CN102676145B - High-temperature foaming agent and preparation method thereof - Google Patents
High-temperature foaming agent and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-temperature foaming agent and a preparation method thereof, wherein the high-temperature foaming agent is prepared from the following materials in percentage by weight: 40-50% of alpha-olefin sulfonate, 25-35% of aryl alkyl sulfonate, 1-5% of high-temperature foam stabilizer and the balance of water. The preparation method of the high-temperature foaming agent comprises the following steps of: placing alpha-olefin sulfonate and aryl alkyl sulfonate in a mixed kettle, stirring, heating to 45-50 DEG C, adding the high-temperature foam stabilizer and water slowly, stirring continuously for 45-60 minutes, reducing temperature and discharging, thereby obtaining the high-temperature foaming agent. The high-temperature foaming agent provided by the invention has good thermal stability and high foaming and sealing performances under high temperature, and has wide application prospect in thickened oil deposit steam injection heat collecting and steam channeling.
Description
Technical field
The present invention relates to a kind of high-temperature foaming agent and preparation method thereof, relate in particular to the anti-vapour of a kind of heavy crude reservoir heat extraction by steam injection and alter high-temperature foaming agent of use and preparation method thereof, belong to technical field of petroleum extraction.
Background technology
Heavy crude reservoir is at the too much round steam stimulation of warp or proceed to the steam flood stage, along with increase and the prolongation of steam injection time of gas injection rate, there will be steam overlap and vapour to alter phenomenon.Alter once there is vapour, just there will be steam one direction to advance by leaps and bounds, oil reservoir heating is inhomogeneous, and steam carries out invalid channelling at high permeability zone, can not effectively heat the hyposmosis band of enrichment oil, thereby causes that steam swept volume is little, thermo-efficiency is low, deficiency in economic performance.
In order to improve the overall swept volume of steam and heavy crude reservoir ultimate recovery factor, must take effective measure to prevent and treat vapour and alter.Studies have shown that, be accompanied by the agent of steam injection high temperature foam and can improve sweep efficiency and the efficiency of displacement of injecting steam.But so far, the high temperature resistant whipping agent that can be applied to steam stimulation (temperature is greater than 280 ℃) or steam flood (temperature is greater than 300 ℃) is few, is the resistance to elevated temperatures of foaming agent and restrict the key issue that this technology is applied to steam stimulation or steam flood.
For above-mentioned bottleneck problem and the deficiencies in the prior art part, research and develop that a kind of under hot conditions, to have the high-temperature foaming agent that Heat stability is good, foaming and sealing characteristics are strong be one of this area problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of high-temperature foaming agent of altering use for the anti-vapour of viscous crude heat extraction by steam injection, it has the strong feature of Heat stability is good, foaming and sealing characteristics under hot conditions.
The present invention also aims to provide the preparation method of above-mentioned high-temperature foaming agent.
In order to achieve the above object, the invention provides a kind of high-temperature foaming agent, it is a kind of high-temperature foaming agent that can be used in the anti-vapour of viscous crude heat extraction by steam injection and alter use, with the weight percent meter of this high-temperature foaming agent, it comprises following composition: alpha-olefin sodium sulfonate 40-50%, arylalkyl sulfonic acid sodium 25-35%, high temperature foam stablizer 1-5%, all the other are water.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, by weight percentage, the raw material of preparing alpha-olefin sodium sulfonate comprises: sulphur trioxide 15-20%, and alpha-olefin 20-25%, surplus is that mass concentration is 20% sodium hydroxide solution.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, prepare in the raw material of described alpha-olefin sodium sulfonate, alpha-olefin is the mixed olefins of C14 alpha-olefin and C16 alpha-olefin, by weight percentage, C14 alpha-olefin accounts for 40%, C16 alpha-olefin and accounts for 60%.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, by weight percentage, the raw material of preparing described arylalkyl sulfonic acid sodium comprises: toluene 14-16%, alpha-olefin sulfonic acid 47-50%, solid super acid catalyst 1.5-2.0%, surplus is that mass concentration is 20% sodium hydroxide solution.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, to prepare in the raw material of described arylalkyl sulfonic acid sodium, alpha-olefin sulfonic acid is to prepare the product before neutralization in alpha-olefin sodium sulfonate process.Described alpha-olefin sulfonic acid can be prepared by following steps: in reactor, add alpha-olefin, stir, be heated to 45 ℃, then pass into SO
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, to prepare in the raw material of described arylalkyl sulfonic acid sodium, solid super acid catalyst is SO
4 2-/ Fe
2o
3.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, by weight percentage, the raw material of preparing described high temperature foam stablizer comprises: lauryl alcohol 40-45%, and dimethyl dodecyl amine oxide 30-35%, surplus is lauryl alcohol diethanolamine.
The present invention is also to provide a kind of preparation method of above-mentioned high-temperature foaming agent, and it comprises the following steps:
Alpha-olefin sodium sulfonate, arylalkyl sulfonic acid sodium, high temperature foam stablizer are positioned in mixing kettle, stir, be warming up to 45 ℃, add water, continue to stir 45-60 minute, cooling discharge obtains described high-temperature foaming agent.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, the preparation process of described alpha-olefin sodium sulfonate comprises the following steps:
First in reactor, add alpha-olefin, stir, be heated to 45 ℃, then pass into SO
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid;
In product (being alpha-olefin sulfonic acid) after aging, slowly drip the sodium hydroxide solution that mass concentration is 20% and carry out neutralization reaction, in reaction process, control temperature and be no more than 55 ℃, react complete, stir 30 minutes, obtain the alpha-olefin sodium sulfonate of Partial Conversion;
The alpha-olefin sodium sulfonate product of Partial Conversion is transferred in autoclave, stirs, be heated to 160-175 ℃ and maintenance, the pressure-controlling in autoclave, at 1.0MPa, is hydrolyzed after 30 minutes, and cooling discharge obtains described alpha-olefin sodium sulfonate.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, the preparation process of described arylalkyl sulfonic acid sodium comprises the following steps:
First in reactor, add toluene, alpha-olefin sulfonic acid, solid super acid catalyst, be slowly heated to 135-145 ℃ and keep, in the time that the acid number of reactant is constant, stop heating, obtain brown viscous liquid;
Then the NaOH solution that is 20% by mass concentration carries out neutralization reaction, and in reaction process, temperature is no more than 55 ℃, while being neutralized to pH value for 8-9, stops, and cooling discharge obtains described arylalkyl sulfonic acid sodium.
According to specific embodiment of the invention scheme, preferably, in above-mentioned high-temperature foaming agent, the preparation process of described high temperature foam stablizer comprises the following steps:
In mixing kettle, add lauryl alcohol, dimethyl dodecyl amine oxide, lauryl alcohol diethanolamine, be heated to 60 ℃, stir and mix for 30 minutes, cooling discharge obtains described high temperature foam stablizer.
The preparation method that the present invention is applicable to the high-temperature foaming agent that the anti-vapour of viscous crude heat extraction by steam injection alters is divided into following four steps and completes:
1. the preparation of alpha-olefin sodium sulfonate
First in reactor, add the alpha-olefin of 20-25wt%, stir, be heated to 45 ℃, then pass into the SO of 15-20wt%
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid; In product (being alpha-olefin sulfonic acid) after aging, slowly dripping surplus mass concentration is that 20% sodium hydroxide solution carries out neutralization reaction, in reaction process, control temperature and be no more than 55 ℃, react complete, stir 30 minutes, obtain the alpha-olefin sodium sulfonate of Partial Conversion; The alpha-olefin sodium sulfonate of Partial Conversion is transferred in autoclave, stirring heating be warming up to hydrolysising reacting temperature 160-175 ℃ and keep, pressure-controlling near 1.0MPa, be hydrolyzed after 30 minutes, cooling discharge obtains alpha-olefin sodium sulfonate.
2. the preparation of arylalkyl sulfonic acid sodium
First in reactor, add the toluene of 14-16wt%, the alpha-olefin sulfonic acid of 47-50wt%, the solid super acid catalyst of 1.5-2.0wt%, slowly be heated to temperature of reaction 135-145 ℃ and maintenance, in reaction process, measure the acid number of system, until constant, stop heating, obtain brown viscous liquid; The NaOH solution neutralization reaction that is 20% by surplus mass concentration, in reaction process, temperature is no more than 55 ℃, stopped reaction while being neutralized to pH value for 8-9, cooling discharge obtains arylalkyl sulfonic acid sodium.
3. the preparation of high temperature foam stablizer
First in mixing kettle, add the lauryl alcohol of 40-50wt%, dimethyl dodecyl amine oxide and the surplus lauryl alcohol diethanolamine of 30-35wt%, be heated to 60 ℃, stir and mix for 30 minutes, cooling discharge obtains high temperature foam stablizer.
4. the preparation of high-temperature foaming agent
Finally, be applicable to the anti-vapour of viscous crude heat extraction by steam injection according to preparation and alter the weight percent that the high-temperature foaming agent of use is filled a prescription: alpha-olefin sodium sulfonate 40-50%, arylalkyl sulfonic acid sodium 20-30%, high temperature foam stablizer 1-5%, be positioned in mixing kettle, stir, be warming up to 45 ℃, slowly add water, continue to stir 45-60 minute, cooling discharge obtains the high-temperature foaming agent that injection for heavy oil reservoir steam heat adopts.
The present invention also provides the purposes of above-mentioned high-temperature foaming agent in the anti-vapour of heavy crude reservoir heat extraction by steam injection is altered.This high-temperature foaming agent has the strong feature of Heat stability is good, foaming and sealing characteristics under hot conditions, apply it to during the anti-vapour of heavy crude reservoir heat extraction by steam injection alters, can realize and in viscous crude heat extraction by steam injection process, prevent and treat vapour and alter, expand the swept volume of injecting steam, thereby reach the object that improves recovery factor of heavy oil reservoir.
Compared with existing high-temperature foaming agent, high-temperature foaming agent of the present invention has following outstanding advantages:
1. in described high-temperature foaming agent, being preferably that raw material is synthetic with a certain proportion of C14 alpha-olefin and C16 alpha-olefin prepares alpha-olefin sodium sulfonate, can take into account the high-foaming performance of C14 alpha-olefin sodium sulfonate and the strong froth stability of C16 alpha-olefin sodium sulfonate;
2. in described high-temperature foaming agent, another becomes the sulfonate radical of the arylalkyl sulfonic acid sodium of component selections to be connected to alkyl end, be different from traditional sodium alkylarysulfonate (as Sodium dodecylbenzene sulfonate), its solvability in the aqueous solution is better, high-temperature stability strengthens, and biological degradability is better;
3. in described high temperature foam agent, select a certain proportion of lauryl alcohol, dimethyl dodecyl amine oxide and lauryl alcohol diethanolamine as high temperature foam stablizer, by the synergy between different surfaces promoting agent, can play the effect of reinforced foam Film strength, thereby improve the stability of foam;
4. described in, high-temperature foaming agent, under 300 ℃ of conditions of high temperature, has good thermo-chemical stability, aging 96h under 300 ℃ of conditions, and the degradation rate of host sulfonate is less than 15%, and stability is significantly better than like product;
5. described in, high-temperature foaming agent foaming power is strong, 300 ℃ aging after, initial gas release still can reach the more than 6 times of stoste volume, foaming power is significantly better than like product;
6. described in, high-temperature foaming agent froth stability is good, 300 ℃ aging after, more than half foam life period still can reach 6h, froth stability is significantly better than like product;
7. described in, under high-temperature foaming agent high temperature, the resistance factor of (200 ℃) reaches more than 17.0, and high temperature sealing characteristics is significantly better than like product;
8. described in, two of high-temperature foaming agent kinds of host alpha-olefin sodium sulfonates and arylalkyl sulfonic acid sodium are all anion sulfoacid salt tensio-active agents, have reduced the possibility that " chromatographic separation " occurs in stratum.
Due to the above outstanding advantages of described high temperature foam agent, this high temperature foam agent can realize and in viscous crude heat extraction by steam injection process, prevent and treat vapour and alter, expand the swept volume of injecting steam, thereby reaches the object that improves recovery factor of heavy oil reservoir.
Embodiment
Further illustrate technical scheme of the present invention below by concrete Preparation Example and experimental example, but can not be interpreted as any restriction to the scope of the present invention.
Prepare further illustrating of high temperature foam stablizer raw material: lauryl alcohol, be commonly used for tensio-active agent and suds-stabilizing agent, Zhengzhou is made every effort to overcome Chemical Co., Ltd. and is produced; Dimethyl dodecyl amine oxide, is commonly used for tensio-active agent and suds-stabilizing agent, and Tianjin auxiliary reagent factory produces; Lauryl alcohol diethanolamine, is commonly used for tensio-active agent and suds-stabilizing agent, and Jiangsu Hai'an Petrochemical Plant produces.
Embodiment 1:
1. the preparation of alpha-olefin sodium sulfonate
First in reactor, add the alpha-olefin (wherein C14 alpha-olefin accounts for 40wt%, and C16 alpha-olefin accounts for 60wt%) of 20wt%, stir, be heated to 45 ℃, then pass into the SO of 15wt%
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid;
In product (being alpha-olefin sulfonic acid) after aging, slowly dripping mass concentration is that 20% sodium hydroxide solution carries out neutralization reaction, in reaction process, control temperature and be no more than 55 ℃, react complete, stir 30 minutes, obtain alpha-olefin sodium sulfonate intermediate product (the alpha-olefin sodium sulfonate of Partial Conversion);
Alpha-olefin sodium sulfonate intermediate product is transferred in autoclave, stir, be heated to hydrolysising reacting temperature 160-175 ℃ and keep, pressure-controlling near 1.0MPa, be hydrolyzed after 30 minutes, cooling discharge obtains alpha-olefin sodium sulfonate.
2. the preparation of arylalkyl sulfonic acid sodium
First in reactor, add the toluene of 14wt%, the alpha-olefin sulfonic acid of 47wt%, the solid super acid catalyst of 1.5wt%, slowly be heated to temperature of reaction 135-145 ℃ and maintenance, in reaction process, measure the acid number of system, until constant, stop heating, obtain brown viscous liquid, the NaOH solution neutralization reaction that is 20% by mass concentration, in reaction process, temperature is no more than 55 ℃, stopped reaction while being neutralized to pH value for 8-9, and cooling discharge obtains arylalkyl sulfonic acid sodium.
3. the preparation of high temperature foam stablizer
First the lauryl alcohol, the dimethyl dodecyl amine oxide of 35wt% and the lauryl alcohol diethanolamine of surplus that in mixing kettle, add 40wt%, be heated to 60 ℃, stirs and mix for 30 minutes, and cooling discharge obtains high temperature foam stablizer.
4. the preparation of high-temperature foaming agent
Be applicable to the anti-vapour of viscous crude heat extraction by steam injection according to preparation and alter the weight percent that the high-temperature foaming agent of use is filled a prescription: alpha-olefin sodium sulfonate 45%, arylalkyl sulfonic acid sodium 25%, high temperature foam stablizer 1-5%, be positioned in mixing kettle, stir, be warming up to 45 ℃, slowly add water, continue to stir 45-60 minute, cooling discharge obtains the high-temperature foaming agent that injection for heavy oil reservoir steam heat adopts.
The resistance factor that the high-temperature foaming agent product obtaining is carried out under sulfonate degradation rate, aging rear half foam life period, aging rear initial foam expansion and high temperature is measured.Adopt two-phase titration to measure the variation of high-temperature foaming agent effective content after high temperature ageing, and then calculate the degradation rate of sulfonate.Adopt half foam life period and the initial foam expansion of Waring Blender method test high-temperature foaming agent after high temperature ageing.When test, the high-temperature foaming agent solution of the certain mass mark that 100mL is prepared is poured in Waring agitator, under 6500r/min rotating speed, stirs 1min, and foam is poured in 1000mL graduated cylinder, read initial lather volume and lather volume and decay the half time used, be the transformation period.
Adopt the resistance factor of dynamic evaluation experimental device to test product, this device is one dimension single tube model, and model is placed horizontally in thermostat container baking oven, the long 50.0cm of rock core, diameter 3.0cm.When test, first by rock core water saturation, survey rock core water phase permeability, then simultaneously gentle to injected water in rock core by certain vapour-liquid ratio, in the time that the pressure reduction at rock core two ends reaches steady, record the pressure reduction at rock core two ends now as basic pressure reduction.Then under the same conditions, injected gas and whipping agent, in the time that the pressure reduction at rock core two ends reaches balance, record the pressure reduction at rock core two ends now again as operting differential pressure.Resistance factor is the ratio of operting differential pressure and basic pressure reduction.Resistance factor test condition is: 200 ℃ of temperature, vapour-liquid ratio 1: 1, nitrogen pressure 2.0MPa.
Above testing method please refer to " performance study of Fleeing Proof Agent for Heavy Oil Thermal Recovery Under High Temperature " (Guo Donghong, Xin Haochuan, Cui Xiaodong etc. the performance study [J] of Fleeing Proof Agent for Heavy Oil Thermal Recovery Under High Temperature. Speciality Petrochemicals progress, 2006,7 (10): 1-3.) and " research and the application of the spontaneous carbon dioxide foaming send in and out of super viscous crude " (Zhang Shoujun, Guo Donghong. the research of the spontaneous carbon dioxide foaming send in and out of super viscous crude and application [J], oil drilling technology, 2009,37 (5): 101-104.), experimental result is as shown in table 1:
The various the performance test results of table 1 high-temperature foaming agent
| Project | Test result |
| Degradation rate after 300 ℃ of aging 96h | 14.6％ |
| After 300 ℃ of aging 96h, 100mL, the initial foam expansion of 0.5% foaming agent solution | 6.4 |
| After 300 ℃ of aging 96h, the transformation period of 0.5% foaming agent solution | 6.0h |
| 200 ℃, the resistance factor of 0.5% foaming agent solution | 17.2 |
Embodiment 2:
1. the preparation of alpha-olefin sodium sulfonate
First in reactor, add the alpha-olefin (wherein C14 alpha-olefin accounts for 40wt%, and C16 alpha-olefin accounts for 60wt%) of 25wt%, stir, be heated to 45 ℃, then pass into the SO of 20wt%
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid;
In product (being alpha-olefin sulfonic acid) after aging, slowly dripping surplus mass concentration is that 20% sodium hydroxide solution carries out neutralization reaction, in reaction process, control temperature and be no more than 55 ℃, react complete, stir 30 minutes, obtain alpha-olefin sodium sulfonate intermediate product (the alpha-olefin sodium sulfonate of Partial Conversion);
Alpha-olefin sodium sulfonate intermediate product is transferred in autoclave, stir, be heated to hydrolysising reacting temperature 160-175 ℃ and keep, pressure-controlling near 1.0MPa, be hydrolyzed after 30 minutes, cooling discharge obtains alpha-olefin sodium sulfonate.
2. the preparation of arylalkyl sulfonic acid sodium
First in reactor, add the toluene of 16wt%, the alpha-olefin sulfonic acid of 49wt%, the solid super acid catalyst of 2.0wt%, slowly be heated to temperature of reaction 135-145 ℃ and maintenance, in reaction process, measure the acid number of system, until constant, stop heating, obtain brown viscous liquid, the NaOH solution neutralization reaction that is 20% by surplus mass concentration, in reaction process, temperature is no more than 55 ℃, stopped reaction while being neutralized to pH value for 8-9, and cooling discharge obtains arylalkyl sulfonic acid sodium.
3. the preparation of high temperature foam stablizer
First the lauryl alcohol, the dimethyl dodecyl amine oxide of 30wt% and the lauryl alcohol diethanolamine of surplus that in mixing kettle, add 45wt%, be heated to 60 ℃, stirs and mix for 30 minutes, and cooling discharge obtains high temperature foam stablizer.
4. the preparation of high-temperature foaming agent
Finally, be applicable to the anti-vapour of viscous crude heat extraction by steam injection according to preparation and alter the weight percent that the high-temperature foaming agent of use is filled a prescription: alpha-olefin sodium sulfonate 50%, arylalkyl sulfonic acid sodium 20%, high temperature foam stablizer 4%, be positioned in mixing kettle, start stirring, be warming up to 45 ℃, slowly add water, continue to stir 45-60 minute, cooling discharge obtains the high-temperature foaming agent that injection for heavy oil reservoir steam heat adopts.
The high-temperature foaming agent product obtaining is carried out to the resistance factor test under sulfonate degradation rate, aging rear half foam life period, aging rear initial foam expansion and high temperature, and testing method is identical with embodiment 1, and experimental result is as shown in table 2:
The various the performance test results of table 2 high-temperature foaming agent
| Project | Test result |
| Degradation rate after 300 ℃ of aging 96h | 13.8％ |
| After 300 ℃ of aging 96h, 100mL, the initial foam expansion of 0.5% foaming agent solution | 6.5 |
| After 300 ℃ of aging 96h, the transformation period of 0.5% foaming agent solution | 6.2h |
| 200 ℃, the resistance factor of 0.5% foaming agent solution | 17.8 |
Can find out that by above experimental result high-temperature foaming agent provided by the present invention has Heat stability is good, foaming and sealing characteristics strong.Under 200 ℃ of conditions, resistance factor reaches more than 17.0, in the anti-vapour of heavy crude reservoir heat extraction by steam injection is altered, has broad application prospects.
Claims (11)
1. a high-temperature foaming agent, with the weight percent meter of this high-temperature foaming agent, it comprises following composition: alpha-olefin sodium sulfonate 40-50%, arylalkyl sulfonic acid sodium 25-35%, high temperature foam stablizer 1-5%, all the other are water;
Wherein, by weight percentage, the raw material of preparing described high temperature foam stablizer comprises: lauryl alcohol 40-45%, and dimethyl dodecyl amine oxide 30-35%, surplus is lauryl alcohol diethanolamine.
2. high-temperature foaming agent as claimed in claim 1, wherein, by weight percentage, the raw material of preparing described alpha-olefin sodium sulfonate comprises: sulphur trioxide 15-20%, alpha-olefin 20-25%, surplus is that mass concentration is 20% sodium hydroxide solution.
3. high-temperature foaming agent as claimed in claim 1, wherein, by weight percentage, the raw material of preparing described arylalkyl sulfonic acid sodium comprises: toluene 14-16%, alpha-olefin sulfonic acid 47-50%, solid super acid catalyst 1.5-2.0%, surplus is that mass concentration is 20% sodium hydroxide solution.
4. high-temperature foaming agent as claimed in claim 1 or 2, wherein, prepares in the raw material of described alpha-olefin sodium sulfonate, and alpha-olefin is the mixed olefins of C14 alpha-olefin and C16 alpha-olefin, and by weight percentage, C14 alpha-olefin accounts for 40%, C16 alpha-olefin and accounts for 60%.
5. high-temperature foaming agent as claimed in claim 3, wherein, prepares in the raw material of described arylalkyl sulfonic acid sodium, and alpha-olefin sulfonic acid is to prepare the product before neutralization in alpha-olefin sodium sulfonate process.
6. the high-temperature foaming agent as described in claim 3 or 5, wherein, prepares in the raw material of described arylalkyl sulfonic acid sodium, and solid super acid catalyst is SO
4 2-/ Fe
2o
3.
7. the preparation method of the high-temperature foaming agent described in claim 1-6 any one, it comprises the following steps:
Alpha-olefin sodium sulfonate, arylalkyl sulfonic acid sodium, high temperature foam stablizer are positioned in mixing kettle, stir, be warming up to 45 ℃, add water, continue to stir 45-60 minute, cooling discharge obtains described high-temperature foaming agent.
8. preparation method as claimed in claim 7, wherein, the preparation process of described alpha-olefin sodium sulfonate comprises the following steps:
First in reactor, add alpha-olefin, stir, be heated to 45 ℃, then pass into SO
3carry out sulfonation reaction, when the complete temperature of question response no longer raises, aging 45 minutes and maintain the temperature at 45 ℃-50 ℃, obtain alpha-olefin sulfonic acid;
In product after aging, slowly drip the sodium hydroxide solution that mass concentration is 20% and carry out neutralization reaction, in reaction process, control temperature and be no more than 55 ℃, react complete, stir 30 minutes, obtain the alpha-olefin sodium sulfonate of Partial Conversion;
The alpha-olefin sodium sulfonate of Partial Conversion is transferred in autoclave, stirs, be heated to 160-175 ℃ and maintenance, the pressure-controlling in autoclave, at 1.0MPa, is hydrolyzed after 30 minutes, and cooling discharge obtains described alpha-olefin sodium sulfonate.
9. preparation method as claimed in claim 7 or 8, wherein, the preparation process of described arylalkyl sulfonic acid sodium comprises the following steps:
First in reactor, add toluene, alpha-olefin sulfonic acid, solid super acid catalyst, be slowly heated to 135-145 ℃ and keep, in the time that the acid number of reactant is constant, stop heating, obtain brown viscous liquid;
Then the NaOH solution that is 20% by mass concentration carries out neutralization reaction, and in reaction process, temperature is no more than 55 ℃, while being neutralized to pH value for 8-9, stops, and cooling discharge obtains described arylalkyl sulfonic acid sodium.
10. preparation method as claimed in claim 7, wherein, the preparation process of described high temperature foam stablizer comprises the following steps:
In mixing kettle, add lauryl alcohol, dimethyl dodecyl amine oxide, lauryl alcohol diethanolamine, be heated to 60 ℃, stir and mix for 30 minutes, cooling discharge obtains described high temperature foam stablizer.
The purposes of high-temperature foaming agent described in 11. claim 1-6 any one in the anti-vapour of heavy crude reservoir heat extraction by steam injection is altered.
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| CN104109520B (en) * | 2013-04-22 | 2017-01-25 | 中国石油化工股份有限公司 | Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof |
| CN106437650A (en) * | 2015-08-05 | 2017-02-22 | 中国石油化工股份有限公司 | Foam-agent-assisted steam flooding method for increasing recovery rate of heavy oil reservoir with edge water |
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|---|---|---|---|---|
| CN101224957A (en) * | 2008-02-01 | 2008-07-23 | 中国日用化学工业研究院 | Foaming agent for civil construction as well as preparation method and use thereof |
| CN102212356A (en) * | 2011-04-08 | 2011-10-12 | 西安石油大学 | High temperature foaming agent |
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| CN102676145A (en) | 2012-09-19 |
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