CN104371693B - A kind of oil displacement agent composition and preparation method thereof - Google Patents
A kind of oil displacement agent composition and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to oil displacement agent composition and preparation method thereof, said composition contains nonionic surfactant and selected from formula（1）And formula（2）One or more heatproof components in the compound of shown structure, wherein, X1、X2And Y2Respectively C4‑C24Alkylidene；R1And R2Respectively optionally by C1‑C3Alkyl-substituted phenyl or condensed ring radical, the phenyl ring number of condensed ring radical is the C on 24, phenyl or condensed ring radical1‑C3Alkyl number be no more than 4；Z1And Z2It is each independently selected from one kind in carboxyl, hydroxyl, amido and sulfonic group；And on the basis of the gross weight of combined thing, the content of heatproof component is 5 90 weight %, and the content of nonionic surfactant is 10 95 weight %.Said composition resistance to elevated temperatures is good and can be suitably used for common heavy oil, super-viscous oil and special thick oil simultaneously.
Description
Technical field
The present invention relates to a kind of oil displacement agent composition and preparation method thereof.
Technical background
In recent years, International Crude Oil continues in high position vibration, and oil demand constantly rises.And with conventional crude yield
Reduction, the yield of viscous crude just rises year by year.Abroad, to improve thick oil recovery ratio, steam drives turns into heavy industrialization
The heavy crude heat extraction technology of application, global raising oil recovery factor（EOR）Steam drives project and accounts for total 35%, steam in project
Drive yield and account for the 80% of whole EOR projects.Domestic viscous crude field by developing for many years, and current problems faced is main force oil field
Have been enter into multi-round to handle up the development phase, occur in that low, reservoir characteristics variation of low formation pressure, aqueous height, oil well output etc. is asked
Topic, throughput prediction is worse and worse.Therefore the recovery ratio of heavy oil heat production reserves is improved, it is necessary to change development scheme.It is both domestic and external
Research shows that steam drive development is the further most effective mode for improving recovery factor of heavy oil reservoir.Domestic heavy crude reservoir is implemented to steam
Vapour drives, because oil reservoir buries the effect that depth, steam injection pressure are high, mass dryness fraction is low, hydrothermal area is wide, steam will be influenceed to drive, it is therefore necessary to enter
Row relevant art is tackled key problems, and research steam chemical flooding further improves the application effect of steam drive, is adopted so as to reach and increase substantially
Yield.
The topmost effect of steam drive development process oil displacement agent is to make the emulsion of viscous crude formation oil-in-water type, so that greatly
Amplitude reduction viscosity of thickened oil, improves recovery ratio.Steam drive development requires higher to the heat resistance of oil displacement agent, and usual steam involves
Band temperature range is 100 DEG C~220 DEG C, and the temperature field of steam is along steam injection well 150m or so radius, if adopted in operation process
Take chemical agent with steam injection displacement mode, the temperature tolerance of oil displacement agent must just reach 300 DEG C.Therefore, for steam-drive process
Viscous crude oil displacement agent just necessary high temperature resistant, and with the characteristics of viscosity break ratio is high under the high temperature conditions, just can guarantee that steam drive development
Effect, so it is the further key for improving steam drive development effect to develop resistant to elevated temperatures oil displacement agent system.
In the conventional viscous crude surfactant oil displacement in current oil field, document report and practical application it is more be nonionic
Surfactant, anion surfactant, amphoteric surfactant and the compound between them, although the low temperature displacement of reservoir oil is imitated
Fruit preferably, but still haves the shortcomings that temperature tolerance is poor, and thermal decomposition occurs in steam-drive process, so that viscosity reducing effect becomes
Difference loses viscosity reduction effect；Although some compound heat resistances reach requirement, cost is high, limits it and uses.For example：
CN102352228A discloses a kind of with steam high temperature resistance super viscosity reducer for extremely-viscous oil and preparation method thereof.The drop
Adhesive composition is extended by petroleum sodium sulfonate formaldehyde condensation products, NPE sodium sulfonate, sodium acid carbonate, high temperature film
Agent is constituted, and stratum can be injected before steam injection, also can be with note.Said composition has heatproof up to 350 DEG C of performance, but nonyl therein
The cost height of base phenol polyethenoxy ether sodium sulfonate is to restrict its bottleneck promoted.
CN102002354A reports a kind of oil displacement agent with ultra-low oil-water interfacial tension, and the oil displacement agent includes amphion surface
Activating agent, nonionic surfactant and water.Wherein zwitterionic surfactant is lived for the glycine betaine surface containing C12-C16
Property, nonionic surfactant is a kind of molecule containing 9-10 polyoxyethylene group.Described oil displacement agent is at 25~85 DEG C
Within the temperature range of, without adding alkali, it can be down to oil water interfacial tension ultralow.But at a temperature of more than 100 DEG C, oil displacement agent
Interfacial activity is reduced.In addition, the cost of the oil displacement agent is too high.
《Speciality Petrochemicals is in progress》The 1st phase " aliphatic alcohol polyoxyethylene sulfonate heat-resistant salt-resistant Journal of Sex Research " one of volume 9
Text reports aliphatic alcohol polyoxyethylene sulfonate（AEOS）(nonionic-anion surfactant) and heavy alkylbenzene sulfonate
The heat resistance of compound.Percent hydrolysis is low under conditions of 85 DEG C, pH is 6, and the heat resistance having had.But such surface
Activating agent compound is not appropriate for the condition that heavy crude heat extraction is up to 300 DEG C.
CN1994544A discloses a kind of synthetic method of heat-resistance type surfactant, is the quaternary amine of a class imino group.
Structure to glycine betaine is improved, because having wide application prospect with resistance to elevated temperatures, but cationic
There is the characteristics of stratum adsorption loss is big in activating agent.
CN1148519A discloses a kind of resistant to elevated temperatures super―heavy oil thinner and preparation method thereof, conventional available for viscous crude
Handle up well or thermal production well.The super―heavy oil thinner is prepared from by surfactant, accelerator and conditioning agent, its temperature tolerance
It is good, stable oil-in-water emulsion can be formed at a temperature of 20-350 DEG C in stratum or pit shaft, with the low spy of the few cost of consumption
Point.But 50 DEG C of viscosity only 26200mPa.s of the viscosity reduction viscous crude mentioned in the invention, belong to the category of special thick oil, for 50 DEG C
The super-viscous oil viscosity reducing effect that viscosity is more than 50000mPa.s is not referred to.
The content of the invention
The purpose of the present invention is to overcome the defect of above-mentioned prior art there is provided a kind of high-temperature resistance is strong, cost is low and drop
Viscous rate is high and can be suitably used for oil displacement agent composition of common heavy oil, super-viscous oil and special thick oil and preparation method thereof simultaneously.
The present invention provides a kind of oil displacement agent composition, and the oil displacement agent composition contains heatproof component and non-ionic surface active
Agent, wherein, the heatproof component, which is selected from, has formula（1）And formula（2）One or more in the compound of shown structure：
Wherein, X1、X2And Y2Respectively C4-C24Alkylidene；
R1And R2Respectively optionally by C1-C3Alkyl-substituted phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical is
C on 2-4, and the phenylene or condensed ring radical1-C3Alkyl number be no more than 3；
Z1And Z2One kind in carboxyl, hydroxyl, amido and sulfonic group is each independently selected from, and, combined with the oil displacement agent
On the basis of the gross weight of thing, the content of the heatproof component is 5-90 weight %, and the content of the nonionic surfactant is
10-95 weight %.
The present invention provides the preparation method of above-mentioned oil displacement agent composition, and this method includes that heatproof component and nonionic table will be contained
The material of face activating agent is well mixed, wherein, the heatproof component, which is selected from, has formula（1）And formula（2）The chemical combination of shown structure
One or more in thing：
Wherein, X1、X2And Y2Respectively C4-C24Alkylidene；
R1And R2Respectively optionally by C1-C3Alkyl-substituted phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical is
C on 2-4, and the phenylene or condensed ring radical1-C3Alkyl number be no more than 3；
Z1And Z2One kind in carboxyl, hydroxyl, amido and sulfonic group is each independently selected from, and,
The consumption of the heatproof component and nonionic surfactant causes, using the gross weight of the oil displacement agent composition as
Benchmark, the consumption of the heatproof component is 5-90 weight %；The consumption of the nonionic surfactant is 10-95 weight %.
The present invention also provides a kind of oil displacement agent composition as made from the above method.
The heatproof component contained in the oil displacement agent composition that the present invention is provided has the advantages that heat resistance is good, by its with it is non-
Ionic surface active agent is used cooperatively, and the oil displacement agent composition of gained has excellent high temperature resistance and viscosity-reducing performance, can carry significantly
The recovery ratio of high oil, and the cost of the oil displacement agent composition of the invention provided is low, it is adaptable to industrial applications.In addition, this hair
The oil displacement agent composition of bright offer is applicable not only to common heavy oil and special thick oil viscosity reduction, while suitable for the viscosity reduction of super-viscous oil.
Embodiment
The present invention provides a kind of oil displacement agent composition, and the oil displacement agent composition contains heatproof component and non-ionic surface active
Agent, wherein, the heatproof component, which is selected from, has formula（1）And formula（2）One or more in the compound of shown structure：
Wherein, X1、X2And Y2Respectively C4-C24Alkylidene；
R1And R2Respectively optionally by C1-C3Alkyl-substituted phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical is
C on 2-4, and the phenylene or condensed ring radical1-C3Alkyl number be no more than 4；
Z1And Z2One kind in carboxyl, hydroxyl, amido and sulfonic group is each independently selected from, and,
On the basis of the gross weight of the oil displacement agent composition, the content of the heatproof component is 5-90 weight %, described non-
The content of ionic surface active agent is 10-95 weight %.
In the present invention, the carbon number of alkylidene refers to the carbon number in alkylen backbone, does not include the carbon of substituent
Atomicity.In formula（2）In shown compound, X2CH3And Y2CH3R can be connected to2On different loci on.
In the present invention, phenylene or condensed ring radical refer to hydrogen atom on phenyl ring or condensed ring except optionally by C1-C3Alkyl take
In generation, is outer, has two hydrogen atoms respectively by X1And Z1Or X2And Z2Substitution, wherein by X1And Z1Or X2And Z2Substituted hydrogen atom can
To be located at ortho position, meta or para position mutually, the C of substituent is used as1-C3Alkyl can be located at X1Or X2Ortho position, meta or right
Position.For formula（1）Shown structure, further preferred X1And Z1It is located at contraposition mutually；For formula（1）Shown structure, further preferably
X2Or Y2And Z2It is located at contraposition mutually.
In the present invention, the condensed ring radical is preferably fused ring aryl, such as naphthyl.
Present inventors discovered unexpectedly that, by adding particular kind of temperature tolerance into nonionic surfactant
Component, can improve the temperature tolerance of viscous crude oil displacement agent composition.Heatproof component wherein used as asphaltene dispersants document once
Have been reported that, but have not been used to the report in reducing thick oil viscosity field；The nonionic surfactant has preferable to most viscous crude
Viscosity reduction ability, but there is the problem of temperature tolerance is poor, when temperature in use is more than 200 DEG C, it may occur that decompose, so as to lose viscosity reduction work
With.But, can by adding the particular kind of heatproof component of proper proportion in the nonionic surfactant to temperature tolerance difference
Improve composition heat resistance, so as to get composition heat decomposition temperature it is significantly raised, thick oil steam drive process can be met
100~300 DEG C of high-temperature operation condition.And said composition is cheap.
According to the present invention, the C1-C3Alkyl can be straight chain normal chain alkyl or the isomeric alkane with side chain
Base, for example, the alkyl can be methyl, ethyl, propyl group, isopropyl.
The oil displacement agent composition provided according to the present invention, above-mentioned heatproof component and the content of nonionic surfactant can
To change within a large range.In situations where it is preferred, on the basis of the gross weight of the oil displacement agent composition, the heatproof
The content of component is 5-80 weight %, and the content of the nonionic surfactant is 20-95 weight %.
In the case of further preferably, X1、X2And Y2Respectively C7-C19Alkylidene, such as C7H14（Heptamethylene）、C8H16(Ya Xin
Base), C9H18、C10H20、C11H22、C12H24、C13H26、C14H28、C15H30、C16H32Or C17H34。
In the case of further preferably, R1And R2For optionally by C1-C2Alkyl-substituted phenylene or condensed ring radical.
The present inventor is by depth research discovery, X1、X2And Y2Respectively C7-C19Alkylidene；R1And R2For
Optionally by C1-C2Alkyl-substituted phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical is 2-3, and the phenyl or condensed ring
C on base1-C2Alkyl number be no more than 1 when, the oil displacement efficiency of the oil displacement agent composition of gained can be improved further.It is further excellent
Selection of land, X1、X2And Y2Each stand alone as C7-C19Alkylidene；R1And R2For phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical
For 2-3, in this case, the alkylidene, phenylene and condensed ring radical in heatproof component be not by C1-C3Alkyl substitution, institute
The oil displacement efficiency of the oil displacement agent composition obtained is good, and raw material is easy to get, and is further reduced into instinct.
According to the present invention, with formula（1）-（3）The instantiation of the compound of shown structure can be：4- octadecyl benzene
Phenol, dinonylnaphthalene sulfonic acid and 4- octyl benzoic acids.
According to the present invention, in a kind of embodiment, the oil displacement agent composition also contains water, and with the oil displacement agent composition
Gross weight on the basis of, the content of the heatproof component is 5-85 weight %；The content of the nonionic surfactant is 10-
90 weight %, the content of the water is 3-5 weight %.
According to the present invention, the nonionic surfactant can be it is known in those skilled in the art can be used for improve
Under the various nonionic surfactants of oil recovery, preferable case, the nonionic surfactant is selected from poly alkyl alcohol
Oxygen vinethene, APES, anhydrous sorbitol APEO, polyoxyethylene carboxylate, sorbitan ester
With the one or more in polyoxyethylate amide.
The AEO for example can be that formula is R4O(CH2CH2O)mH, wherein R4For C10-C20Alkane
Base, m is 6-40 integer, preferably R4For C12-C18Alkyl, m be 8-35 integer.The instantiation of AEO
Can be, but not limited to for：Paregal O -8（C12-C18Aliphatic alcohol polyethenoxy（8）Ether）, paregal O -10（C12-C18Poly alkyl alcohol
Oxygen ethene（10）Ether）, paregal O -15（C12-C18Aliphatic alcohol polyethenoxy（15）Ether）, paregal O -20（C12-C18Poly alkyl alcohol
Oxygen ethene（20）Ether）, paregal O -30（C12-C18Aliphatic alcohol polyethenoxy（30）Ether）Deng；The APES
Formula is R2C6H4O(CH2CH2O)nH, wherein, R2For C6-C14Alkyl, n be 3-30 integer, preferably R2For C8-C12Alkyl,
N is 10-20 integer.
The instantiation of the APES can be, but not limited to for：OP-3（Octyl phenol polyoxyethylene（3）
Ether）、OP-6（Octyl phenol polyoxyethylene（6）Ether）、OP-10（Octyl phenol polyoxyethylene（10）Ether）、OP-20（Octyl phenol polyoxy second
Alkene（20）Ether）、OP-30（Octyl phenol polyoxyethylene（30）Ether）、NP-4（Nonyl pheno（4）Ether）、NP-6（Nonyl phenol gathers
Oxygen ethene（6）Ether）、NP-10（Nonyl pheno（10）Ether）、NP-21（Nonyl pheno（21）Ether）、NP-30（Nonyl
Base phenol polyethenoxy（30）Ether）.
The instantiation of the sorbitan fatty acid ester APEO can be, but not limited to as Tween-80（Polyoxy
Ethene（20）Sorbitan monooleate）, Tween-60（Polyoxyethylene（20）Sorbitan monostearate）With tween-
20（Polyoxyethylene（20）Sorbitan mono-laurate）.
The instantiation of the polyoxyethylene carboxylate can be, but not limited to gather for laurate polyoxyethylene ester, stearic acid
Oxygen vinyl acetate and polyoxyethylene oleic acid ester.
The instantiation of the sorbitan fatty acid ester can be, but not limited to as Arlacel-80（Anhydrous sorbitol list oil
Acid esters）, Arlacel-60（Sorbitan monostearate）And Arlacel-20（Sorbitan mono-laurate）.
The instantiation of the polyoxyethylate amide can be, but not limited to as fatty monoethanol amide, coconut oil fat
Sour diglycollic amide and higher aliphatic acid diglycollic amide.
The present invention provides the preparation method of above-mentioned oil displacement agent composition, and this method includes that heatproof component and nonionic table will be contained
The material of face activating agent is well mixed, and the heatproof component, which is selected from, has formula（1）And formula（2）In the compound of shown structure
It is one or more：
Wherein, X1、X2And Y2Respectively C4-C24Alkylidene；
R1And R2Respectively optionally by C1-C3Alkyl-substituted phenylene or condensed ring radical, the phenyl ring number of the condensed ring radical is
C on 2-4, and the phenylene or condensed ring radical1-C3Alkyl number be no more than 4；
Z1And Z2One kind in carboxyl, hydroxyl, amido and sulfonic group is each independently selected from, and,
The consumption of the heatproof component and nonionic surfactant causes, using the gross weight of the oil displacement agent composition as
Benchmark, the consumption of the heatproof component is 5-90 weight %；The consumption of the nonionic surfactant is 10-95 weight %.
Explanation, the preferable case of each group in described heatproof component；The species and preferable case of the surfactant；
Consumption of heatproof component and surfactant etc. is same as described above in oil displacement agent composition, will not be described here.
In one embodiment, this method includes mixing the material of aqueous, heatproof component and nonionic surfactant
Close uniform, and the consumption of the heatproof component, nonionic surfactant and water causes, with the gross weight of the oil displacement agent composition
On the basis of amount, the consumption of the heatproof component is 5-85 weight %；The consumption of the nonionic surfactant is 10-90 weights
% is measured, the consumption of the water is 3-5 weight %.
Order by merging of the present invention to water, heatproof component and nonionic surfactant is not particularly limited, can be with each
Order is planted to mix.The condition of mixing can it is various oil displacement agent composition is not adversely affected under conditions of carry out, for example,
It can mix at ambient temperature.
There is no particular limitation for mixing temperature and incorporation time of the present invention to heatproof component and nonionic surfactant,
As long as being well mixed between making component, in situations where it is preferred, the mixing temperature is 10-40 DEG C, preferably 20-30
℃；The incorporation time is 60-150min, preferably 90-120min.
The present invention also provides a kind of oil displacement agent composition as made from the above method.
For a better understanding of the present invention, it is expanded on further present disclosure with reference to embodiment, but the present invention
Content is not limited solely to the following examples.
Unless stated otherwise, agents useful for same can pass through in experimental example of the invention, preparation example, embodiment and comparative example
It is commercially available.Described part is parts by weight.
In following examples, the viscosity of viscous crude is that method is determined according to specified in GB12005.1-89, uses following public affairs
Formula calculates viscosity break ratio：
Viscosity break ratio（%）=(viscosity of thickened oil after viscous crude initial viscosity-addition oil displacement agent composition solution processing)/viscous crude
Initial viscosity × 100%.
Initial pyrolyzation temperature uses gravitational thermal analysis method, and test condition is：Nitrogen protection, rate of warming be 10 DEG C/
Determined under the conditions of min, 20 DEG C to 600 DEG C temperature ranges, thermal gravimetric analysis curve reads heat decomposition temperature as obtained by experiment.
Heat resistance is analyzed：3 weight % oil displacement agent composition solution is placed in heat treatment in 300 DEG C of autoclaves and used after 3 hours
High salinity hard water（Total salinity 20000mg/L, wherein calcium ions and magnesium ions concentration are 1500mg/L）1 weight % is diluted to, toward 100g
The 1 weight % displacement of reservoir oil agent solutions that Shengli Oil Field viscous crude is added after 40g dilutions, observe whether viscous crude is emulsified after stirring.
Embodiment 1
The present embodiment is used for the oil displacement agent composition for illustrating that the present invention is provided.
To 5 parts of dinonylnaphthalene sulfonic acids（CAS NO：25322-17-2）95 parts of OPEOs of middle addition（Zi Bohai
Outstanding Chemical Co., Ltd.'s production, OP-10）, stirring mixing 10min, obtains oil displacement agent composition Q1 at 25 DEG C.
Comparative example 1
With commercially available nonionic surfactant OPEO（Zibo Hai Jie Chemical Co., Ltd.s produce, OP-
10）Instead of the oil displacement agent composition Q1 described in embodiment 1, oil displacement agent DQ1 is obtained.
Embodiment 2
20 parts of anhydrous sorbitol APEOs are added into 80 parts of heatproof component 4- octadecylphenols（Zibo sea outstanding personization
Work Co., Ltd, Tween 80）, stirring mixing 10min, obtains oil displacement agent composition Q2 at 25 DEG C.
Comparative example 2
With commercially available nonionic surfactant anhydrous sorbitol APEO（Zibo Hai Jie Chemical Co., Ltd.s, tween
80）Instead of the oil displacement agent composition Q2 of embodiment 2, oil displacement agent DQ2 is obtained.
Embodiment 3
50 parts of polyoxyethylene octadecanols are added into 50 parts of heatproof component 4- octyl benzoic acids（The outstanding chemical industry in Zibo sea is limited
Company's paregal O -20）, stirring mixing 10min, obtains oil displacement agent composition Q3 at 25 DEG C.
Comparative example 3
With commercially available nonionic surfactant polyoxyethylene octadecanol（Zibo Hai Jie Chemical Co., Ltd.s, paregal O-
20）Instead of oil displacement agent composition Q3 described in embodiment 3, oil displacement agent DQ3 is obtained.
Test case 1
Q1 prepared by embodiment 1 high salinity hard water（Total salinity 20000mg/L, wherein calcium ions and magnesium ions concentration is
1500mg/L）The oil displacement agent composition solution that concentration is 3 weight % is made into, thermogravimetric analysis is carried out.
Above-mentioned 3 weight % oil displacement agent composition is subjected to initial pyrolyzation temperature analysis.
Above-mentioned 3 weight % oil displacement agent composition solution is placed in after being heat-treated 3 hours in 300 DEG C of autoclaves and uses high mineralization
Spend hard water（Total salinity 20000mg/L, wherein calcium ions and magnesium ions concentration are 1500mg/L）1 weight % is diluted to, toward 100g Shengli Oils
The northern viscous crude of Tanaka two（50 DEG C of viscosity are 15470mPa.s）The 1 weight % displacement of reservoir oil agent solutions added after 42g dilutions, so that at 50 DEG C
The viscosity of viscous crude declines 70-80% after stirring 5 minutes, then using Hakke VT550 type rotation viscometers（100r/m）Test breast
Change the viscosity of viscous crude, test result is shown in Table 1.
Test comparison example 1
Performance test is carried out according to the method for test case 1, unlike, replace the institute of embodiment 1 with oil displacement agent composition DQ1
The oil displacement agent composition Q1 stated.
Test case 2
Oil displacement agent composition Q2 high salinity hard water prepared by embodiment 2（Total salinity 20000mg/L, wherein calcium
Magnesium ion concentration is 1500mg/L）The oil displacement agent composition solution that concentration is 3 weight % is made into, thermogravimetric analysis is carried out.
Above-mentioned 3 weight % oil displacement agent composition solution is subjected to initial pyrolyzation temperature analysis.
Above-mentioned 3 weight % oil displacement agent composition solution is placed in after being heat-treated 3 hours in 300 DEG C of autoclaves and uses high mineralization
Spend hard water（Total salinity 20000mg/L, wherein calcium ions and magnesium ions concentration are 1500mg/L）1 weight % is diluted to, toward 100g Shengli Oils
Tian Danjia temples viscous crude（50 DEG C of viscosity are 9096mPa.s）The 0.5 weight % displacement of reservoir oils agent solution added after 40g dilutions is so that at 50 DEG C
After stirring 5 minutes, the viscosity of viscous crude declines 70-80%, using Hakke VT550 type rotation viscometers（100r/m）Test emulsification
The viscosity of viscous crude, test result is shown in Table 1.
Test comparison example 2
Performance test is carried out according to the method for test case 2, unlike, replace the institute of embodiment 2 with oil displacement agent composition DQ2
The oil displacement agent composition Q2 stated.
Test case 3
Oil displacement agent composition Q3 high salinity hard water prepared by embodiment 3（Total salinity 20000mg/L, wherein calcium
Magnesium ion concentration is 20000mg/L）The oil displacement agent composition solution that concentration is 3 weight % is made into, thermogravimetric analysis is carried out.
Above-mentioned 3 weight % oil displacement agent composition solution is subjected to initial pyrolyzation temperature analysis.
Above-mentioned 3 weight % oil displacement agent composition solution is placed in after being heat-treated 3 hours in 300 DEG C of autoclaves and uses high mineralization
Spend hard water（Total salinity 20000mg/L, wherein calcium ions and magnesium ions concentration are 20000mg/L）1 weight % is diluted to, toward 100g Xinjiang
Tahe Heavy Crude（50 DEG C of viscosity are 123220mPa.s）The 0.5 weight % displacement of reservoir oil agent solutions added after 40g dilutions, so as to be stirred at 50 DEG C
Mix after 5 minutes, the viscosity of viscous crude declines 70-80%, using Hakke VT550 type rotation viscometers（100r/m）Test emulsification is thick
The viscosity of oil, test result is shown in Table 1.
Test comparison example 3
Performance test is carried out according to the method for test case 3, unlike, replace the institute of embodiment 3 with oil displacement agent composition DQ3
The oil displacement agent composition Q3 stated.
Table 1
The oil displacement agent composition provided using the present invention, the heat decomposition temperature of oil displacement agent are provided from the data in table 1
Improved, and have good viscosity reducing effect to common heavy oil, special thick oil and super-viscous oil.
Claims (9)
1. a kind of oil displacement agent composition, the oil displacement agent composition contains heatproof component and nonionic surfactant, its feature exists
In, the heatproof component is the one or more in 4- octadecylphenols, dinonylnaphthalene sulfonic acid and 4- octyl benzoic acids, and,
On the basis of the gross weight of the oil displacement agent composition, the content of the heatproof component is 5-90 weight %, the nonionic
The content of surfactant is 10-95 weight %.
2. oil displacement agent composition according to claim 1, wherein, on the basis of the gross weight of the oil displacement agent composition,
The content of the heatproof component is 5-80 weight %, and the content of the nonionic surfactant is 20-95 weight %.
3. oil displacement agent composition according to claim 1, wherein, the oil displacement agent composition also contains water, and is driven with described
On the basis of the gross weight of oil agent composition, the content of the heatproof component is 5-85 weight %, the nonionic surfactant
Content is 10-90 weight %, and the content of the water is 3-5 weight %.
4. the oil displacement agent composition according to any one in claim 1-3, wherein, the nonionic surfactant choosing
From AEO, APES, anhydrous sorbitol APEO, polyoxyethylene carboxylate, mistake
One or more in water sorbitol ester and polyoxyethylate amide.
5. a kind of preparation method of oil displacement agent composition, this method is included the thing of component containing heatproof and nonionic surfactant
Material is well mixed, it is characterised in that the heatproof component is 4- octadecylphenols, dinonylnaphthalene sulfonic acid and 4- octyl benzoic acids
In one or more, and,
The consumption of the heatproof component and nonionic surfactant make it that the gross weight using the oil displacement agent composition is base
Standard, the consumption of the heatproof component is 5-90 weight %, and the consumption of the nonionic surfactant is 10-95 weight %.
6. method according to claim 5, wherein, the consumption of the heatproof component and nonionic surfactant causes,
On the basis of the gross weight of the oil displacement agent composition, the consumption of the heatproof component is 5-80 weight %, the non-ionic surface
The consumption of activating agent is 20-95 weight %.
7. the method according to claim 5 or 6, wherein, the nonionic surfactant is selected from alkylphenol-polyethenoxy
Ether, AEO, anhydrous sorbitol APEO, polyoxyethylene carboxylate, sorbitan ester and polyoxy
One or more in ethernamine.
8. method according to claim 5, wherein, the temperature of the mixing is 10-40 DEG C, and the time of the mixing is
60-150min。
9. oil displacement agent composition made from the method in claim 5-8 described in any one.
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