CN106281284B - A kind of foam flooding foaming agent and preparation method thereof - Google Patents
A kind of foam flooding foaming agent and preparation method thereof Download PDFInfo
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- CN106281284B CN106281284B CN201510307788.5A CN201510307788A CN106281284B CN 106281284 B CN106281284 B CN 106281284B CN 201510307788 A CN201510307788 A CN 201510307788A CN 106281284 B CN106281284 B CN 106281284B
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- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
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Abstract
The invention discloses a kind of suitable foam flooding foaming agents and preparation method thereof.Using alkyl acyl propylsultaine glycine betaine as basic component, mass percent are as follows: 2%~40%；Aliphatic alcohol polyoxyethylene sulfonate mass percent are as follows: 1%~20%；Alkyl betaine mass percent are as follows: 1%~10%；Fluorine carbon surfactant qualities percentage are as follows: 1%~5%；Water surplus.At 50 DEG C, be slowly stirred to be completely dissolved to get.At 80~100 DEG C, 80000ppm, foaming volume is up to 650mL or more, and for half foam life period in 28min or more, indoor simulation improves recovery ratio up to 16% or more.Frothing capacity of the present invention is excellent, and can form stable foam, has the abilities such as stronger heatproof, salt resistance, meets the needs of oil field development.
Description
Technical field
It is suitable for oilfield exploitation the present invention relates to one kind to use, there is excellent heatproof, anti-salt property and excellent foaming characteristic
With the foam flooding foaming agent of foam stability and preparation method thereof.
Background technique
Foam flooding is due to its good sealing characteristics and to the selectivity of grease, it is considered to be one very promising
Tertiary oil recovery mode.The main mechanism of oil recovery factor is improved to be improved displacement of reservoir oil sweep area (sweep efficiency) and improve the displacement of reservoir oil
Two aspects of efficiency.Aerated fluid has both characteristics simultaneously.Foam flooding is to utilize various gases (nitrogen, carbon dioxide, sky
Gas or other gases) with foaming agent it is mixed to form displacement method of the foam as body medium, foam has selective shut-off, blocks up
The characteristic of the not stifled oil of water, blocking high not low blocking.
Document records Fried in 1956 and has carried out research to foam flooding for the first time, and Bond in 1958 et al. has delivered the world
The patent of upper first part of foam flooding, American Association oil company is in the Illinois oil field Siggins within 1964 to 1967
It carries out, achieves good effect water-oil factor from 15% and drop to 12%.1994,3 examinations of Britain and Norway in North Sea oil field
The experimental study that area has carried out foam 4 years by a definite date is tested, foam is had studied and high GOR is made at the improvement for producing well coning and fingering
With.
China's nineteen sixty-five has carried out domestic first foam test in Yumen over-aged bulk carriers, has certain effect, but raw
Occurrence condition is undesirable.Baise Oilfield is tested with the air foam displacement of reservoir oil has been carried out within 1996, is had received good water-control oil-increasing and is mentioned
The effect of high recovery rate.The foam composite flooding of Daqing oil field is made of alkali, surfactant, polymer, and natural gas is as injection
Gas also receives good recovery ratio.Shengli Oil Field in 2003 in isolated island 28-8 well injection reinforcing foam carry out oil displacement test,
Achieve preferable effect.
China Patent No. discloses a kind of " acidity CO for 201310212134.52The efficient foaming agent of foam fracturing system ",
It is formulated are as follows: zwitterionic surfactant A 38-42%, zwitterionic surfactant B 40-45%, amphoteric gemini surface are living
Property agent 5-8%, high molecular polymer 0.3-0.5%, surplus be solvent.Suitable for Ordos Basin gas well acidity CO2Foam pressure
Split system.The shortcomings that system or deficiency are that foamability is general, temperature resistant capability is limited (only 20-80 DEG C).
China Patent No. discloses " a kind of foaming agent used in composite-foam oil flooding " for 201010283154.8, is formulated are as follows:
Hydroxyl sulfo betaine 0.2-0.4%, 1227 are 0.1%, lauryl alcohol 0.04-0.1%, and surplus is water flooding.The foaming agent lacks
Point or deficiency are that temperature resistance is poor (only 50 DEG C).
China Patent No. is 201010521953.4 to disclose " a kind of temperature-resistant anti-salt low-tension foam flooding finish and its preparation
Method ", preparation method are as follows: continued stirring until at 40-60 DEG C completely by alkanolamide, bipolarity based surfactants and water
Dissolution system.The shortcomings that system or deficiency are that foam stability is poor (half foam life period is only 40 minutes at 50 DEG C).
It is all unsatisfactory from the point of view of at present it has been reported that obtaining the subsequent popularization in the oil field of preferable spot effect, popularization
Dynamics is smaller, and reason mainly has the following: 1, not yet establishing the system standard of foam flooding at present；2, bubble is mainly reported at present
Foam drives advantageous data, and for the weakness and problem of foam flooding, research is few, affects the effect and popularization of foam flooding；3, it steeps
Foam stability is poor, temperature-resistant anti-salt scarce capacity, meet oil defoaming, oil displacement efficiency is lower than polymer；4, surfactant is largely inhaled
It is attached to rock surface, reduces oil displacement efficiency etc..
Summary of the invention
The purpose of the present invention is for most of foaming agent foam is indifferent, foam stability is poor at present the deficiencies of it
Place, prepares one kind as the composition of foaming agent using betaines, polyether sulfonate class and fluorine carbon surfactant
Foaming capacity is strong, foam stability is good, while having good temperature-resistant anti-salt performance, the foaming body used suitable for the oil field displacement of reservoir oil
System.
The present invention is by percentage to the quality: alkyl acyl propylsultaine glycine betaine mass percent are as follows: 2%~40%；Fatty alcohol
Polyethenoxy ether sulphonate mass percent are as follows: 1%~20%；Alkyl betaine mass percent are as follows: 1%~10%；Fluorine carbon
Surfactant qualities percentage are as follows: 1%~5%；Water surplus.
Alkyl acyl propylsultaine glycine betaine molecular formula are as follows: CnH2n+1CONH(CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -,
In: n=12~20；
Sodium sulfate of polyethenoxy ether of fatty alcohol molecular formula are as follows: CnH2n+1O(CH2CH2O)mSO3Na, in which: n=10~18, m
=3~20；
Alkyl betaine molecular formula are as follows: CnH2n+1N+(CH3)2CH2COO-, in which: n=12~18；
Fluorine carbon surfactant molecule formula are as follows: CnF2n+1COONa, wherein n=6~8.
Preferably, each component molecular formula is as follows by the present invention:
Alkyl acyl propylsultaine glycine betaine molecular formula are as follows: CnH2n+1CONH(CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -,
In: n is 14~18；
Sodium sulfate of polyethenoxy ether of fatty alcohol molecular formula are as follows:
CnH2n+1O(CH2CH2O)mSO3Na, in which: n is that 12~16, m is 4~6；
Alkyl betaine molecular formula are as follows:
CnH2n+1N+(CH3)2CH2COO-, in which: n is 14~18.
It is provided by the invention the preparation method comprises the following steps: by abovementioned alkyl acyl propylsultaine glycine betaine, fatty alcohol polyoxyethylene ether sulphur
Sour sodium, alkyl betaine, fluorine carbon surfactant, are added to the water, stirred at low speed at 50 DEG C to be completely dissolved to get.
The present invention uses Roche foam meter, the foaming characteristic and foam stability of foaming agent is evaluated, in 80~100 DEG C, salinity
80000ppm, foaming volume is up to 650mL or more, and half foam life period is in 28min or more.Indoor simulation improves recovery ratio and reaches
16% or more.
Frothing capacity of the present invention is excellent, and can form stable foam, has the abilities such as stronger heatproof, salt resistance, full
The needs of sufficient oil field development.
Specific embodiment
Embodiment 1:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=16) 4.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
12, m=4) 1.0g, alkyl betaine (n=14) 1.0g, fluorine carbon surfactant 0.5g, are added sequentially in 43.5g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 80000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 100 DEG C using Roche foam meter is 652mL, half foam life period 37min.Room
Interior simulation improves recovery ratio up to 18%.
Embodiment 2:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=18) 5.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
14, m=6) 0.8g, alkyl betaine (n=16) 1.0g, fluorine carbon surfactant 0.6g, are added sequentially in 42.6g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 80000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 80 DEG C using Roche foam meter is 665mL, half foam life period 32min.It is indoor
Simulation improves recovery ratio up to 21%.
Embodiment 3:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=14) 3.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
14, m=4) 1.0g, alkyl betaine (n=16) 0.6g, fluorine carbon surfactant 0.5g, are added sequentially in 44.9g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 80000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 80 DEG C using Roche foam meter is 655mL, half foam life period 41min.It is indoor
Simulation improves recovery ratio up to 24%.
Embodiment 4:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=18) 4.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
16, m=4) 1.5g, alkyl betaine (n=18) 0.8g, fluorine carbon surfactant 0.8g, are added sequentially in 42.9g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 80000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 90 DEG C using Roche foam meter is 687mL, half foam life period 35min.It is indoor
Simulation improves recovery ratio up to 16%.
Embodiment 5:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=14) 8.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
14, m=4) 2.5g, alkyl betaine (n=14) 0.6g, fluorine carbon surfactant 0.4g, are added sequentially in 38.5g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 80000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 80 DEG C using Roche foam meter is 662mL, half foam life period 28min.It is indoor
Simulation improves recovery ratio up to 17%.
Embodiment 6:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=16) 10.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
16, m=4) 1.2g, alkyl betaine (n=18) 1.0g, fluorine carbon surfactant 0.6g, are added sequentially in 37.2g water, delay
Slow stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 50000ppm with salinity is configured to mass concentration
For 0.5% solution, measuring foam volume at 100 DEG C using Roche foam meter is 675mL, half foam life period 30min.Room
Interior simulation improves recovery ratio up to 19%.
Embodiment 7:
Successively accurately weigh alkyl acyl propylsultaine glycine betaine (n=14) 8.0g, sodium sulfate of polyethenoxy ether of fatty alcohol (n=
12, m=4) 2.5g, alkyl betaine (n=14) 1.0g, fluorine carbon surfactant 0.5g, are added sequentially in 38g water, slowly
Stirring to each component is completely dissolved.The 0.5g sample is taken, the simulation water for being 50000ppm with salinity is configured to mass concentration and is
0.5% solution, measuring foam volume at 100 DEG C using Roche foam meter is 670mL, half foam life period 35min.It is indoor
Simulation improves recovery ratio up to 16%.
Claims (4)
1. a kind of foam flooding foaming agent, it is characterised in that each component mass percent is as follows:
Alkyl acyl propylsultaine glycine betaine 2%~40%
Sodium sulfate of polyethenoxy ether of fatty alcohol 1%~20%
Alkyl betaine 1%~10%
Fluorine carbon surfactant 1%~5%
Water surplus；
The alkyl acyl propylsultaine glycine betaine molecular formula are as follows: CnH2n+1CONH(CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -,
In: n=12~20；
The sodium sulfate of polyethenoxy ether of fatty alcohol molecular formula are as follows: CnH2n+1O(CH2CH2O)mSO3Na, in which: n=10~18, m
=3~20；
The alkyl betaine molecular formula are as follows: CnH2n+1N+(CH3)2CH2COO-, in which: n=12~18；
The fluorine carbon surfactant molecule formula are as follows: CnF2n+1COONa, wherein n=6~8.
2. foaming agent as described in claim 1, it is characterised in that each component molecular formula is as follows:
Alkyl acyl propylsultaine glycine betaine molecular formula are as follows: CnH2n+1CONH(CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -, in which: n
It is 14~18；
Sodium sulfate of polyethenoxy ether of fatty alcohol molecular formula are as follows:
CnH2n+1O(CH2CH2O)mSO3Na, in which: n is that 12~16, m is 4~6；
Alkyl betaine molecular formula are as follows:
CnH2n+1N+(CH3)2CH2COO-, in which: n is 14~18.
3. the preparation method of foaming agent as described in claim 1, it is characterised in that the preparation method comprises the following steps: by abovementioned alkyl acyl propyl sulphur
Base glycine betaine, sodium sulfate of polyethenoxy ether of fatty alcohol, alkyl betaine, fluorine carbon surfactant, are added to the water, at 50 DEG C
Stir at low speed to be completely dissolved to get.
4. foaming agent described in claim 1, it is characterised in that the foaming agent is used for 80~100 DEG C, salinity 0-
Tertiary oil recovery under the conditions of 80000ppm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107880865B (en) * | 2017-11-01 | 2020-03-10 | 中国石油天然气股份有限公司 | Low-interfacial-tension foam oil displacement agent and preparation method thereof |
| CN112812761A (en) * | 2021-01-15 | 2021-05-18 | 四川省威沃敦化工有限公司 | Foaming agent with high temperature resistance, high salt content and high condensate oil content as well as preparation method and application thereof |
| CN116064015B (en) * | 2023-04-06 | 2023-06-09 | 中国石油大学(华东) | Salt-sensitive self-crosslinking gel foam system and preparation method and application thereof |
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| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
| CN102504788A (en) * | 2011-10-25 | 2012-06-20 | 中国石油天然气股份有限公司 | Foaming agent suitable for oil-field development |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8567499B2 (en) * | 2009-08-04 | 2013-10-29 | Schlumberger Technology Corporation | Gelled liquid hydrocarbon treatment fluids and their associated methods of use |
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| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
| CN102504788A (en) * | 2011-10-25 | 2012-06-20 | 中国石油天然气股份有限公司 | Foaming agent suitable for oil-field development |
| CN103497751A (en) * | 2013-10-12 | 2014-01-08 | 陕西延长石油(集团)有限责任公司研究院 | High-efficiency air foam oil displacement system |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |