CN1219017C - Use of Alkyl naphthalene sulfonate as oil displacing agent - Google Patents
Use of Alkyl naphthalene sulfonate as oil displacing agent Download PDFInfo
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- CN1219017C CN1219017C CN 02159682 CN02159682A CN1219017C CN 1219017 C CN1219017 C CN 1219017C CN 02159682 CN02159682 CN 02159682 CN 02159682 A CN02159682 A CN 02159682A CN 1219017 C CN1219017 C CN 1219017C
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- oil
- mixture
- displacing agent
- sodium
- sulfonate
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Abstract
The present invention belongs to chemical oil displacement agents in the field of petrochemical industry, particularly to an application of alkyl naphthalene sulfonate as oil displacement agents. The oil displacement agents measured by system proportion by weight comprise 80% to 100% of alkyl-naphthalene sulfonate, 0% to 20% of surfactant addition agents, and 0% to 20% of alcohol with a short carbon chain. The oil displacement agents provided by the present invention have the characteristics of less dosage and less alkali charge, and simultaneously have strong capacity of calcium and magnesium ions resistance and salt resistance.
Description
Technical field
The invention belongs to the chemical oil displacement agent in the petrochemical industry, particularly sulfonated alkyl naphathalene is as the purposes of oil-displacing agent.
Background technology
Along with some main force oil fields of China have entered the middle and later periods exploitation, tangible decreasing phenomenon has appearred in crude production rate.In order to keep and to improve crude oil yield, make full use of the resource in oil field, the chemical displacement of reservoir oil is comparatively desirable technical measures.Aspect the desk research and test in place of the chemical displacement of reservoir oil, China has carried out a large amount of and secular work, and has accumulated rich experience.A major issue in this technology commercialization process is to seek cheap, the sufficient and effective oil-displacing agent of originating, so that further reduce its production cost.Up to now, study both at home and abroad and the most popular petroleum sodium sulfonate (SPS) that remains, the raw material of producing SPS comes from the oil field, but because of aromaticity content in the crude oil in China lower, the yield of product is low during sulfonation, and the still unserviceable in a large number acid sludge of association, need to reclaim a large amount of useful unsulfonated oils in addition, therefore cause the production cost of SPS still higher.In addition, existing oil-displacing agent contains 1% or the Na of greater concn in the oil-displacing agent aqueous solution of preparation in oil displacement test
2CO
3Or NaOH, and the alkaline oil-displacing agent aqueous solution of high density the stratum capillary structure is damaged, and this injury has caused everybody concern when the chemical displacement of reservoir oil is carried out in the oil field like this, thereby proposed in the oil-displacing agent aqueous solution, to reduce the requirement of alkali charge.
Summary of the invention
The objective of the invention is to overcome existing oil-displacing agent, as petroleum sodium sulfonate (SPS) at China's production cost height, and existing oil-displacing agent high defective of oil-displacing agent aqueous solution alkali content when being used for the chemical displacement of reservoir oil, a kind of new oil-displacing agent-sulfonated alkyl naphathalene is provided.
Another object of the present invention is to provide a kind of is the oil-displacing agent of host with the sulfonated alkyl naphathalene.
The present invention comprises sodium alkyl naphthalene sulfonate, alkyl naphthalene sulfonic acid potassium, ammonium alkyl naphthalene sulfate or their any mixture as the sulfonated alkyl naphathalene of oil-displacing agent, preferred alkyl sodium naphthalene sulfonate, more preferably C1～4 sodium alkyl naphthalene sulfonates.C1～4 sodium alkyl naphthalene sulfonates are methyl naphthalene sulfonic acid sodium, ethyl naphthalene sodium sulfonate, propyl group sodium naphthalene sulfonate or sodium butylnaphthalenesulfonate, these four kinds of sodium alkyl naphthalene sulfonates are called as short carbon chain sodium alkyl naphthalene sulfonate (SANS) traditionally, and the structural formula of these four compounds is followed successively by:
The molecular weight of these four compounds is followed successively by: 244,258,272 and 286.
In actual applications, consider that from the angle of raw material sources methyl naphthalene sulfonic acid sodium and ethyl naphthalene sodium sulfonate are more economical, therefore be more preferably methyl naphthalene sulfonic acid sodium or ethyl naphthalene sodium sulfonate.
When the abovementioned alkyl naphthalenesulfonate is used as oil-displacing agent, can use separately, also can two or more mix use arbitrarily.
Sulfonated alkyl naphathalene SANS is easy to preparation, and for example the raw material of methyl naphthalene sulfonic acid sodium is a methylnaphthalene, and the raw material of ethyl naphthalene sodium sulfonate is an ethyl naphthalene, and methylnaphthalene or ethyl naphthalene can make corresponding sulfonate behind oversulfonate.And methylnaphthalene and ethyl naphthalene are the by products in the coal tar course of processing, and therefore, sulfonated alkyl naphathalene among the present invention and past are that raw material synthetic sulfonated petro-leum has very big difference with the oil.
Sulfonated alkyl naphathalene of the present invention is as the purposes of oil-displacing agent, and in system weight per-cent, this oil-displacing agent comprises:
Surfactant adjuvant 0%～20%;
Short carbon chain alcohol 0%～20%;
Wherein said surfactant adjuvant is negatively charged ion, positively charged ion, nonionogenic tenside or their mixture, and anion surfactant can be C
12～C
16Alkylsulfonate, C
12～C
21Carboxylate salt, C
8～C
14Alkylbenzene sulfonate or heavy alkylbenzene sulfonate; Cation form agent alive is cetyl trimethylammonium bromide or palmityl trimethyl ammonium chloride; Nonionogenic tenside is for containing C
8～C
16Alkyl alcohol Soxylat A 25-7 or synthetic fatty acid Soxylat A 25-7, wherein polyoxyethylene groups is 7～15.
In order to adapt to some special crude oil, can comprise short carbon chain alcohol in the oil-displacing agent of the present invention, described short carbon chain alcohol is Virahol, propyl carbinol or their any mixture for example.
In oil displacement test, adopt the oil-displacing agent preparation oil-displacing agent aqueous solution of the present invention, wherein the content of oil-displacing agent is 0.05wt%～0.3wt%, the content of yellow soda ash or sodium hydroxide is 0.2～0.5wt%, and this oil-displacing agent aqueous solution can form the ultra low interfacial tension of 10-2～10-3 dynes per centimeter with normal paraffin or crude oil.In the aqueous solution of oil-displacing agent, add 300ppmCa
+ 2Or Mg
+ 2Can not exert an influence to oil water interfacial tension with the NaCl of 50000ppm.
Oil-displacing agent provided by the invention has the few and few characteristics of alkali charge of consumption, and it has the stronger anticalcium magnesium ion and the ability of anti-salt simultaneously.
Description of drawings
Fig. 1 is the oil-displacing agent aqueous solution of the embodiment of the invention 1 and the INTERFACIAL TENSION CURVES between the Gudong field crude oil;
Fig. 2 is the oil-displacing agent aqueous solution of the embodiment of the invention 2 and the INTERFACIAL TENSION CURVES between the Gudong field crude oil.
Embodiment
Embodiment 1
At 0.3wt%Na
2CO
3Among the solution 100ml, adding oil-displacing agent is 0.1g methyl naphthalene sulfonic acid sodium and 0.01g heavy alkylbenzene sulfonic acid sodium, is mixed with the oil-displacing agent aqueous solution.Adopt Gudong field underground water during preparation.Drip interfacial tensimeter with rotation and measure interfacial tension between this oil-displacing agent aqueous solution and the Gudong field crude oil 62 ℃ the time.The results are shown in Figure 1.
Embodiment 2
With Gudong field underground water preparation 0.3wt%Na
2CO
3Solution 100ml is at this Na
2CO
3Adding oil-displacing agent in the solution is 0.24g methyl naphthalene sulfonic acid sodium, is mixed with the oil-displacing agent aqueous solution.Drip interfacial tensimeter with rotation and measure interfacial tension between this oil-displacing agent aqueous solution and the Gudong field crude oil 62 ℃ the time, the results are shown in Figure 2.
Claims (3)
1. a sulfonated alkyl naphathalene is as the purposes of oil-displacing agent, and it is characterized in that: in system weight per-cent, this oil-displacing agent comprises:
Methyl naphthalene sulfonic acid sodium, ethyl naphthalene sodium sulfonate, propyl group sodium naphthalene sulfonate, sodium butylnaphthalenesulfonate or their any mixture 80%～100%
Surfactant adjuvant 0%～20%
Short carbon chain alcohol 0%～20%
Described surfactant adjuvant is negatively charged ion, positively charged ion, nonionogenic tenside or their mixture.
2. purposes as claimed in claim 1 is characterized in that: described anion surfactant is C
12～C
16Alkylsulfonate, C
12～C
21Carboxylate salt, C
8～C
14Alkylbenzene sulfonate, heavy alkylbenzene sulfonate or their any mixture; The agent alive of described cation form is cetyl trimethylammonium bromide, palmityl trimethyl ammonium chloride or their any mixture; Described nonionogenic tenside is for containing C
8～C
16Alkyl alcohol Soxylat A 25-7, synthetic fatty acid Soxylat A 25-7 or their any mixture, wherein polyoxyethylene groups is 7～15.
3. purposes as claimed in claim 1 is characterized in that: described short carbon chain alcohol is Virahol, propyl carbinol or their any mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02159682 CN1219017C (en) | 2002-12-30 | 2002-12-30 | Use of Alkyl naphthalene sulfonate as oil displacing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02159682 CN1219017C (en) | 2002-12-30 | 2002-12-30 | Use of Alkyl naphthalene sulfonate as oil displacing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1511921A CN1511921A (en) | 2004-07-14 |
| CN1219017C true CN1219017C (en) | 2005-09-14 |
Family
ID=34237583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02159682 Expired - Fee Related CN1219017C (en) | 2002-12-30 | 2002-12-30 | Use of Alkyl naphthalene sulfonate as oil displacing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219017C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404439C (en) * | 2005-05-20 | 2008-07-23 | 中国石油天然气股份有限公司 | Oil repellents |
| 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 |
| CN101974321B (en) * | 2010-09-30 | 2014-01-29 | 山东大学 | Micelle oil displacement agent with oil deposit adaptability |
| CN104371693B (en) * | 2013-08-16 | 2017-07-21 | 中国石油化工股份有限公司 | A kind of oil displacement agent composition and preparation method thereof |
| CN104650841B (en) * | 2013-11-22 | 2018-10-16 | 中国石油天然气股份有限公司 | A kind of zwitterion compound surfactant oil displacement agent |
| CN104232048A (en) * | 2014-08-26 | 2014-12-24 | 山东聚鑫化工有限公司 | Compound type oil-displacing agent |
| CN105419764B (en) * | 2014-09-17 | 2018-08-07 | 中国石油化工股份有限公司 | A kind of resisting high temperature, high salt furfural extract oil sulfonate systems alone 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 |
-
2002
- 2002-12-30 CN CN 02159682 patent/CN1219017C/en not_active Expired - Fee Related
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| CN1511921A (en) | 2004-07-14 |
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Granted publication date: 20050914 Termination date: 20131230 |