CN107828398A - Efficient surfactant oil displacement composition and preparation method thereof - Google Patents
Efficient surfactant oil displacement composition and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of efficiently surfactant oil displacement composition and preparation method thereof, it is poor mainly to solve existing surfactant oil displacement efficiency during tertiary oil recovery, simultaneously because oil displacement system contains inorganic base, the problem of injury, etching apparatus and pipeline and difficult demulsification are brought to stratum and oil well.The present invention is by using a kind of efficiently surfactant oil displacement composition, including cationic surfactant and anion nonionic surfactant, its cationic surfactant is selected from quaternary ammonium salt, any one in quaternary amine alkali, anion nonionic surfactant is the surfactant containing ethyoxyl non-ionic group and carboxyl or sulfonic group anionic group, the technical scheme that the mol ratio of described cationic surfactant and anion nonionic surfactant is 1: 0.01 ~ 1: 100 and preparation method thereof preferably solves the problem, during tertiary oil production in oil field.
Description
Technical field
The present invention relates to a kind of efficiently surfactant oil displacement composition and preparation method thereof.
Background technology
With the increase of world energy sources demand, the rational exploitation and utilization of oil has caused the very big attention of people, to oil
Yield and production efficiency requirement also more and more higher.The high-efficiency mining of petroleum resources is realized, for improving crude output not
Only there is realistic meaning, with more important strategic importance.Conventional oil production method（Primary and secondary method）Normally only extraction is former
The 1/3 of oily oil in place, it there is also about 2/3 crude oil and fail to produce, therefore in the case where energy day is becoming tight, improve tar productivity
The key subjects of oil exploitation research are turned into.Tertiary oil recovery technology is then a kind of effective method for improving tar productivity, can be divided
For four major classes：First, heating power drives, including steam drive, combustion in situ etc.；Second, mixed phase drive, including CO2 mixed phases, hydrocarbon mixed phase and other
Inert gas mixed phase drives；Third, chemical flooding；Fourth, microbe oil production, including biopolymer, MICROBIAL SURFACTANT are driven.Change
Learn that to drive be technology that is extremely important in intensified oil reduction and implementing on a large scale, including polymer flooding, surfactant flooding, caustic waterflooding etc.
And the multiple combinations technology of polymer, alkali, surfactant.The effect of chemical flooding is physical action and the knot of chemical action
Fruit, physical action refers to the effect that involves of displacing fluid, and chemical action refers to the microcosmic oil drive effect of displacing fluid.Chemical action
Core is to reduce the interfacial tension of displacing fluid and crude oil.Surfactant is due to having oleophylic concurrently（It is hydrophobic）With it is hydrophilic（Oleophobic）Property
Matter, when surfactant is dissolved in water, molecule is mainly distributed on oil-water interfaces, can significantly reduce oil water interfacial tension.Oil
The reduction of water interfacial tension means that surfactant system can overcome the cohesive force between crude oil, and larger oil droplet is dispersed into small oil
Drop, so as to improve percent of pass when crude oil flows through pore throat.The oil displacement efficiency of surfactant is also manifested by the rock table for making oleophylic
Face wettability reversal, emulsification of crude oil, the effect such as surface charge density and oil droplet coalescence is improved, this is surfactant in chemical flooding
Play the reason for very important in technology.
Surface active agent for tertiary oil recovery uses Recompounded multielement system mostly at present, while includes non-ionic surfactant
Agent and ionic surfactant, the auxiliary agents such as alkali and alcohol are additionally added in part formulation.As patent CN101024764A provides one
The surfactant of kind oil-field thick-oil well, the activating agent is by water, piece alkali, ethanol, oleic acid, APES, ten
Dialkyl benzene sulfonic acids sodium forms.For another example patent CN1458219A discloses a kind of surfactant polymer of tertiary oil recovery application
Pure binary ultralow interfacial tension combination flooding formula, wherein the surfactant used be petroleum sulfonate or using petroleum sulfonate as
Host adds the complexed surfactant of diluent and other surfactant compounds, and the percentage by weight of its component is mahogany acid
Salt 50~100%, alkylsulfonate 0~50%, carboxylate 0~50%, alkylaryl sulfonates 0~35%, low-carbon alcohols 0~20%.Again
As patent CN1394935 has invented a kind of chemical oil displacement agent, it mainly includes sodium octylbenzene sulfonate anion surfactant, table
Face activity agent aid, surfactant synergist, surface active agent solubilization agent.This oil displacement agent can significantly reduce the knot of viscous crude
Structure viscosity, while oil water interfacial tension can be reduced, so as to improve oil recovery factor；However, above-mentioned surface-active used for tertiary oil recovery
Agent still suffers from more problem, and mainly surfactant activity is poor, oil displacement efficiency is low, simultaneously because surfactant system is excessively
Complexity, thus Produced Liquid demulsification is difficult, sewage disposal difficulty is big；Contain inorganic base additionally, due to oil displacement system, to stratum and oil well
Injury is brought, the problems such as causing etching apparatus and pipeline, and because inorganic base can seriously reduce the viscosity of polymer, to reach
Required viscosity has to greatly improve the concentration of polymer, improves oil recovery integrated cost；The high temperature resistance of surfactant,
High salt tolerance, anti-high salinity it is limited in one's ability.
It is well known that anion surfactant, such as petroleum sulfonate, petroleum carboxylate, alkylbenzenesulfonate are at present
It is widely used in during tertiary oil recovery, and cationic surfactant precipitates because it is easily adsorbed or produced by stratum, therefore drop
The ability of low oil water interfacial tension, is generally not used for tertiary oil recovery.Because cationic and anionic surfactant mixes close to equal proportion
Its aqueous solution easily forms precipitation during conjunction, matches somebody with somebody so as to cause cationic and anionic surfactant mixed system not only to turn into the application
5 taboos, and hysteresis is also compared in correlation theory research.Research discovery in recent years, cationic and anionic surfactant mixed system
The aqueous solution has many anomalous properties, and such as due to cationic and anionic surfactant, there is strong electrostatic interaction in aqueous
Interaction between hydrophobic carbon chain, two kinds is promoted with the interionic association of different charged surfactants, in the solution
Micella is readily formed, produces the surface-active higher than single surfactant.In addition, cationic and anionic surfactant mixes
System can obviously reduce absorption loss of the cationic surfactant on rock core, so as to significantly reduce cation surface activating
The inherent shortcoming of agent；Gong Yujun etc.（See 2 months 2000 the 1st phase Northwest University's journals (natural science edition) of volume 30,28~31）
Cetyl trimethylammonium bromide is thought in research（CTAB）With lauryl sodium sulfate（SDS）Mixed system has solubilization.
During oil exploitation, using solubilization can " displacement of reservoir oil ", under the oil wash that will be adhered on the sandstone of rock stratum, so as to improve stone
Oil recovery.Huang Hongdu etc.（See petroleum gas journal in August, 2007 the 4th phase of volume 29,101~104）It has studied oil sulphur
The anion surfactants such as hydrochlorate, petroleum carboxylate, alkylbenzenesulfonate and cetyl trimethylammonium bromide, alkali compound ligand
The interfacial tension of system is simultaneously drawn to draw a conclusion：The addition of cationic surfactant makes petroleum carboxylate, alkylbenzenesulfonate, stone
The interfacial activity of oily sulfonate is improved；The studies above result shows anions and canons Surfactant Mixing Systems for drop
Low oil water interfacial tension, raising oil displacement efficiency have certain effect.But the former result of study shows that its interface performance still has
To be modified, the latter still employs alkali in system, so as to which alkali can not be avoided to bring injury to stratum and oil well, etching apparatus with
The problems such as pipeline and difficult demulsification.Other above-mentioned system is easier generation precipitation, is unfavorable for practical application；It is therefore, of the invention
On the one hand absorb and used for reference forefathers on anions and canons Surfactants mixed system result of study, on the other hand using it is cloudy from
Son-nonionic surfactant replaces traditional anion surfactant, when overcoming cationic anionic surfactant combination
Easily the shortcomings of precipitation, the efficient surfactant composition for tertiary oil recovery has been invented.
The content of the invention
One of technical problems to be solved by the invention are existing surfactant oil displacement efficiencies during tertiary oil recovery
Difference, simultaneously because oil displacement system contains inorganic base, bring injury, etching apparatus and pipeline and demulsification difficult to stratum and oil well
Problem, there is provided a kind of new efficient surfactant oil displacement composition, said composition have that concentration is low, oil displacement efficiency
Height, injury will not be brought to stratum and oil well, will not etching apparatus and the advantages of pipeline；The technical problems to be solved by the invention
Two be to provide it is a kind of with solving the preparation method of the corresponding surface activator composition of technical problem one.
To solve one of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：A kind of efficiently displacement of reservoir oil is lived with surface
Property agent composition, including cationic surfactant and Anionic-nonionic surfactant, described cation surface activating
Agent and the mol ratio of Anionic-nonionic surfactant are 1: 0.01~1: 100, and its cationic surfactant is selected from season
At least one of ammonium salt or quaternary amine alkali, Anionic-nonionic surfactant molecule formula are：
Or
Wherein M is any one in alkali metal, alkaline-earth metal or ammonium ion, in R H, alkyl, aryl, COOM, SO3M
Any one, n be 0~20 in any one integer, m be 0~20 in any one integer, X be 0.1~100 in appoint
One integer of meaning or decimal；In above-mentioned technical proposal, the cationic surfactant is selected from tetra-alkyl ammonium chloride or tetraalkyl
At least one of ammonium hydroxide；Anionic-nonionic surfactant cationic M is in Na, K, Mg, Ca or NH4+
Any one；N is any one integer in 0~10；M is any one integer in 0~10；Ethyoxyl degree of polymerization X is 1
Any one integer or decimal in~20.
To solve the two of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：A kind of efficiently displacement of reservoir oil is lived with surface
The preparation method of property agent composition, comprises the following steps：
A) unsaturated fatty alcohol, base catalyst and required oxirane are added into reactor, reacts 1 in 100~200oC
~20 hours；
B) product for obtaining substituted benzenesulfonic acid or substituted benzoic acid with step a is under acidic catalyst, in 50~200oC after
Continuous reaction 1~20 hour, then plus alkali is neutralized to pH>10, and carry out water-oil separating；
C) oil-phase product for obtaining step b adds highly basic and hydrolyzed 5~20 hours in 100~300oC, obtains APEO
Sulfonate/carboxylate anion-nonionic surfactant；
D) cationic surfactant and the Anionic-nonionic surfactant obtained according to step c are dissolved separately in
It is then well mixed according to mol ratio 1: 0.1~1: 10 in water.
The present invention surface activator composition on the one hand due to anions and canons surfactant opposite charges polar group it
Between strong electrostatic attraction effect so that surfactant molecule increases in adsorbed on interfaces amount, and critical micelle concentration significantly drops
It is low, so as to the incomparable high surface of single surfactant；Simultaneously because surface activator composition superelevation
Interfacial activity, its aqueous solution can form ultralow interfacial tension with crude oil, so as to effectively overcome the cohesive force between crude oil, be advantageous to original
The outflow of oil, and then greatly improve oil displacement efficiency.Another aspect surface activator composition can change the wetting on oil reservoir surface
Property, if the cationic surfactant in composition is by with adsorbing electronegative Interaction of substituents on a solid surface,
It is desorbed, glossy wet structure is changed into neutral wetting or water wetting surface, reduces adhesion of the crude oil in the surface of solids
Work(, so as to be advantageous to the stripping of crude oil.Anions and canons surfactant mixed solution has solubilization to crude oil simultaneously, can
Further to wash down the crude oil being adhered on the sandstone of rock stratum, oil recovery factor is improved；Using the present invention during tertiary oil recovery
Surface activator composition, have interfacial activity high：Surface activator composition dosage remains under the conditions of being 0.01~0.05%
10-3~10-4 MNs/m of ultralow interfacial tension is formed with underground crude oil；Washing oil ability is strong：Surface activator composition is to original
The washing oil rate of oil is more than 40%；Surface activator composition system is simple.Because system is free of inorganic base, thus avoid scene
Using when inorganic base injured to caused by stratum, to caused by equipment corrosion and thus it is caused demulsification it is difficult the problem of, take
Obtained preferable technique effect.
Below by embodiment, the present invention is further elaborated.
Embodiment
【Embodiment 1】
By CH3 (CH2) 2CH=CH (CH2) 6OH, NaOH according to mol ratio 1：1.5 add reactor, and stirring adds institute after 30 minutes
The oxirane needed, reacted 1 hour in 200oC；Then according to unsaturated alcohol and alkyl benzene sulphonate mol ratio 1：4 add pentadecane
Base substituted benzenesulfonic acid, continues reaction 20 hours in 50oC, then adds the 5%KOH aqueous solution and is neutralized to pH>10, stratification, oil
It is added to 10%NaOH to hydrolyze 20 hours in 100oC, obtains polyethenoxy ether sulphonate Anionic-nonionic surfactant；Will
Anionic-nonionic surfactant prepared by hexadecyltrimethylammonium chloride and the present invention is dissolved in water, and is stirred
30 minutes, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：Anionic-nonionic surface-active
Agent mol ratio 1: 0.4 is well mixed, obtains surface activator composition 1, and it is formed, structure is shown in Table 1.
【Embodiment 2】
By CH3CH=CH (CH2) 9OH, NaOH according to mol ratio 1：4 add reactor, and stirring adds required epoxy after 30 minutes
Ethane, reacted 20 hours in 100oC；Then according to unsaturated alcohol and alkyl benzene sulphonate mol ratio 1：6 add octyl benzene sulfonic acid, in
200oC continues reaction 1 hour, then adds the 10%NaOH aqueous solution and carries out being neutralized to pH>10, stratification, oil phase adds 10%
Ammoniacal liquor hydrolyzes 5 hours in 300oC, obtains polyethenoxy ether sulphonate Anionic-nonionic surfactant；By tetraethyl chlorination
Anionic-nonionic surfactant prepared by ammonium and the present invention is dissolved in water, and is stirred 30 minutes, is configured to 0.3% water
Solution, then by above-mentioned surfactant according to cation：The mixing of Anionic-nonionic surfactant molar ratio 1: 0.1 is equal
It is even, surface activator composition 2 is obtained, it is formed, structure is shown in Table 1.
【Embodiment 3】
By CH3 (CH2) 3CH=CH (CH2) 4OH, KOH according to mol ratio 1：1.5 add reactor, and stirring adds institute after 30 minutes
The oxirane needed, reacted 6 hours in 160oC；Then according to unsaturated alcohol and alkyl benzene sulphonate mol ratio 1：3 addition amyl groups take
For benzene sulfonic acid, continue reaction 12 hours in 100oC, then add the 5%NaOH aqueous solution and carry out being neutralized to pH>10, stratification,
Oil phase adds 30%NaOH and hydrolyzed 15 hours in 200oC, obtains polyethenoxy ether sulphonate Anionic-nonionic surfactant；
Anionic-nonionic surfactant prepared by tetrabutylammonium chloride and the present invention is dissolved in water, stirred 30 minutes,
0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：Anionic-nonionic surfactant molar ratio
1: 1.3 is well mixed, obtains surface activator composition 3, and it is formed, structure is shown in Table 1.
【Embodiment 4】
By CH3 (CH2) 5CH=CHCH2OH, KOH according to mol ratio 1：2 add reactor, stir 30 minutes, then needed for addition
Oxirane, in 140oC react 10 hours；Then according to unsaturated alcohol and alkyl benzene sulphonate mol ratio 1：3 add to carboxyl
Benzene sulfonic acid, continues reaction 15 hours in 80oC, then adds the 30%NaOH aqueous solution and carries out being neutralized to pH>10, stratification, oil
It is added to 10%KOH to hydrolyze 8 hours in 250oC, obtains polyethenoxy ether sulphonate Anionic-nonionic surfactant；By the last of the ten Heavenly stems
Anionic-nonionic surfactant prepared by base triethylammonium hydroxide and the present invention is dissolved in water, and stirs 30 points
Clock, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：Anionic-nonionic surfactant rubs
You are more well mixed than 1: 2, obtains surface activator composition 4, and it is formed, structure is shown in Table 1.
【Embodiment 5】
By CH3 (CH2) 9CH=CHOH, KOH according to mol ratio 1：1 adds reactor, and stirring adds required epoxy after 30 minutes
Ethane, reacted 8 hours in 150oC；Then according to unsaturated alcohol and alkyl benzene sulphonate mol ratio 1：2 add benzene sulfonic acid, in 150oC
Continue reaction 8 hours, then add the 10%KOH aqueous solution and carry out being neutralized to pH>10, stratification, oil phase adds 1%Mg (HCO3)
2 hydrolyze 20 hours in 300oC, obtain polyethenoxy ether sulphonate Anionic-nonionic surfactant；By hexadecyldimethylamine
Anionic-nonionic surfactant prepared by base benzyl ammonium chloride and the present invention is dissolved in water, and is stirred 30 minutes, is matched somebody with somebody
0.3% aqueous solution is made, then by above-mentioned surfactant according to cation：Anionic-nonionic surfactant molar ratio 1:
1.2 is well mixed, obtains surface activator composition 5, and it is formed, structure is shown in Table 1.
【Embodiment 6】
By CH3 (CH2) 7CH=CH (CH2) 2OH, NaOH according to mol ratio 1：2.5 add reactor, and stirring adds institute after 30 minutes
The oxirane needed, reacted 6 hours in 160oC；Then according to unsaturated alcohol and substituted benzenesulfonic acid mol ratio 1：4 add the sulphur of benzene two
Acid, continues reaction 10 hours in 140oC, then adds the 10%NaOH aqueous solution and carries out being neutralized to pH>10, stratification, oil phase adds
Enter 1%Ca (HCO3) 2 to hydrolyze 20 hours in 300oC, obtain polyethenoxy ether sulphonate Anionic-nonionic surfactant；Will
Anionic-nonionic surfactant prepared by DTAC and the present invention is dissolved in water, and is stirred
30 minutes, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：Anionic-nonionic surface-active
Agent mol ratio 1: 5 is well mixed, obtains surface activator composition 6, and it is formed, structure is shown in Table 1.
【Embodiment 7】
By CH3CH=CH (CH2) 9OH, KOH according to mol ratio 1：2 add reactor, and stirring adds required epoxy after 30 minutes
Ethane, reacted 16 hours in 120oC；Then according to unsaturated alcohol and substituted benzoic acid and catalyst molar ratio 1：3.5：0.1 adds
Enter 4- Phenylbenzoic acids and Catalyzed by P-Toluenesulfonic Acid agent, continue reaction 4 hours in 180oC, then add the 10%NaOH aqueous solution
Carry out being neutralized to pH>10, stratification, oil phase adds 1%Mg (HCO3) 2 and hydrolyzed 20 hours in 300oC, obtains APEO
Sulfonate anionic-nonionic surfactant；Anionic-nonionic table prepared by phenyl trimethicone ammonium chloride and the present invention
Face activating agent is dissolved in water, and is stirred 30 minutes, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to sun
Ion：Anionic-nonionic surfactant molar ratio 1: 1.4 is well mixed, obtains surface activator composition 7, its composition,
Structure is shown in Table 1.
【Embodiment 8】
By CH3 (CH2) 9CH=CH (CH2) 2OH, NaOH according to mol ratio 1：3 add reactor, after stirring 30 minutes needed for addition
Oxirane, in 160oC react 4 hours；Then according to unsaturated alcohol and substituted benzoic acid and catalyst molar ratio 1：5：0.2
Add to carboxyl benzene sulfonic acid and chlorosulfonic acid catalyst, continue reaction 10 hours in 160oC, then add the 5%NaOH aqueous solution and carry out
It is neutralized to pH>10, stratification, oil phase adds 20%NaOH and hydrolyzed 15 hours in 200oC, obtains polyethenoxy ether sulphonate the moon
Ion-nonionic surfactant；Anionic-nonionic surfactant prepared by four octyl group ammonium chlorides and the present invention is distinguished
It is dissolved in the water, stirs 30 minutes, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：Anion-
Nonionic surfactant mol ratio 1: 0.2 is well mixed, obtains surface activator composition 8, and it is formed, structure is shown in Table 1.
【Embodiment 9】
By CH3 (CH2) 2CH=CH (CH2) 5OH, KOH according to mol ratio 1：2 add reactor, after stirring 30 minutes needed for addition
Oxirane, in 150oC react 8 hours；Then according to unsaturated alcohol and substituted benzoic acid and catalyst molar ratio 1：4：0.4
M-phthalic acid and chlorosulfonic acid catalyst are added, continues reaction 18 hours in 70oC, is then added in the progress of the 5%NaOH aqueous solution
With to pH>10, stratification, oil phase add 10%NaOH in 220oC hydrolyze 20 hours, obtain polyethenoxy ether sulphonate the moon from
Son-nonionic surfactant；Anionic-nonionic surfactant point prepared by benzyltriethylammoinium chloride and the present invention
It is not dissolved in the water, stirs 30 minutes, 0.3% aqueous solution is configured to, then by above-mentioned surfactant according to cation：It is cloudy from
Son-nonionic surfactant mol ratio 1: 0.4 is well mixed, obtains surface activator composition 9, and it is formed, structure is shown in Table
1。
【Embodiment 10】
By CH3 (CH2) 6CH=CH (CH2) 3OH, KOH according to mol ratio 1：2 add reactor, after stirring 30 minutes needed for addition
Oxirane, in 155oC react 6 hours；Then according to unsaturated alcohol and substituted benzoic acid and catalyst molar ratio 1：4：0.3
Nonyl benzoic acid and p-methyl benzenesulfonic acid are added, continues reaction 12 hours in 130oC, the 10%NaOH aqueous solution is then added and carries out
It is neutralized to pH>10, stratification, oil phase adds 10%NaOH and hydrolyzed 15 hours in 260oC, obtains polyethenoxy ether sulphonate the moon
Ion-nonionic surfactant；Anionic-nonionic surface prepared by dioctadecyl dimethyl ammonium chloride and the present invention
Activating agent is dissolved in water, stir 30 minutes, be configured to 0.3% aqueous solution, then by above-mentioned surfactant according to sun from
Son：Anionic-nonionic surfactant molar ratio 1: 10 is well mixed, obtains surface activator composition 10, and it is formed, knot
Structure is shown in Table 1.
【Embodiment 11】
0.30wt% surface activator compositions prepared by embodiment 5 and 0.15wt% polyacrylamides (molecular weight 26,000,000) water
Solution is well mixed, and obtains a kind of Polymer Used For Oil Displacement-surfactant complex.
The surface activator composition of table 1 forms and structure
【Embodiment 12】Surface activator composition interface performance is tested
With TX-500C rotating interfacial tensimeters measure surface activator composition and Shuanghe Oil Field 5-11 series of strata profits circle
Face tension force.Surface activator composition dosage is 0.3%, and measurement temperature 81oC, stratum water is NaHCO3 types, and salinity is
7947mg/L, chloride ion content 2002 mg/L, Ca2+ content 20 mg/L, the mg/L of Mg2+ contents 12.2；Surfactant package
Thing and Shuan He oil fields 5-11 series of strata oil water interfacial tensions.
As shown in Table 2, the surface activator composition that prepared by embodiment 1~10 has good interface for Henan Oil Field
Performance.Embodiment 11 shows that after surface activator composition prepared by the present invention compounds with polymer, its interface performance is still good
It is good that surface activator composition prepared by embodiment 5 is configured to various concentrations, test and Shuanghe Oil Field 5-11 layers respectively
It is oil water interfacial tension；Various concentrations surface activator composition 5 and Shuanghe Oil Field 5-11 series of strata oil water interfacial tensions.
The above results show that surface activator composition of the present invention has very high oil-water interfaces for Henan Oil Field crude oil
Activity.
Surface activator composition and Central Plains prepared by embodiment 4 is determined again with TX-500C rotating interfacial tensimeters
The factory's oil water interfacial tension of oil extraction in oil field three.Measurement temperature is 80oC, formation water salinity 79439mg/L, Ca2+ content 592
Mg/L, Mg2+ content 2871mg/L, dosage of surfactant 0.3%.Oil water interfacial tension is 0.003mN/m, shows the present invention
Surfactant not only for low mineralization oil reservoir, still there is good interface performance simultaneously for high temperature and high salt oil deposit,
With the scope of application it is wide the advantages of.
【Embodiment 13】Surface activator composition washing oil aptitude tests
Shuanghe Oil Field 5-11 series of strata oil-sands are taken, according to oil：Sand=1：4 (weight ratios) stirred for every 2 hours in 81oC agings 7 days
5 minutes；The oil-sand 5g after above-mentioned aging is then taken out, the surfactant solution with 0.3% presses oil-sand：Solution=1：10 mixing
Uniformly, under reservoir temperature after aging 48 hours, with the crude oil in petroleum ether extraction solution, with 50ml colorimetric cylinder constant volumes, light splitting
Photometer colorimetric analysis at wavelength 430nm.Utilize standard curve gauging surface activator solution Central Plains oil concentration.
【Embodiment 14】Surface activator composition Oil Displacing Capacity is studied
It it is 30 centimetres in length, a diameter of 2.5 centimetres, permeability is to carry out oil displacement test on 1.5 micron 2 of rock core.First use river
Nan Shuan rivers oil field 5-11 series of strata stratum water drive is to aqueous 92 %, metaideophone 0.3pv (rock pore volume) surfactant package
After thing, water drive to aqueous 100%, oil recovery factor is improved.
【Comparative example 1】
According to Northwest University's journal (natural science edition) 2000 year 2 month the 1st phase of volume 30, by ten the methods of 28~31 Gong Yu armies
Six alkyl trimethyl ammonium bromides (CTAB) are configured to mixed system (mol ratio 1 with lauryl sodium sulfate (SDS)：1.5), respectively
Test its in 0.3% dosage with Shuanghe Oil Field 5-11 series of strata crude oil oil water interfacial tension, washing oil rate and Oil Displacing Capacity.
【Comparative example 2】
According to petroleum gas journal in August, 2007 the 4th phase, Huang Hong degree etc. (101~104) method of volume 29 etc. by 0.01% ten
Six alkyl trimethyl ammonium bromides and 0.02% anion surfactant petroleum sulfonate and 1.8%Na2CO3 are configured to mixture
System, test respectively its in 0.3% dosage with Shuanghe Oil Field 5-11 series of strata crude oil oil water interfacial tension, washing oil rate and the displacement of reservoir oil
Performance.
Claims (8)
- A kind of 1. efficiently surfactant oil displacement composition, including cationic surfactant and Anionic-nonionic surface Activating agent, the mol ratio of described cationic surfactant and Anionic-nonionic surfactant is 1: 0.01~1: 100, its cationic surfactant is selected from least one of quaternary ammonium salt or quaternary amine alkali, Anionic-nonionic surface-active Agent molecule formula is：OrWherein M is any one in alkali metal, alkaline-earth metal or ammonium ion, in R H, alkyl, aryl, COOM, SO3M Any one, n be 0~20 in any one integer, m be 0~20 in any one integer, X be 0.1~100 in appoint One integer of meaning or decimal.
- 2. efficient surfactant oil displacement composition according to claim 1, it is characterised in that the cationic surface is lived Property agent is selected from least one of tetra-alkyl ammonium chloride or tetra-alkyl ammonium hydroxide.
- 3. efficient surfactant oil displacement composition according to claim 1, it is characterised in that the Anionic-nonionic Any one of surfactant cationic M in Na, K, Mg, Ca or NH4+.
- 4. efficient surfactant oil displacement composition according to claim 1, it is characterised in that during the n is 0~10 Any one integer.
- 5. efficient surfactant oil displacement composition according to claim 1, it is characterised in that during the m is 0~10 Any one integer.
- 6. efficient surfactant oil displacement composition according to claim 1, it is characterised in that the ethyoxyl degree of polymerization X For any one integer or decimal in 1~20.
- 7. efficient surfactant oil displacement composition according to claim 1, it is characterised in that cationic surfactant Mol ratio with Anionic-nonionic surfactant is 1: 0.1~1: 10.
- 8. the preparation method of efficient surfactant oil displacement composition, comprises the following steps described in claim 1：A) unsaturated fatty alcohol, base catalyst and required oxirane are added into reactor, reacts 1 in 100~200oC ~20 hours；B) product for obtaining substituted benzenesulfonic acid or substituted benzoic acid with step a is under acidic catalyst, in 50~200oC after Continuous reaction 1~20 hour, then plus alkali is neutralized to pH>10, and carry out water-oil separating；C) oil-phase product for obtaining step b adds highly basic and hydrolyzed 5~20 hours in 100~300oC, obtains APEO Sulfonate/carboxylate anion-nonionic surfactant；D) cationic surfactant and the Anionic-nonionic surfactant obtained according to step c are dissolved separately in It is then well mixed according to mol ratio 1: 0.1~1: 10 in water.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154473A (en) * | 2020-01-14 | 2020-05-15 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN112226222A (en) * | 2019-07-15 | 2021-01-15 | 中国石油化工股份有限公司 | Low-tension viscoelastic surfactant composition for chemical flooding tertiary oil recovery of high-temperature and high-salinity oil reservoir and preparation method thereof |
| CN114316938A (en) * | 2020-10-09 | 2022-04-12 | 中石化南京化工研究院有限公司 | Self-tackifying surfactant composition containing polyether chain segment for profile control and flooding |
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2017
- 2017-11-16 CN CN201711133374.0A patent/CN107828398A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226222A (en) * | 2019-07-15 | 2021-01-15 | 中国石油化工股份有限公司 | Low-tension viscoelastic surfactant composition for chemical flooding tertiary oil recovery of high-temperature and high-salinity oil reservoir and preparation method thereof |
| CN112226222B (en) * | 2019-07-15 | 2023-09-29 | 中国石油化工股份有限公司 | Low-tension viscoelastic surfactant composition for high-temperature high-mineralization oil reservoir chemical flooding tertiary oil recovery and preparation method thereof |
| CN111154473A (en) * | 2020-01-14 | 2020-05-15 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN111154473B (en) * | 2020-01-14 | 2022-04-08 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN114316938A (en) * | 2020-10-09 | 2022-04-12 | 中石化南京化工研究院有限公司 | Self-tackifying surfactant composition containing polyether chain segment for profile control and flooding |
| CN114316938B (en) * | 2020-10-09 | 2023-01-31 | 中石化南京化工研究院有限公司 | Self-tackifying surfactant composition containing polyether chain segment for profile control and flooding |
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