CN1241610A - Chemical agent for intensified oil production - Google Patents
Chemical agent for intensified oil production Download PDFInfo
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- CN1241610A CN1241610A CN 99111407 CN99111407A CN1241610A CN 1241610 A CN1241610 A CN 1241610A CN 99111407 CN99111407 CN 99111407 CN 99111407 A CN99111407 A CN 99111407A CN 1241610 A CN1241610 A CN 1241610A
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- China
- Prior art keywords
- chemical agent
- oil production
- intensified oil
- fatty alcohol
- polyoxyethylene ether
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The chemical agent contains alkyl naphthalene sulfonate 2-35%, high-efficiency lignosulfonate 2-50% and solubilizing assistant 2-30% and the rest is water. The high efficiency,cheap and stable chemical agent can ensure ultralow interfacial tension of raw oil and water mixture in relatively wide concentration range, reduce oil exploitation cost and is favorable to the industrial application of forced oil exploitation.
Description
The present invention relates to oil exploitation technology, is the chemical agent for intensified oil production of the remaining crude oil in stratum after a kind of water drive that is used for gathering.
Formation crude oil can only be exploited out and can adopt about 40% of reserves after the water injection technology displacement of reservoir oil when oil production, and the extraction of a large amount of remaining crude oil need could further improve the recovery ratio of crude oil like this with the method (being tertiary oil recovery) of intensified oil reduction.Chemical flooding is one of main direction of intensified oil reduction technology, and the key of chemical flooding technology is the character of the tensio-active agent of employing.After general chemical assistant was made into tensio-active agent injection oil reservoir, tensio-active agent easily by the absorption of the rock in the stratum, can not keep ultra low interfacial tension, influences the effect of the displacement of reservoir oil.At present, the tensio-active agent that is used for intensified oil reduction is mainly sulfonated petro-leum and heavy alkylbenzene sulfonate, because producing these two kinds of sulfonate raw materials used is industry byproduct, the raw material composition is wayward, the product performance instability of output, structure also is difficult to adjust, and brings a lot of inconvenience to application, and effect is also undesirable.Proposing a kind of composition of the application in tertiary oil recovery among the patent CN1171292A, is to be main component with alkylbenzene sulfonation thing, equally also has the problems referred to above.The key of the industrial implementation of chemical flooding is the efficient, cheap and stable of chemical agent, and still current a lot of chemical oil displacement agents are difficult to satisfy.
The object of the present invention is to provide a kind of chemical agent for intensified oil production of efficient, cheap, stable performance.
The present invention includes following component: sulfonated alkyl naphathalene 2～35%, efficient sulfonated lignin 2～50%, solubilizing agent 2～30%, all the other are water.
Alkyl in the sulfonated alkyl naphathalene is a straight or branched, and chain length is C
5～C
22
Efficient sulfonated lignin are through oxidation, oxyethylation, carboxylation or alkylating sulfonated lignin.
In above-mentioned component, also can add fatty alcohol-polyoxyethylene ether or fatty alcohol polyoxyethylene ether sulfate less than 20%.
In above-mentioned component, can add solubilizing agent less than 30%.
Above-mentioned solubilizing agent also can be substituted by fatty alcohol-polyoxyethylene ether or fatty alcohol polyoxyethylene ether sulfate.
The fatty alcohol-polyoxyethylene ether structure is RO (CH
2CH
2O)
nH, the fatty alcohol polyoxyethylene ether sulfate structure is RO (CH
2CH
2O) SO
4Na, aliphatic chain can be side chain or straight chain, and carbon chain lengths is C
12-C
22, oxygen ethyl chain length n is 2～20.
Solubilizing agent is low-carbon alcohol, low-carbon (LC) ketone or low-carbon (LC) ether, and carbon chain lengths is C
1～C
6
The present invention has adopted sulfonated lignin efficiently, and it not only has low price, after modification, have the oily water termination tensile ability that reduces again, allocate an amount of sulfonated alkyl naphathalene into after because the result of compound synergic effect, make between an oily water and form ultra low interfacial tension, not only can be less than 10
-3MNm
-1Level, and have the chemical agent concentration scope of broad and the alkali concn scope of broad.Chemical agent has good preservation and stability in use, and has good oil displacement efficiency and low usage quantity.
Thereby the present invention has possessed efficient, cheap unique advantage.
The present invention illustrates that by following example this chemical agent has the ability of good reduction crude oil one local water interfacial tension, and can in 0.03%～0.60% wide concentration range good effect be arranged all.
The actual measurement condition:
1. testing tool: an interfacial tensimeter is dripped in the rotation of 500 types
2. temperature: 45 ℃
3. crude oil: experimental standard crude oil
4. water: local water
5. naoh concentration is 1.2%
| Chemical agent concentration | Interfacial tension mNm between crude oil-local water -1 |
| ????0.03 ????0.05 ????0.10 ????0.15 ????0.20 ????0.25 ????0.30 ????0.35 ????0.40 ????0.45 ????0.50 ????0.55 ????0.60 | ???????0.019 ???????0.0045 ???????0.0018 ???????0.0018 ???????0.0019 ???????0.0019 ???????0.0021 ???????0.0015 ???????0.0011 ???????0.0013 ???????0.0016 ???????0.0018 ???????0.0020 |
The following example explanation of the present invention chemical agent concentration, alkali concn and oily water termination tensile relation.Can find out that by example the present invention is not only at the chemical agent concentration of broad, and in the basicity scope of broad, the ability of good reduction crude oil one local water interfacial tension be arranged all.
It is as follows that the present invention describes the embodiment that forms and prepare:
Embodiment 1:
Major ingredient:
Sulfonated alkyl naphathalene 9%
Efficient sulfonated lignin 16%
C
12H
25O(CH
2CH
2O)
5H?????????????0.5％
Low-carbon alcohol 20%
Water 54.5%
Above sulfonated alkyl naphathalene can adopt tetradecyl toluene naphthalenesulfonate, and also can adopt alkyl is C
5～C
20Naphthalene sulfonic salt.Low-carbon alcohol can adopt butanols, also C
2～C
6Other low-carbon alcohol.
Preparation order of the present invention is as follows: at first the Total Water with low-carbon alcohol and 20% mixes, and then the lauryl alcohol Soxylat A 25-7 is dissolved in the mixed solution, sulfonated alkyl naphathalene is dissolved in again, and forms A component solution.
Efficient sulfonated lignin are dissolved in the surplus water, form B component solution.
At last,, A component solution is sneaked into B component solution gradually, promptly be mixed with content and be 25% chemical agent with stirring.
Embodiment 2:
Major ingredient:
Sulfonated alkyl naphathalene 20%
Efficient sulfonated lignin 20%
Low-carbon alcohol 20%
Water 40%
The preparation order is with reference to embodiment 1.
Embodiment 3:
Major ingredient:
Sulfonated alkyl naphathalene 2%
Efficient sulfonated lignin 50%
RO(CH
2CH
2O)
nH????????????????????????10％
Low-carbon (LC) ketone 10%
Water 38%
Preparation is with reference to embodiment 1.
Embodiment 4:
Sulfonated alkyl naphathalene 5%
Efficient sulfonated lignin 10%
RO(CH
2CH
2O)
nSO
4Na???????????????????10％
Water 75%
Preparation is with reference to embodiment 1.
Embodiment 5:
Major ingredient:
Sulfonated alkyl naphathalene 35%
Efficient sulfonated lignin 2%
Low-carbon alcohol 30%
Water 33%
Preparation is with reference to embodiment 1.
Embodiment 6:
Major ingredient:
Sulfonated alkyl naphathalene 35%
Efficient sulfonated lignin 5%
Low-carbon alcohol 2%
Water 58%
Preparation is with reference to embodiment 1.
According to the situation of prescription provided by the present invention and formation crude oil, the component that goes out various ratios capable of being combined.The method of using adopts the perfusion of common tertiary oil recovery, and the add-on of chemical agent is below 1% of the water yield.
Claims (7)
1. chemical agent for intensified oil production is characterized in that comprising following component: sulfonated alkyl naphathalene 2～35%, and efficient sulfonated lignin 2～50%, solubilizing agent 2～30%, all the other are water.
2. chemical agent for intensified oil production according to claim 1 is characterized in that: the alkyl in the sulfonated alkyl naphathalene is a straight or branched, and chain length is C
5～C
22
3. chemical agent for intensified oil production according to claim 1 is characterized in that: efficient sulfonated lignin are through oxidation, oxyethylation, carboxylation or alkylating sulfonated lignin.
4. chemical agent for intensified oil production according to claim 1 is characterized in that: also can add fatty alcohol-polyoxyethylene ether or fatty alcohol polyoxyethylene ether sulfate less than 20% in component.
5. chemical agent for intensified oil production according to claim 1 is characterized in that: described solubilizing agent can be substituted by fatty alcohol-polyoxyethylene ether or fatty alcohol polyoxyethylene ether sulfate.
6. according to claim 1,4 described chemical agent for intensified oil production, it is characterized in that: the fatty alcohol-polyoxyethylene ether structure is RO (CH
2CH
2O)
nH, the fatty alcohol polyoxyethylene ether sulfate structure is RO (CH
2CH
2O) SO
4Na, aliphatic chain can be side chain or straight chain, and carbon chain lengths is C
12～C
22, oxygen ethyl chain length n is 2～20.
7. chemical agent for intensified oil production according to claim 1 is characterized in that: solubilizing agent is low-carbon alcohol, low-carbon (LC) ketone or low-carbon (LC) ether, and carbon chain lengths is C
1～C
6
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99111407 CN1081216C (en) | 1999-08-13 | 1999-08-13 | Chemical agent for intensified oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99111407 CN1081216C (en) | 1999-08-13 | 1999-08-13 | Chemical agent for intensified oil production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1241610A true CN1241610A (en) | 2000-01-19 |
| CN1081216C CN1081216C (en) | 2002-03-20 |
Family
ID=5275067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99111407 Expired - Fee Related CN1081216C (en) | 1999-08-13 | 1999-08-13 | Chemical agent for intensified oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081216C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575150A (en) * | 2009-10-14 | 2012-07-11 | 巴斯夫欧洲公司 | Method for producing oil using surfactant mixtures |
| CN105441055A (en) * | 2015-11-14 | 2016-03-30 | 山东宝莫生物化工股份有限公司 | Modified lignosulfonate compound and application thereof in thermal/chemical flooding of oil field |
| CN107365574A (en) * | 2017-06-15 | 2017-11-21 | 中国石油化工股份有限公司 | A kind of viscosity reduction oil displacement agent for common heavy oil reservoir and preparation method thereof |
| CN108264892A (en) * | 2017-12-21 | 2018-07-10 | 东北农业大学 | A kind of composition for the surfactant for being used to discharge underground oily material |
| CN109054796A (en) * | 2018-08-22 | 2018-12-21 | 东营利丰化工新材料有限公司 | A kind of high efficiency composition oil displacement agent and preparation method thereof |
| CN109266321A (en) * | 2018-10-11 | 2019-01-25 | 中国石油化工股份有限公司 | Wettability modification oil film removal relative permeability modifier and preparation method thereof |
-
1999
- 1999-08-13 CN CN 99111407 patent/CN1081216C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575150A (en) * | 2009-10-14 | 2012-07-11 | 巴斯夫欧洲公司 | Method for producing oil using surfactant mixtures |
| CN102575150B (en) * | 2009-10-14 | 2015-03-11 | 巴斯夫欧洲公司 | Method for producing oil using surfactant mixtures |
| CN105441055A (en) * | 2015-11-14 | 2016-03-30 | 山东宝莫生物化工股份有限公司 | Modified lignosulfonate compound and application thereof in thermal/chemical flooding of oil field |
| CN105441055B (en) * | 2015-11-14 | 2018-08-21 | 山东宝莫生物化工股份有限公司 | Modified lignin mahogany sulfonate compound and its application in oil field heat/chemical flooding |
| CN107365574A (en) * | 2017-06-15 | 2017-11-21 | 中国石油化工股份有限公司 | A kind of viscosity reduction oil displacement agent for common heavy oil reservoir and preparation method thereof |
| CN107365574B (en) * | 2017-06-15 | 2020-04-17 | 中国石油化工股份有限公司 | Viscosity-reducing oil displacement agent for common heavy oil reservoir and preparation method thereof |
| CN108264892A (en) * | 2017-12-21 | 2018-07-10 | 东北农业大学 | A kind of composition for the surfactant for being used to discharge underground oily material |
| CN109054796A (en) * | 2018-08-22 | 2018-12-21 | 东营利丰化工新材料有限公司 | A kind of high efficiency composition oil displacement agent and preparation method thereof |
| CN109266321A (en) * | 2018-10-11 | 2019-01-25 | 中国石油化工股份有限公司 | Wettability modification oil film removal relative permeability modifier and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1081216C (en) | 2002-03-20 |
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