CN104312564B - Salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery - Google Patents
Salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery Download PDFInfo
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- CN104312564B CN104312564B CN201410456051.5A CN201410456051A CN104312564B CN 104312564 B CN104312564 B CN 104312564B CN 201410456051 A CN201410456051 A CN 201410456051A CN 104312564 B CN104312564 B CN 104312564B
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- oil
- weight portions
- displacement agent
- high temperature
- oil displacement
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
Abstract
The invention discloses a kind of salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery, it is by 10~15 weight portion Dialkylbenzene sulphonates, 15~18 part by weight modified glycine betaines, the water mixing of 1.5~2 weight portion anionic gemini surfactants, 2.5~3 weight portion cosurfactants and 62~71 weight portions is constituted；Above-mentioned oil displacement agent can reach 10 in 0.3~0.4% concentration- 3The oil/water interfacial tension of mN/m, so as to avoid the injury for adding alkaline body to oil reservoir, is conducive to the sustainable development of oil exploitation, can be used for high temperature, high salt, the tertiary oil recovery in high hardness oil field, up to 15%, the degree of resistance to hard water improves recovery ratio up to more than 15% to the tolerance of salinity up to 0.6%.
Description
Technical field
The present invention relates to field of petroleum exploitation, and in particular to a kind of salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery.
Background technology
With the continuous exploitation of oil, China's oil field majority has been enter into High water cut, hyposmosis, viscous crude, high temperature, high salt exploitation
Period, remaining oil reservoir is distributed in the larger place of the exploitation such as heterogeneous extremely strong carbonate rock fractured cave difficulty.Therefore in existing hair
Generally used as oil displacement agent using various surfactants newly developed in the tertiary oil recovery technology of exhibition, by with polymer etc.
Compounding, so as to improve oil displacement efficiency and sweep efficiency, but existing surfactant formulatory oil displacement agent, in oil displacement efficiency, involve
There is certain deficiency in coefficient and oil resistant field high temperature, high salt, performance of hard water.
The content of the invention
It is an object of the invention to provide a kind of salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery, it can effectively improve displacement of reservoir oil effect
Rate and sweep efficiency, can apply to high temperature, high salt, the tertiary oil recovery in high hardness degree oil field.
To achieve the above object, the present invention is adopted the following technical scheme that and implemented：
A kind of salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery, its be by the Dialkylbenzene sulphonate of 10~15 weight portions,
The modified betaine of 15~18 weight portions, the anionic gemini surfactant of 1.5~2 weight portions, 2.5~3 weight portions are helped
The water mixing of surfactant and 62~71 weight portions is constituted；
Modified betaine is that polyoxyethylated carboxybetaine and trimethylolpropane reaction are obtained, and reaction mechanism is：
Wherein：N=12~14.
Certain those of ordinary skill in the art can choose corresponding material ratio and anti-according to reaction mechanism disclosed above
Temperature is answered to obtain the production rate of optimal glycine betaine modifier.For Dialkylbenzene sulphonate, Gemini surface active agent, help
The selection of surfactant base, those of ordinary skill in the art can use according to existing in Flooding Agent for EOR
Corresponding raw material is used.
Modified betaine disclosed above is collocated with each other what is be configured to Dialkylbenzene sulphonate, Gemini surface active agent
Three oil displacement agents, it can be used for High water cut, hyposmosis, viscous crude, high temperature, the exploitation of salt form oil reservoir high, improve oil displacement efficiency and ripple
And coefficient, increase recovery ratio, can apply to high temperature, high salt, the tertiary oil recovery in high hardness oil field.
Further scheme is：
Dialkylbenzene sulphonate is detergent alkylate alkylsulfonate；
Gemini surface active agent is the double benzene sulfonate Gemini surface active agents of bis ether；For example can be：(the 4- alcoxyls of 2,2- bis-
Base -3- benzene sulfonic acid sodium salts) propane；
Cosurfactant is C3~C4 alcohol.
In the technical scheme that the present invention is provided, on the basis of goal of the invention is realized, each raw material of different deal numbers is prepared
Oil displacement agent performance between still there is certain difference, to ensure that oil displacement efficiency, sweep efficiency and recovery ratio reach most preferably,
Implemented present invention preferably employs following concrete scheme, it can improve 0.065~0.072 percentage point of displacement of reservoir oil rate.
That is,：Oil displacement agent is by the Dialkylbenzene sulphonate of 12 weight portions, the modified betaine of 16 weight portions, 1.8 weights
The Gemini surface active agent of part is measured, the water mixing of the cosurfactant of 2.6 weight portions and 68 weight portions is constituted.
The oil displacement agent of such scheme composition can be used alone in the case of alkali is not added with, and be can reach in less concentration
10- 3The ability of the oil/water interfacial tension of mN/m, so as to avoid the injury for adding alkaline body to oil reservoir, is conducive to oil exploitation
Sustainable development.The oil displacement agent that the present invention is provided is relative to general by commonly weighing alkyl sulfonate, glycine betaine and Shuangzi surface
The oil displacement agent of activating agent composition can save consumption 2.2~2.4%, and oil displacement efficiency improves 0.4~0.45 percentage point or so, can use
In high temperature, high salt, high hardness degree oil field tertiary oil recovery, the tolerance of salinity is up to 15% (with the mass fraction of the sodium chloride in water body
Meter), the degree of resistance to hard water is up to 0.6% (in terms of the mass fraction of the calcium carbonate in water body).
Specific embodiment
In order that objects and advantages of the present invention become more apparent, the present invention is carried out further with reference to embodiments
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention
The claimed scope of claim.Raw material used can be bought by commercial channel unless otherwise instructed in following examples
Obtain.
The specific composition of each raw material used is as follows respectively in embodiment 1~3：
Modified betaine is that polyoxyethylated carboxybetaine and trimethylolpropane reaction are obtained, and reaction mechanism is：
Wherein：N=12~14.
In above-mentioned reaction, the reaction mol ratio 3.5 of modified betaine and trimethylolpropane:1, the temperature of reaction for 60~
70℃。
Dialkylbenzene sulphonate is detergent alkylate alkylsulfonate；Gemini surface active agent is (the 4- alcoxyls of 2,2- bis-
Base -3- benzene sulfonic acid sodium salts) propane；Cosurfactant is C3~C4 alcohol.
Embodiment 1
Weigh the Shuangzi of the Dialkylbenzene sulphonate of 10 weight portions, the modified betaine of 18 weight portions and 1.5 weight portions
Surfactant is mixed in adding reactor, is subsequently adding the water stirring of the cosurfactant and 62 weight portions of 3 weight portions
Oil displacement agent is obtained to uniform.
By oil displacement agent obtained above add simulation Hebei Renqiu oil extraction in oil field operating mode underground water and blends of crudes in,
The interfacial tension and recovery ratio between crude oil/stratum water are determined, when measuring oil displacement agent mass concentration for 0.048g/L, crude oil/
Interfacial tension 1.02 × 10 between the water of stratum-3MN/m, oil recovery is 16.8%, and the oil displacement agent of oil recovering break milk separation can
Degraded.
Embodiment 2
Weigh the Shuangzi of the Dialkylbenzene sulphonate of 12 weight portions, the modified betaine of 16 weight portions and 1.8 weight portions
Surfactant is mixed in adding reactor, and the water of the cosurfactant and 68 weight portions that are subsequently adding 2.6 weight portions is stirred
Mix to uniform and oil displacement agent is obtained.
By oil displacement agent obtained above add simulation Hebei Renqiu oil extraction in oil field operating mode underground water and blends of crudes in,
The interfacial tension and recovery ratio between crude oil/stratum water are determined, when measuring oil displacement agent mass concentration for 0.0365g/L, crude oil/
Interfacial tension 1.38 × 10 between the water of stratum-3MN/m, oil recovery is 16.5%, and the oil displacement agent of oil recovering break milk separation can
Degraded.
Embodiment 3
Weigh the Shuangzi table of the Dialkylbenzene sulphonate of 15 weight portions, the modified betaine of 15 weight portions and 2 weight portions
Face activating agent is mixed in adding reactor, is subsequently adding the water stirring of the cosurfactant and 71 weight portions of 2.5 weight portions
Oil displacement agent is obtained to uniform.
By oil displacement agent obtained above add simulation Hebei Renqiu oil extraction in oil field operating mode underground water and blends of crudes in,
The interfacial tension and recovery ratio between crude oil/stratum water are determined, when measuring oil displacement agent mass concentration for 0.0272g/L, crude oil/
Interfacial tension 1.75 × 10 between the water of stratum-3MN/m, oil recovery is 15.5%, and the oil displacement agent of oil recovering break milk separation can
Degraded.
Claims (2)
1. a kind of salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery, it is by the Dialkylbenzene sulphonate of 10~15 weight portions, 15
The modified betaine of~18 weight portions, the anionic gemini surfactant of 1.5~2 weight portions, 2.5~3 weight portions help table
The water mixing of face activating agent and 62~71 weight portions is constituted；
Modified betaine is that polyoxyethylated carboxybetaine and trimethylolpropane reaction are obtained, and reaction mechanism is：
Wherein：N=12~14；
Dialkylbenzene sulphonate is detergent alkylate alkylsulfonate；
Gemini surface active agent is 2,2- bis- (4- alkoxy -3- benzene sulfonic acid sodium salts) propane；
Cosurfactant is C3~C4 alcohol.
2. salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery as claimed in claim 1, it is characterised in that：Oil displacement agent is by 12 weight
The Dialkylbenzene sulphonate of part, the modified betaine of 16 weight portions, the Gemini surface active agent of 1.8 weight portions, 2.6 weight portions
Cosurfactant and 68 weight portions water mixing constitute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410456051.5A CN104312564B (en) | 2014-09-05 | 2014-09-05 | Salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery |
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| CN201410456051.5A CN104312564B (en) | 2014-09-05 | 2014-09-05 | Salt tolerant high temperature resistance oil displacement agent used for tertiary oil recovery |
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| CN104312564A CN104312564A (en) | 2015-01-28 |
| CN104312564B true CN104312564B (en) | 2017-07-11 |
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| CN112251210B (en) * | 2020-10-29 | 2021-04-27 | 大庆轩隆化工有限公司 | Preparation method of surfactant for universality improvement of crude oil recovery rate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665685A (en) * | 2009-09-14 | 2010-03-10 | 天津师范大学 | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery |
| CN102277146A (en) * | 2010-06-11 | 2011-12-14 | 中国石油化工股份有限公司 | Composition for improving recovery ratio substantially and preparation method thereof |
| CN102276822A (en) * | 2010-06-11 | 2011-12-14 | 中国石油化工股份有限公司 | Alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine and preparation method thereof |
| CN102703048A (en) * | 2012-04-26 | 2012-10-03 | 合肥新星油田化学剂有限责任公司 | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof |
| WO2013186110A1 (en) * | 2012-06-11 | 2013-12-19 | Basf Se | Method of recovering oil from a subterranean formation |
-
2014
- 2014-09-05 CN CN201410456051.5A patent/CN104312564B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665685A (en) * | 2009-09-14 | 2010-03-10 | 天津师范大学 | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery |
| CN102277146A (en) * | 2010-06-11 | 2011-12-14 | 中国石油化工股份有限公司 | Composition for improving recovery ratio substantially and preparation method thereof |
| CN102276822A (en) * | 2010-06-11 | 2011-12-14 | 中国石油化工股份有限公司 | Alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine and preparation method thereof |
| CN102703048A (en) * | 2012-04-26 | 2012-10-03 | 合肥新星油田化学剂有限责任公司 | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof |
| WO2013186110A1 (en) * | 2012-06-11 | 2013-12-19 | Basf Se | Method of recovering oil from a subterranean formation |
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