CN1204224C - 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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- CN1204224C CN1204224C CN 02117770 CN02117770A CN1204224C CN 1204224 C CN1204224 C CN 1204224C CN 02117770 CN02117770 CN 02117770 CN 02117770 A CN02117770 A CN 02117770A CN 1204224 C CN1204224 C CN 1204224C
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Abstract
The present invention relates to a compound displacement formula of the pure binary ultralow interfacial tension of surfactant-polymer in tertiary oil recovery, which comprises the main components and the content by weight: 0 to 0.3 of polymers, 0.05 to 0.6 of surfactants and 99.1 to 99.95 of water. The product uses distillate oil of petroleum refined by oilfield crude oil as raw material and is produced through sulphonation by an axe type reactor, production processes and devices are simple, the raw material is easy to obtain and the cost is low. The use concentration of a surfactant is not higher than that of the existing system. The product has the advantages of favourable effect of the reduction of interfacial tension and stable performance; the ultralow interfacial tension can be realized without alkali and salt in the ternary displacement formula, and the problems that alkali scale is created by the alkali and the viscosity and the viscoelasticity of the polymers are reduced are solved. Ordinary polluted water is used for configuring the solution, and the environmental protection benefit is good. The alkali part is omitted, the problem of holddown flushing created by the alkali scale is overcome, and the use concentration of the polymers is greatly decreased.
Description
Technical 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) need not alkali in the ternary composite driving prescription and salt can reach ultra low interfacial tension, overcome the alkali dirt that alkali causes and reduced problems such as polymer viscosity and visco-elasticity;
(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.
Embodiment
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 (3)
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: the parts by weight of main component and content are:
Polymkeric substance 0～0.3
Tensio-active agent 0.05～0.6
Water 99.1～99.95;
Described polymkeric substance is a polyacrylamide, or modified polyacrylamide or xanthan gum;
Described tensio-active agent is sulfonated petro-leum or is the complexed surfactant that host adds thinner and other surfactant compound with the sulfonated petro-leum that the weight proportion of its component is:
Sulfonated petro-leum 50～100
Alkylsulfonate 0～50
Carboxylate salt 0～50
Alkylaryl sulphonate 0～35
The following low-carbon alcohol 0～20 of three carbon.
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 sulfonated petro-leum is generated down for 40～60 ℃ at curing temperature through axe formula reactor by the decompression two wires after cut oil of crude refining.
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 water is ortho-water, or 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458219A CN1458219A (en) | 2003-11-26 |
| CN1204224C true CN1204224C (en) | 2005-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (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 |
| 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 |
| 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 |
| CN112795002B (en) | 2019-11-14 | 2022-04-01 | 中国石油化工股份有限公司 | Polyether anionic and nonionic surfactant containing heteroatom and preparation method thereof |
| CN113881418B (en) | 2020-07-02 | 2023-10-31 | 中国石油化工股份有限公司 | Alkylaniline polyether benzene sulfonate oil displacement surfactant and preparation method and application thereof |
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- 2002-05-17 CN CN 02117770 patent/CN1204224C/en not_active Expired - Fee Related
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Granted publication date: 20050601 Termination date: 20210517 |