gum (XC).
3. the pure binary ultra low interfacial tension of the surfactant and polymer combination flooding prescription that tertiary oil recovery according to claim 1 is used, it is characterized in that: described tensio-active agent can be sulfonated petro-leum or be the complexed surfactant that host adds thinner and other surfactant compound with the sulfonated petro-leum that the proportioning of its component is (w/w):
Sulfonated petro-leum 50～100
Alkylsulfonate 0～50
Carboxylate salt 0～50
Alkylaryl sulphonate 0～35
Low-carbon alcohol 0～20
4. the pure binary ultra low interfacial tension of the surfactant and polymer combination flooding prescription that tertiary oil recovery according to claim 3 is used, it is characterized in that: described sulfonated petro-leum is generated down for 40～60 ℃ at curing temperature through axe formula reactor by decompression two wires (containing) the after cut oil of crude refining.
5. the pure binary ultra low interfacial tension of the surfactant and polymer combination flooding prescription that tertiary oil recovery according to claim 1 is used, it is characterized in that: described water can be ortho-water, can also be return water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117770 CN1204224C (en) | 2002-05-17 | 2002-05-17 | Formula of pure binary super low interface tension composite oil-displacement agent of surfactant and pdymer for triple oil production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117770 CN1204224C (en) | 2002-05-17 | 2002-05-17 | Formula of pure binary super low interface tension composite oil-displacement agent of surfactant and pdymer for triple oil production |
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| Publication Number | Publication Date |
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| CN1458219A true CN1458219A (en) | 2003-11-26 |
| CN1204224C CN1204224C (en) | 2005-06-01 |
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| CN 02117770 Expired - Fee Related CN1204224C (en) | 2002-05-17 | 2002-05-17 | Formula of pure binary super low interface tension composite oil-displacement agent of surfactant and pdymer for triple oil production |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280182B (en) * | 2007-04-04 | 2010-10-06 | 中国石油化工股份有限公司 | Surfactant composition and use thereof |
| CN102464974A (en) * | 2010-11-17 | 2012-05-23 | 中国石油化工股份有限公司 | Composition capable of greatly improving crude oil recovery efficiency and preparation method thereof |
| CN103965852A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Composite oil displacement agent containing polymer and cationic/anionic surfactant, and oil displacement method |
| CN105505363A (en) * | 2014-09-23 | 2016-04-20 | 中国石油化工股份有限公司 | Oil displacement petroleum sulfonate composition and preparation method thereof |
| WO2021093601A1 (en) | 2019-11-14 | 2021-05-20 | 中国石油化工股份有限公司 | Surfactant and preparation method therefor |
| WO2022002226A1 (en) | 2020-07-02 | 2022-01-06 | 中国石油化工股份有限公司 | Alkylaniline polyether benzene sulfonate and preparation method therefor |
-
2002
- 2002-05-17 CN CN 02117770 patent/CN1204224C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280182B (en) * | 2007-04-04 | 2010-10-06 | 中国石油化工股份有限公司 | Surfactant composition and use thereof |
| CN102464974A (en) * | 2010-11-17 | 2012-05-23 | 中国石油化工股份有限公司 | Composition capable of greatly improving crude oil recovery efficiency and preparation method thereof |
| CN102464974B (en) * | 2010-11-17 | 2013-08-07 | 中国石油化工股份有限公司 | Composition capable of greatly improving crude oil recovery ratio and preparation method thereof |
| CN103965852A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Composite oil displacement agent containing polymer and cationic/anionic surfactant, and oil displacement method |
| CN103965852B (en) * | 2013-02-05 | 2016-12-28 | 中国石油化工股份有限公司 | Containing polymer and the compound oil displacement agent of negative and positive system surfactant and flooding method |
| CN105505363A (en) * | 2014-09-23 | 2016-04-20 | 中国石油化工股份有限公司 | Oil displacement petroleum sulfonate composition and preparation method thereof |
| WO2021093601A1 (en) | 2019-11-14 | 2021-05-20 | 中国石油化工股份有限公司 | Surfactant and preparation method therefor |
| WO2022002226A1 (en) | 2020-07-02 | 2022-01-06 | 中国石油化工股份有限公司 | Alkylaniline polyether benzene sulfonate and preparation method therefor |
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| Publication number | Publication date |
|---|---|
| CN1204224C (en) | 2005-06-01 |
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