CN107916098A - Displacement of reservoir oil Surfactant Used in Viscoelastic Fracturing Fluids composition and its preparation method and application - Google Patents
Displacement of reservoir oil Surfactant Used in Viscoelastic Fracturing Fluids composition and its preparation method and application Download PDFInfo
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Abstract
The application of oil displacement agent is used as by the use of the composition of Surfactant Used in Viscoelastic Fracturing Fluids and the composition the present invention relates to a kind of displacement of reservoir oil.Mainly solve the problems, such as that there are oil displacement efficiency under the conditions of hypotonic in high temperature is low for surfactant in the prior art, the present invention is by using the composition for displacement of reservoir oil Surfactant Used in Viscoelastic Fracturing Fluids, including amphoteric surfactant and acylate described in formula (I)：At least one of the acylate of the acylate in formula shown in (II)；R in formula (I)1Selected from C8~C29Alkyl, at least one of alkenyl, the R2And R3It is independently chosen from C1~C5Alkylidene, at least one of hydroxyl substituted alkylene；X is selected from least one of carboxylate radical, sulfonate radical in formula (II), and Y is selected from the technical solution of at least one of hydrogen, alkyl, hydroxyl, halogen, preferably resolves the technical problem, available in the displacement of reservoir oil production in oil field.
Description
Technical field
The present invention relates to synthesis of the displacement of reservoir oil by the use of the composition of Surfactant Used in Viscoelastic Fracturing Fluids and the composition to be used as the displacement of reservoir oil
The application of agent.
Background technology
With increasing rapidly for national economy, domestic petroleum disparities between supply and demand become increasingly conspicuous, and are mainly shown as petroleum resources phase
It is relatively low that the growth of demand, the recovery percent of reserves ratio of crude oil are not caught up with to poorer, oil exploration and development and proved reserves.To alleviate
China's oil scarcity of resources, reduce crude output notch, ensure China's oil safety, it is necessary to which one of important measures taken are exactly
Increase substantially the recovery ratio of crude oil in China.For example, the average recovery ratio of Sinopec is only 28% at present, still have more than
70% petroleum resources fail to obtain effective exploitation utilization, cause a large amount of remaining reserves to be retained in underground.How further to tap the latent power
Synergy, carry out tertiary oil recovery, it has also become one of problem urgently to be resolved hurrily.
In tertiary oil recovery technology, chemical flooding is main attack technology and the direction that recovery ratio is improved in China, including caustic waterflooding, table
Face surfactant flooding (micella drives and microemulsion drives), polymer flooding and combination flooding.In these chemical flooding technologies, all it be unable to do without efficient
Surfactant, by reduce oil water interfacial tension to ultra low degree (be less than 10-2MN/m residual oil flowing) is made to be carried to reach
The purpose of high oil recovery factor.Surfactant oil displacement uses Recompounded multielement system mostly at present, while comprising non-ionic
Surfactant and ionic surfactant, are additionally added the auxiliary agents such as alkali and alcohol in part formulation.Such as patent CN101024764A
A kind of surfactant of oil-field thick-oil well is provided, which is by water, piece alkali, ethanol, oleic acid, alkyl phenol polyoxy second
Alkene ether, sodium dodecyl benzenylsulfonate composition.For another example patent CN1394935 has invented a kind of chemical oil displacement agent, it mainly includes pungent
Base benzene sulfonic acid receives the clean property agent of anionic surface, surfactant adjuvant, surfactant synergist, surface active agent solubilization agent.
This oil displacement agent can significantly reduce the structural viscosity of viscous crude, while can reduce oil water interfacial tension, so as to improve oil recovering
Rate.However, above-mentioned surface active agent for tertiary oil recovery still suffers from more problem, the salt resistant character of anion surfactant compared with
Difference, nonionic surfactant temperature is sensitive, easily separates out, should not largely use under high temperature.For this reason, people started it is cloudy-non-
The research of ionic surface active agent, will two kinds of non-ionic groups and anionic group of different nature designs on same surface
In active agent molecule, the advantages of making it have anion and nonionic surfactant concurrently, have complementary advantages, and there is excellent heatproof to resist
Salt performance, shows good application prospect.Gemini surface active agent has the special construction for being different from conventional surfactant,
It is assigned with a series of uniquenesses such as ultralow interfacial tension, low critical micelle concentration, low Krafft points and excellent wetabilitys
Property, also result in the great interest of people.However, the Gemini surface active agent of domestic-developed is mainly cation double seasons at present
, there is the shortcomings of absorption loss is big, of high cost in ammonium salt type, lose the economic base of application.Special surfactant is due to valency
Lattice are extremely expensive, most of also to stop phase of basic research indoors, it is difficult to promote and apply at the scene.Amphion surface-active
Existing anionic hydrophilic base has cationic hydrophilic base and shows both sexes again in agent molecule, adapts to wider pH range, right
Metal ion has stronger chelation, available for high salinity, the oil reservoir displacement of reservoir oil of higher temperature, and can substantially reduce nonionic
Chromatographic fractionation effect when type surfactant is compounded with anionic surfactant.Therefore, zwitterionic surfactant
Research and development obtained people more and more pay attention to and concern, especially beet alkali ampholytic surface active agent has become three
One of hot spot of secondary oil recovery area research.
It is increasingly deep with oilfield exploitation degree, apply common oil reservoir it is neutral can preferable surfactant in high temperature
Ultralow interfacial tension cannot be formed with crude oil in middle LOW PERMEABILITY RESERVOIR, cause oil displacement efficiency to be deteriorated, seriously constrain oil recovery rate
Raising.In order to reduce oil/water interfacial tension to a greater extent, alkali (such as sodium hydroxide, sodium carbonate of high concentration are often added
Deng), for example, patent CN1439689A disclose a kind of alkali, mixed surfactant and polymer ternary composite oil-displacing system and
It is applied, wherein the alkali selected is Na2CO3.However, alkali brings huge injury to stratum and oil well etc. in use, seriously
Etching apparatus and pipeline, spend substantial contribution in maintenance, maintenance, considerably increase the financial cost of tertiary oil recovery.Patent
CN201310166961.5 proposes a kind of displacement composition for the vermiculate glues that anion surfactant is formed, Ke Yi
Recovery ratio is improved to a certain degree.Therefore, with single surfactant it is difficult to meet in view of the deficiencies of the prior art hypotonic in high temperature
Oil water interfacial tension is down to the displacement of reservoir oil requirements such as ultralow, heat endurance is good, compatibility is good under reservoir condition, offer one kind is provided and is existed
Steady chemical structure under the conditions of LOW PERMEABILITY RESERVOIR in alkali-free, high temperature, can form 10 with crude oil- 3~10- 4MN/m ultralow interfacial tensions,
The new oil displacement system of oil recovery factor is effectively improved, the scope for improving recovery ratio is extended to the harsh oil field such as hypotonic in high temperature
Application in.
The content of the invention
The first technical problem to be solved by the present invention is that there are hypotonic condition in high temperature for surfactant in the prior art
Lower oil displacement efficiency is low, simultaneously because the problem of containing alkali, huge injury is brought to stratum and oil well, there is provided a kind of new displacement of reservoir oil is used glutinous
The composition of elastic surface activating agent, the surfactant have the characteristics that oil displacement efficiency is high, are particularly suitable for Jiangsu oilfield
Husky seven oil fields.
The second technical problem to be solved by the present invention is to provide a kind of with solving one of technical problem corresponding glutinous bullet
The preparation method of composition of property surfactant.
The third technical problem to be solved by the present invention is the combination of one of technical problem Surfactant Used in Viscoelastic Fracturing Fluids
Application of the thing in the displacement of reservoir oil of oil field.
To solve one of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：Viscoelastic surface is used in a kind of displacement of reservoir oil
The composition of activating agent, including amphoteric surfactant and acylate；Wherein, the amphoteric surfactant and organic acid
The molar ratio of salt is 1：0.01~1：100；The amphoteric surfactant is selected from least one of structure shown in formula (I)：
In formula (I), R1Selected from C8~C29Alkyl, C8~C29At least one of alkenyl, the R2And R3It is independent
Selected from C1~C5Alkylidene, C1~C5At least one of hydroxyl substituted alkylene, the R4And R5It is independently chosen from C1
~C4Alkyl, at least one of hydroxyl substituted alkyl group；
The acylate at least one of structure shown in (II) in formula：
In formula (II), X is selected from carboxylate radical, at least one of sulfonate radical, Y in hydrogen, alkyl, hydroxyl, halogen extremely
Few one kind.
In above-mentioned technical proposal, the R4And R5Independently it preferably is selected from C1~C4At least one of alkyl；More preferably
For R4And R5Methyl is selected from, at this time, the glycine betaine Surfactant is selected from least one of structure as shown in (I ') in formula：
At this time, with acylate combined interface tension force performance more preferably.
Preferred R in above-mentioned technical proposal1For C12~C25At least one of alkyl or alkenyl, R2For C2~C3Alkylene
At least one of base or hydroxyl substituted alkylene, R3For C1~C3Alkylidene.
The most preferred technique scheme from the angle for improving recovery ratio, above-mentioned technical proposal：R1For C16~C22Alkyl
Or at least one of alkenyl, R2For C3Alkylidene or at least one of hydroxyl substituted alkylene, R3For C1~C2Alkylene
Base；Acylate be selected from benzene carboxylic acid salt, benzene sulfonate, hydroxyl substitution benzene carboxylic acid salt, halo benzene carboxylic acid salt, halo benzene sulfonate,
At least one of hydroxyl substituted benzenesulfonic acid salt, alkylbenzene carboxylates, alkylbenzenesulfonate.
Interfacial tension is reduced from collaboration, improves the consideration of recovery ratio angle, in above-mentioned technical proposal, the amophoteric surface active
Agent is two or more in structure shown in formula (I) or formula (I '), such as R1The different two or more amphoteric surfaces of carbon number live
Property agent, at this time, R1The different two or more amphoteric surfactantes of carbon number have well with anion surfactant
Synergistic function, preferably such as R1For C15~C29At least one of Long carbon chain amphoteric surfactant and R1For C8~C14
At least one of short carbon chain amphoteric surfactant combination.
In above-mentioned technical proposal, the molar ratio of the amphoteric surfactant and acylate is preferably (1:0.1)~
(1:10)。
In above-mentioned technical proposal, the displacement of reservoir oil further includes water with the composition of Surfactant Used in Viscoelastic Fracturing Fluids, especially suitable for surface
Surfactant waterflood.
To solve the two of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：Described in one of above-mentioned technical problem
The preparation method of the composition of Surfactant Used in Viscoelastic Fracturing Fluids, comprises the following steps：
A) by aliphatic acid acid or its ester and required amidation reagent when 100~160 DEG C of reactions 3~20 are small；Then plus
Enter carboxylating reagent ZR3COOM in 50~100 DEG C the reaction was continued 2~20 it is small when, obtain the Long carbon chain glycine betaine surface described in formula (I)
Activating agent；Wherein, Long carbon chain fatty acid methyl ester：Amidation reagent：The molar ratio of carboxylating reagent is 1：(1~3)：(1~4)；Z is selected
From any one in hydrogen, hydroxyl, halogen, amino, any one of M in alkali metal, alkaline-earth metal, ammonium ion；
B) it is dissolved in water by acylate and according to the obtained amphoteric surfactantes of step a), then according to rubbing
You are than being (1：0.1)~(1：10) it is uniformly mixed, obtains the surface activator composition.
In above-mentioned technical proposal, step a) preferred amides reagent is NH2-R2-N(CH3)2；Amphoteric surface lives in step b)
Property agent and acylate molar ratio preferred scope be (1：0.1)~(1：10).
It is as follows to solve three the technical solution adopted by the present invention of present invention problem：One of above-mentioned technical problem sticks
Application of the composition of elastic surface activating agent in the displacement of reservoir oil of oil field.
Application of the composition of Surfactant Used in Viscoelastic Fracturing Fluids any one of above-mentioned technical proposal in the displacement of reservoir oil of oil field, institute
It is preferably 60~100 DEG C to state reservoir temperature.The permeability amount in oil reservoir is not particularly limited in the oil displacement system, can reach
To preferable oil displacement efficiency, but this area faces prominent technical difficulty during middle-low permeability in oil reservoir, goes out from this angle
Hair, present invention is particularly suitable for high temperature middle and low permeable reservoir, such as reservoir temperature is 85 DEG C in oil reservoir, and permeability reaches for 30 millis
West.
Technical solution using the present invention, uses surface activator composition of the present invention, has boundary during tertiary oil recovery
Face activity is high：Under the conditions of compound surfactant composition dosage is 0.01~0.6w.t.%, in salinity in 30000mg/
In seven live water of L, calcium ions and magnesium ions content 400mg/L sand, remain to form 10 with underground crude oil-3~10-4MN/m ultralow boundary
Face tension force；Washing oil ability is strong, improves recovery ratio 13.1%；The advantages that surface activator composition system is simple, achieves preferably
Technique effect.
Below by embodiment, the present invention is further elaborated.
Embodiment
【Embodiment 1】
1. prepared by surfactant
(1) palmitic amide carboxybetaine amphoteric surfactant (R1=C15, R2=C2、R3=C3) preparation
A) 0.5 mole of Long carbon chain methyl palmitate and the desired amount of amidation reagent N, N- dimethyl-ethylenediamine are added
In reaction kettle, when 130 DEG C of reactions 6 are small, vacuum pump is opened, extracts methanol and excessive N that reaction produces, N- dimethyl second two
Amine, obtains hexadecylic acid acyl group tertiary amine product, the desired amount of β-chloropropionic acid sodium is added when 70 DEG C of reactions 12 are small, with anhydrous second
Long carbon chain beet alkali ampholytic surface active agent is obtained after alcohol recrystallization purification；Wherein, methyl palmitate:N, N- dimethyl second two
Amine:The molar ratio of β-chloropropionic acid sodium is 1:2:1.6.
B) hydroxyl is substituted into benzene carboxylic acid salt and the palmitic amide carboxybetaine amphoteric surfactant of the invention prepared
It is dissolved in water, stirs 30 minutes, aqueous solution is configured to, then by above-mentioned surfactant according to amphoteric surfactant
It is 1 with acylate molar ratio:1 is uniformly mixed, and obtains the composition of Surfactant Used in Viscoelastic Fracturing Fluids.
2. surfactant properties are evaluated
A) viscosity measurement
Using III type viscosimeters of U.S. Brookfield DV-, at 85 DEG C, rotating speed 7.34S-1Under the conditions of, measure is above-mentioned
The oil displacement agent of 0.3% concentration and the viscosity of the husky seven Oil Field water (being shown in Table 3) in Jiangsu the results are shown in Table 2.
B) interfacial tension is evaluated
TX-500C rotating interfacial tensimeters, at 85 DEG C, rotating speed 6000 are produced using Texas ,Usa university
Under the conditions of rev/min, the interfacial tension between the dewatered oil in husky seven oil fields of oil displacement agent and Jiangsu for measuring above-mentioned 0.1% concentration
It the results are shown in Table 2.
C) oil displacement experiment is evaluated
According to the composite oil-displacing system physical simulation flooding test in SY/T6424-2000 composite oil-displacing system performance test methods
Measure of merit, at 87 DEG C, length 30cm, a diameter of 2.5cm, permeability is to carry out imitation oil displacement experiment on the rock core of 30 millidarcies
Experiment.Water drive is first carried out to aqueous 98%, after water drive, the drive of above-mentioned 0.3% concentration of metaideophone 0.3pv (rock pore volume)
After finish, then water drive to aqueous 100%, improves oil recovery factor and the results are shown in Table 2.
【Embodiment 2】
1. prepared by surfactant
(1) erucyl amide carboxybetaine amphoteric surfactant (R1=C21, R2=C3、R3=C2) preparation
A) 0.5 mole of methyl erucate and the desired amount of amidation reagent N, N- dimethylated propyl diethylenetriamine are added into reaction kettle
In, when 145 DEG C of reactions 7 are small, vacuum pump is opened, extracts methanol and excessive N that reaction produces, N- dimethylated propyl diethylenetriamines, obtain
To erucic acid acyl group tertiary amine product, the desired amount of sodium chloroacetate is added, when 75 DEG C of reactions 10 are small, is carried through absolute ethyl alcohol recrystallization
Long carbon chain beet alkali surface activator is obtained after pure；Wherein, methyl erucate:N, N- dimethylated propyl diethylenetriamine:Mole of sodium chloroacetate
Than for 1:2:1.5.
B) hydroxyl is substituted into benzene carboxylic acid salt and the erucyl amide carboxybetaine amphoteric surfactant point of the invention prepared
Be not dissolved in the water, stir 30 minutes, be configured to aqueous solution, then by above-mentioned surfactant according to amphoteric surfactant and
Acylate molar ratio is 1:1 is uniformly mixed, and obtains the composition of Surfactant Used in Viscoelastic Fracturing Fluids.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Embodiment 3】
1. prepared by surfactant
(1) triacontanoic acid amido carboxyl beet alkali surface activator (R1=C29, R2=C3、R3=C3) preparation
A) 0.5 mole of Long carbon chain triacontanoic acid methyl esters and the desired amount of amidation reagent N, N- dimethylated propyl diethylenetriamine are added
In reaction kettle, when 150 DEG C of reactions 8 are small, vacuum pump is opened, extracts methanol and excessive N that reaction produces, N- dimethyl propylenes two
Amine, obtains triacontanoic acid acyl group tertiary amine product, adds the desired amount of β-chloropropionic acid sodium, when 85 DEG C of reactions 16 are small, through anhydrous
Long carbon chain beet alkali surface activator is obtained after ethyl alcohol recrystallization purification；Wherein, triacontanoic acid methyl esters:N, N- dimethylated propyl diethylenetriamine:
The molar ratio of β-chloropropionic acid sodium is 1:2:1.6.
B) hydroxyl is substituted into benzene carboxylic acid salt and the triacontanoic acid amido carboxyl beet alkali ampholytic surface active agent of the invention prepared
It is dissolved in water, stirs 30 minutes, aqueous solution is configured to, then by above-mentioned surfactant according to amphoteric surfactant
It is 1 with acylate molar ratio:0.7 is uniformly mixed, and obtains the composition of Surfactant Used in Viscoelastic Fracturing Fluids.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Embodiment 4】
1. prepared by surfactant
(1) n-nonanoic acid amido carboxyl beet alkali surface activator (R1=C8, R2=C3、R3=C2) preparation
A) 0.5 mole of methyl pelargonate and the desired amount of amidation reagent N, N- dimethylated propyl diethylenetriamine are added into reaction kettle
In, when 135 DEG C of reactions 10 are small, vacuum pump is opened, extracts methanol and excessive N that reaction produces, N- dimethylated propyl diethylenetriamines, obtain
To n-nonanoic acid acyl group tertiary amine product, the desired amount of sodium chloroacetate is added, when 75 DEG C of reactions 10 are small, is carried through absolute ethyl alcohol recrystallization
Long carbon chain beet alkali surface activator is obtained after pure；Wherein, methyl pelargonate:N, N- dimethylated propyl diethylenetriamine:Mole of sodium chloroacetate
Than for 1:2:1.5.
B) by hydroxyl substitute benzene carboxylic acid salt and the present invention prepare n-nonanoic acid amido carboxyl beet alkali surface activator difference it is molten
In Xie Yushui, stir 30 minutes, be configured to aqueous solution, then according to beet alkali surface activator and have above-mentioned surfactant
Machine hydrochlorate molar ratio is 1:1 is uniformly mixed, and obtains the glutinous composition for playing surfactant.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Embodiment 5】
1. prepared by surfactant
By the erucyl amide carboxybetaine amphoteric surfactant in embodiment 2, the n-nonanoic acid amido carboxyl in embodiment 4
Beet alkali ampholytic surface active agent and hydroxyl substitution benzene carboxylic acid salt are dissolved in water, and are stirred 30 minutes, are configured to aqueous solution,
Then by above-mentioned surfactant according to the both sexes of erucyl amide carboxybetaine, n-nonanoic acid amido carboxyl beet alkali ampholytic surface active
Agent and acylate molar ratio are 0.5:0.5:1 is uniformly mixed, and obtains the composition of Surfactant Used in Viscoelastic Fracturing Fluids.2. surface-active
Agent performance evaluation
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Comparative example 1】
1. prepared by surfactant
Benzene carboxylic acid salt and docosyl carboxybetaine amphoteric surfactant is substituted to be dissolved in water hydroxyl,
Stirring 30 minutes, is configured to aqueous solution, then by above-mentioned surfactant according to amphoteric surfactant and acylate mole
Than for 1:1 is uniformly mixed, and obtains the composition of Surfactant Used in Viscoelastic Fracturing Fluids.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Comparative example 2】
1. prepared by surfactant
According to the method described in patent CN103242816B, the surfactant of synthesis such as lower structure：C11H23CON
(CH2CH2OH)2, the surfactant that hydroxyl substitutes benzene carboxylic acid salt and synthesis is dissolved in water, is stirred 30 minutes, is prepared
It is then 1 according to the surfactant and acylate molar ratio of synthesis by above-mentioned surfactant into aqueous solution:1 mixing is equal
It is even, obtain the composition of Surfactant Used in Viscoelastic Fracturing Fluids.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
【Comparative example 3】
1. prepared by surfactant
By the erucyl amide carboxybetaine amphoteric surfactant in embodiment 2, the n-nonanoic acid amido carboxyl in embodiment 6
Beet alkali ampholytic surface active agent is dissolved in water, and is stirred 30 minutes, aqueous solution is configured to, then by above-mentioned surface-active
Agent is 1 according to the both sexes of erucyl amide carboxybetaine, n-nonanoic acid amido carboxyl beet alkali ampholytic surface active agent molar ratio:1 mixing
Uniformly, the composition of Surfactant Used in Viscoelastic Fracturing Fluids is obtained.
2. surfactant properties are evaluated
In addition to oil displacement agent composition is different, method of evaluating performance is the same as embodiment 1.For ease of comparing the composition of oil displacement agent
Table 1 is listed in, evaluation result is listed in table 2.
Surface activator composition composition in 1 embodiment of table and comparative example
Oil displacement agent performance evaluation in 2 embodiment of table and comparative example
| Viscosity (mPa.s) | Interfacial tension (mN/m) | Improve recovery ratio % | |
| Embodiment 1 | 15.7 | 0.0079 | 12.6 |
| Embodiment 2 | 16.9 | 0.0053 | 12.7 |
| Embodiment 3 | 15.9 | 0.0083 | 12.3 |
| Embodiment 4 | 14.8 | 0.0089 | 12.0 |
| Embodiment 5 | 18.9 | 0.00086 | 13.1 |
| Comparative example 1 | 8.5 | 0.013 | 7.4 |
| Comparative example 2 | 2.3 | 0.016 | 4.6 |
| Comparative example 3 | 7.9 | 0.0017 | 7.8 |
3 Jiangsu oilfield of table sand, seven live water
| Unit | Na++K+ | Mg2+ | Ca2+ | Cl- | SO4 2- | HCO3 - | TDS |
| mg/L | 8730.8 | 154 | 220 | 10224 | 1507.7 | 5152.5 | 25830 |
Claims (10)
1. a kind of displacement of reservoir oil glutinous composition for playing surfactant, including amphoteric surfactant and acylate；Wherein, it is described
Amphoteric surfactant and acylate molar ratio be 1：0.01~1：100；The amphoteric surfactant is selected from formula (I)
At least one of shown structure：
In formula (I), R1Selected from C8~C29Alkyl, C8~C29At least one of alkenyl, the R2And R3It is independently chosen from
C1~C5Alkylidene, C1~C5At least one of hydroxyl substituted alkylene, the R4And R5It is independently chosen from C1~C4's
At least one of alkyl, hydroxyl substituted alkyl group；
The acylate at least one of structure shown in (II) in formula：
In formula (II), X is selected from carboxylate radical, at least one of sulfonate radical, Y in hydrogen, alkyl, hydroxyl, halogen at least one
Kind.
2. composition according to claim 1, it is characterised in that R in the amphoteric surfactant1For C12~C25's
At least one of alkyl or alkenyl, R2For C2~C3Alkylidene or at least one of hydroxyl substituted alkylene, R3For C1~
C3Alkylidene.
3. composition according to claim 2, it is characterised in that R in the amphoteric surfactant1For C16~C22's
At least one of alkyl or alkenyl, R2For C3Alkylidene or at least one of hydroxyl substituted alkylene, R3For C1~C2's
Alkylidene.
4. composition according to any one of claim 1 to 3, it is characterized in that the composition includes water.
5. composition according to claim 1, it is characterised in that the acylate is selected from benzene carboxylic acid salt, benzene sulfonic acid
Salt, hydroxyl substitution benzene carboxylic acid salt, halo benzene carboxylic acid salt, halo benzene sulfonate, hydroxyl substituted benzenesulfonic acid salt, alkylbenzene carboxylates,
At least one of alkylbenzenesulfonate.
6. composition according to claim 1, it is characterised in that the amphoteric surfactant is the R shown in formula (I)1For
C15~C29R shown in formula (I) of at least one of Long carbon chain amphoteric surfactant1For C8~C14Short carbon chain both sexes table
The combination of at least one of face activating agent.
7. the preparation method of the glutinous composition for playing surfactant of any displacement of reservoir oil of claim 1~6, including following step
Suddenly：
A) by aliphatic acid acid or its ester and required amidation reagent when 100~160 DEG C of reactions 3~20 are small；Then add carboxylic
Change reagent ZR3COOM in 50~100 DEG C the reaction was continued 2~20 it is small when, obtain the Long carbon chain glycine betaine surface-active described in formula (I)
Agent；Wherein, Long carbon chain fatty acid methyl ester：Amidation reagent：The molar ratio of carboxylating reagent is 1：(1~3)：(1~4)；Z is selected from
Any one in hydrogen, hydroxyl, halogen, amino, any one of M in alkali metal, alkaline-earth metal, ammonium ion；
B) it is dissolved in water by acylate and according to the obtained amphoteric surfactantes of step a), then according to molar ratio
For (1：0.1)~(1：10) it is uniformly mixed, obtains the displacement of reservoir oil with the glutinous composition for playing surfactant.
8. application of the Surfactant Used in Viscoelastic Fracturing Fluids any one of claim 1 to 6 in the displacement of reservoir oil of oil field.
9. application of the Surfactant Used in Viscoelastic Fracturing Fluids according to claim 8 in the displacement of reservoir oil of oil field, it is characterised in that described to answer
It is LOW PERMEABILITY RESERVOIR with applicable oil reservoir.
10. application of the Surfactant Used in Viscoelastic Fracturing Fluids according to claim 9 in the displacement of reservoir oil of oil field, it is characterised in that described low
The temperature that permeability is hidden is 60~100 DEG C.
Priority Applications (1)
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| CN115404066A (en) * | 2022-11-03 | 2022-11-29 | 海域泰和(山东)能源科技有限公司 | Oil displacement agent based on crude oil-rock destruction effect and preparation method and application thereof |
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