CN101955769A - Method for preparing surface active agent for tertiary oil recovery - Google Patents
Method for preparing surface active agent for tertiary oil recovery Download PDFInfo
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- CN101955769A CN101955769A CN2010105068996A CN201010506899A CN101955769A CN 101955769 A CN101955769 A CN 101955769A CN 2010105068996 A CN2010105068996 A CN 2010105068996A CN 201010506899 A CN201010506899 A CN 201010506899A CN 101955769 A CN101955769 A CN 101955769A
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- active agent
- fat
- sodium hydroxide
- surface active
- oil recovery
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Abstract
The invention discloses a method for preparing a surface active agent for tertiary oil recovery. The raw material of the surface active agent contains 50% to 55% of cottonseed oil residue, 20% to 25% of mixed alcohol and 25% to 30% of sodium hydroxide. The method comprises the following steps of: 1) putting the cottonseed oil residue into a stirring kettle and then heating, 2) adding the sodium hydroxide solution into the cottonseed oil residue after the temperature inside the stirring kettle reaches to 80 DEG C, and stirring for 1 hour, and 3) adding the mixed alcohol into the stirring kettle, stopping heating, stirring for 30 min and then discharging so as to acquire the finished product. The finished product is stored in dark under an ambient temperature from 0 to 40 DEG C. Before injecting, the surface active agent and water are prepared into solution based on a ratio of 1:80, and then the solution is injected into a rock stratum with an injecting speed of 2 to 2.5 tons per hour. The method of the invention has the advantages that the surface active agent is difficult to sediment in use, the solution surface can directionally arrange, the solution surface tension obviously decreases and the surface active agent can be applied to extra-high hypersalinity oil deposit so as to promote the recovery ratio. Meanwhile, the method of the invention uses the cottonseed oil residue as the major raw materials, has simple synthesizing technique, is low-cost and has better application prospect.
Description
Technical field
The present invention relates to a kind of preparation of tensio-active agent, especially relate to a kind of preparation method of used for tertiary oil recovery tensio-active agent.
Background technology
The abundant extraction of petroleum-based energy and utilization have rationally caused people's very big attention.Since conventional once and the total tar productivity of secondary oil recovery (POR and SOR) be not very high, the run-of-the-mill mark only can reach 20%～40%, is up to 50%, also has 50%～80% crude oil to fail extraction.Therefore under situation about being becoming tight energy day, improve the key subjects that tar productivity has become oil production research, tertiary oil recovery then is a kind of method that especially effectively improves tar productivity.The method of tertiary oil recovery is a lot, and the importance of tensio-active agent in tertiary oil recovery is more and more obvious.Traditional tensio-active agent comprises sulfonate and carboxylate salt two big classes, because sulfonate and carboxylate salt are easy to form precipitation with positively charged ion, adsorption losses is bigger on rock, is not suitable for using under the high salinity formation condition, and injection is poor, has limited its range of application to a certain extent.
Summary of the invention
The object of the present invention is to provide a kind of preparation method that extra-high-speed salinity oil reservoir improves the used for tertiary oil recovery tensio-active agent of recovery ratio that is applied to.
For achieving the above object, the present invention can take following technical proposals:
The preparation method of used for tertiary oil recovery tensio-active agent of the present invention, it is formulated according to following weight per-cent by the raw material cottonseed dregs of fat, alcohol mixture and sodium hydroxide:
The cottonseed dregs of fat 50～55% of proportioning: pH=9, alcohol mixture 20～25%, the sodium hydroxide solution 25～30% of concentration 20～30%;
The preparation method:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
Storage and using method:
The finished product black out is stored under 0～40 ℃ of envrionment temperature.In order to guarantee that tensio-active agent is not in use adsorbed by rock, before injection, inject xylogen and modified product thereof earlier, make it to be adsorbed by the rock stratum earlier, to reduce the loss of tensio-active agent.Adopt pump formula injection method, before injection, earlier tensio-active agent and water are mixed with the solution of 1:80 after, be injected in the rock stratum with 2～2.5 tons flow per hour.
When referring to be equipped with, the weight percent proportioning of described raw material is: the cottonseed dregs of fat 50% of pH=9, alcohol mixture 25%, the sodium hydroxide solution 25% of concentration 20～30% actual.
The weight percent proportioning of described raw material also can be: the cottonseed dregs of fat 55% of pH=9, alcohol mixture 20%, the sodium hydroxide solution 25% of concentration 20～30%.
The weight percent proportioning of described raw material also can be: the cottonseed dregs of fat 50% of pH=9, alcohol mixture 20%, the sodium hydroxide solution 30% of concentration 20～30%.
The weight percent proportioning of described raw material also can be: the cottonseed dregs of fat 52% of pH=9, alcohol mixture 22%, the sodium hydroxide solution 26% of concentration 20～30%.
The invention has the advantages that to be difficult in the use forming precipitation, can align in solution surface, and can make solution surface tension significantly descend (10
-3), can be applicable to extra-high-speed salinity oil reservoir and improve recovery ratio.The present invention simultaneously is a main raw material with the cottonseed dregs of fat, and synthesis technique is simple, and cost is lower, and application promise in clinical practice is arranged.
When tensio-active agent of the present invention was used in tertiary oil recovery, at saline-alkaline tolerance, heat-resisting property and viscosity retention ratio aspect all were better than other tensio-active agent.
| Title | Saline-alkaline tolerance | Heat-resisting property | Viscosity retention ratio |
| Cottonseed dregs of fat tensio-active agent | 20％～30％ | 80～110℃ | ≥80％ |
| Other tensio-active agent | 4％～5％ | 40～60℃ | ≥70％ |
Embodiment
Embodiment 1:
The preparation method of used for tertiary oil recovery tensio-active agent of the present invention, it is the cottonseed dregs of fat 50% by raw material pH=9, alcohol mixture 25%, the sodium hydroxide solution 25% of concentration 20～30% is formulated:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
The tensio-active agent of the present invention's preparation has solved conventional surfactants and has formed precipitation easily, and injection is poor, and adsorption losses is big on rock, is not suitable for the defective of using under the high salinity formation condition.
Embodiment 2:
The preparation method of used for tertiary oil recovery tensio-active agent of the present invention, it is the cottonseed dregs of fat 55% by raw material pH=9, alcohol mixture 20%, the sodium hydroxide solution 25% of concentration 20～30% is formulated:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
The tensio-active agent of the present invention's preparation has solved conventional surfactants and has formed precipitation easily, and injection is poor, and adsorption losses is big on rock, is not suitable for the defective of using under the high salinity formation condition.
Embodiment 3:
The preparation method of used for tertiary oil recovery tensio-active agent of the present invention, it is the cottonseed dregs of fat 50% by raw material pH=9, alcohol mixture 20%, the sodium hydroxide solution 30% of concentration 20～30% is formulated:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
The tensio-active agent of the present invention's preparation has solved conventional surfactants and has formed precipitation easily, and injection is poor, and adsorption losses is big on rock, is not suitable for the defective of using under the high salinity formation condition.
Embodiment 4:
The preparation method of used for tertiary oil recovery tensio-active agent of the present invention, it is the cottonseed dregs of fat 52% by raw material pH=9, alcohol mixture 22%, the sodium hydroxide solution 26% of concentration 20～30% is formulated:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
The tensio-active agent of the present invention's preparation has solved conventional surfactants and has formed precipitation easily, and injection is poor, and adsorption losses is big on rock, is not suitable for the defective of using under the high salinity formation condition.
Claims (5)
1. the preparation method of a used for tertiary oil recovery tensio-active agent, it is characterized in that: it is formulated according to following weight per-cent by the raw material cottonseed dregs of fat, alcohol mixture and sodium hydroxide:
The cottonseed dregs of fat 50～55% of proportioning: pH=9, alcohol mixture 20～25%, the sodium hydroxide solution 25～30% of concentration 20～30%;
The preparation method:
The first step is put into the stirring tank internal heating with the cottonseed dregs of fat;
In second step, when temperature in the kettle to be stirred rises to 80 ℃, sodium hydroxide solution added in the cottonseed dregs of fat stirred 1 hour;
The 3rd step added alcohol mixture in the above-mentioned stirring tank, stopped heating, stirred that discharging gets product after 30 minutes.
2. the preparation method of used for tertiary oil recovery tensio-active agent according to claim 1 is characterized in that: the weight percent proportioning of described raw material is: the cottonseed dregs of fat 50% of pH=9, alcohol mixture 25%, the sodium hydroxide solution 25% of concentration 20～30%.
3. the preparation method of used for tertiary oil recovery tensio-active agent according to claim 1 is characterized in that: the weight percent proportioning of described raw material is: the cottonseed dregs of fat 55% of pH=9, alcohol mixture 20%, the sodium hydroxide solution 25% of concentration 20～30%.
4. the preparation method of used for tertiary oil recovery tensio-active agent according to claim 1 is characterized in that: the weight percent proportioning of described raw material is: the cottonseed dregs of fat 50% of pH=9, alcohol mixture 20%, the sodium hydroxide solution 30% of concentration 20～30%.
5. the preparation method of used for tertiary oil recovery tensio-active agent according to claim 1 is characterized in that: the weight percent proportioning of described raw material is: the cottonseed dregs of fat 52% of pH=9, alcohol mixture 22%, the sodium hydroxide solution 26% of concentration 20～30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105068996A CN101955769A (en) | 2010-10-14 | 2010-10-14 | Method for preparing surface active agent for tertiary oil recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105068996A CN101955769A (en) | 2010-10-14 | 2010-10-14 | Method for preparing surface active agent for tertiary oil recovery |
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| CN101955769A true CN101955769A (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105068996A Pending CN101955769A (en) | 2010-10-14 | 2010-10-14 | Method for preparing surface active agent for tertiary oil recovery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876311A (en) * | 2012-10-10 | 2013-01-16 | 罗寀宾 | Method for preparing surface active agent for oil |
| CN104371674A (en) * | 2013-07-03 | 2015-02-25 | 中国石油化工集团公司 | Drilling fluid lubricant prepared from waste plant oil and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147007A (en) * | 1996-07-23 | 1997-04-09 | 山东大学 | Oil-displacing agent and its preparing process |
| CN1300811A (en) * | 2000-02-15 | 2001-06-27 | 大庆石油管理局技术开发实业公司 | Process for preparing carboxylate surfactant from natural plant oil for ternary petroleum recovery |
-
2010
- 2010-10-14 CN CN2010105068996A patent/CN101955769A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147007A (en) * | 1996-07-23 | 1997-04-09 | 山东大学 | Oil-displacing agent and its preparing process |
| CN1300811A (en) * | 2000-02-15 | 2001-06-27 | 大庆石油管理局技术开发实业公司 | Process for preparing carboxylate surfactant from natural plant oil for ternary petroleum recovery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876311A (en) * | 2012-10-10 | 2013-01-16 | 罗寀宾 | Method for preparing surface active agent for oil |
| CN104371674A (en) * | 2013-07-03 | 2015-02-25 | 中国石油化工集团公司 | Drilling fluid lubricant prepared from waste plant oil and preparation method thereof |
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Application publication date: 20110126 |