CN104371693A - Oil displacement agent composition and preparation method thereof - Google Patents
Oil displacement agent composition and preparation method thereof Download PDFInfo
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- CN104371693A CN104371693A CN201310359237.4A CN201310359237A CN104371693A CN 104371693 A CN104371693 A CN 104371693A CN 201310359237 A CN201310359237 A CN 201310359237A CN 104371693 A CN104371693 A CN 104371693A
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
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Abstract
The invention relates to an oil displacement agent composition and a preparation method thereof. The composition contains a nonionic surfactant and a heatproof component which is selected from one or more of compounds with a structure in a formula (1) and a formula (2), wherein X1, X2 and Y2 are C4-C24 alkylene respectively; R1 and R2 are optionally C1-C3 alkyl-substituted phenyl or condensed ring group respectively, the phenyl ring number of condensed ring group is 2-4, C1-C3 alkyl number on phenyl or condensed ring group can not exceed 4; Z1 and Z2 are respectively and independently selected from one of carboxyl, hydroxyl, amido and slfonyl; b taking total weight of the composition as a reference, the heatproof component content is 5-90wt%, and nonionic surfactant content is 10-95wt%. The composition has the advantage of good high temperature resistance performance and is suitable for common thickened oil, super heavy oil and extra-heavy oil.
Description
Technical field
The present invention relates to a kind of oil-displacing agent composition and method of making the same.
Technical background
In recent years, International Crude Oil continues in high position vibration, and petroleum demand constantly rises.And along with the minimizing of conventional crude output, the output of viscous crude rises just year by year.Abroad, for improving thick oil recovery ratio, steam flood has become the heavy crude heat extraction technology of heavy industrialization application, and in raising oil recovery factor (EOR) project in the whole world, steam flood project accounts for 35% of sum, and steam flood output accounts for 80% of whole EOR project.Domestic viscous crude field is through developing for many years, and current problems faced is that main force oil field has entered high round and handles up the development phase, and occurred the problems such as low, the moisture height of sand pressure, oil well output are low, reservoir characteristics variation, throughput prediction worse and worse.Therefore to improve the recovery ratio of heavy oil heat production reserves, must development scheme be changed.Research both domestic and external shows, steam drive development is the most effective means improving recovery factor of heavy oil reservoir further.Domestic heavy crude reservoir implements steam flood, due to oil reservoir bury deeply, steam injection pressure is high, mass dryness fraction is low, hydrothermal area is wide, will affect the effect of steam flood, therefore must carry out relevant art tackling key problem, research steam chemical flooding improves the effect of steam flood further, thus reaches and increase substantially recovery ratio.
The topmost effect of steam drive development process oil-displacing agent is the milk sap that viscous crude can be made to form oil-in-water-type, thus significantly reduces viscosity of thickened oil, improves recovery ratio.Steam drive development requires higher to the heat resistance of oil-displacing agent, usual steam swept zone temperature range is 100 DEG C ~ 220 DEG C, the temperature field of steam is along steam injection well about 150m radius, if take chemical agent to accompany steam treatment displacement mode in operation process, the temperature tolerance of oil-displacing agent just must reach 300 DEG C.Therefore, viscous crude oil-displacing agent for steam-drive process just must be high temperature resistant, and have the high feature of viscosity break ratio under the high temperature conditions, the effect of guarantee steam drive development, so developing resistant to elevated temperatures oil-displacing agent system is improve the key of steam drive development effect further.
In the viscous crude surfactant oil displacement that current oil field is conventional, bibliographical information and practical application more be nonionogenic tenside, anion surfactant, amphoterics and the compound between them, although low temperature oil displacement efficiency is better, but still there is the shortcoming of temperature tolerance difference, in steam-drive process, there will be thermolysis, thus make viscosity reducing effect be deteriorated or lose viscosity reduction effect; Although some compound heat resistance reaches requirement, cost is high, limits it and uses.Such as:
CN102352228A discloses a kind of companion's steam high temperature resistance super viscosity reducer for extremely-viscous oil and preparation method thereof.Described viscosity-depression agent composition is made up of petroleum sodium sulfonate formaldehyde condensation products, polyoxyethylene nonylphenol ether sodium sulfonate, sodium bicarbonate, high temperature film spreading agent, can inject stratum before steam treatment, also can accompany note.Said composition has the performance that heatproof reaches 350 DEG C, but the cost height of polyoxyethylene nonylphenol ether sodium sulfonate is wherein its bottleneck promoted of restriction.
CN102002354A reports a kind of oil displacement agent with ultra-low oil-water interfacial tension, and this oil-displacing agent comprises zwitterionics, nonionogenic tenside and water.Wherein zwitterionics is the trimethyl-glycine surfactivity containing C12-C16, and nonionogenic tenside is a kind of molecule containing 9-10 polyoxyethylene group.Described oil-displacing agent, in the temperature range of 25 ~ 85 DEG C, without the need to adding alkali, can make oil water interfacial tension be down to ultralow.But at the temperature more than 100 DEG C, the interfacial activity of oil-displacing agent reduces.In addition, the high cost of this oil-displacing agent.
" Speciality Petrochemicals progress " the 9th volume the 1st phase " aliphatic alcohol polyoxyethylene sulfonate heat-resistant salt-resistant Journal of Sex Research " literary composition reports the heat resistance of aliphatic alcohol polyoxyethylene sulfonate (AEOS) (nonionic-anion surfactant) and heavy alkylbenzene sulfonate compound.85 DEG C, pH be 6 Water Under solution rate low, and the heat resistance had.But such surfactant blend is also not suitable for the condition of heavy crude heat extraction up to 300 DEG C.
CN1994544A discloses a kind of synthetic method of heat-resistance type tensio-active agent, is the quaternary amine of a class imino-.The structure of trimethyl-glycine being improved, because having resistance to elevated temperatures, there is wide application prospect, but there is the large feature of stratum adsorption losses in cationic surfactant.
CN1148519A discloses a kind of resistant to elevated temperatures super―heavy oil viscosity-depression agent and preparation method thereof, can be used for viscous crude routine and to handle up well or thermal recovery well.This super―heavy oil viscosity-depression agent is prepared from by tensio-active agent, promotor and conditioning agent, and its temperature tolerance is good, can form stable water external emulsion in stratum or pit shaft at 20-350 DEG C of temperature, has the advantages that the few cost of consumption is low.But the viscosity reduction viscous crude mentioned in this invention 50 DEG C of viscosity are only 26200mPa.s, belong to the category of special thick oil, and the super-viscous oil viscosity reducing effect 50 DEG C of viscosity being greater than to 50000mPa.s is not mentioned.
Summary of the invention
Object of the present invention is the defect overcoming above-mentioned prior art, provides that a kind of high-temperature resistance is strong, cost is low and viscosity break ratio is high and can be applicable to the oil-displacing agent composition and method of making the same of common heavy oil, super-viscous oil and special thick oil simultaneously.
The invention provides a kind of oil-displacing agent composition, this oil-displacing agent composition contains heatproof component and nonionogenic tenside, wherein, described heatproof component be selected from the compound with the structure shown in formula (1) and formula (2) one or more:
Wherein, X
1, X
2and Y
2be C separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 3;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and with the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-90 % by weight, and the content of described nonionogenic tenside is 10-95 % by weight.
The invention provides the preparation method of above-mentioned oil-displacing agent composition, the method comprises even for the mixing of materials containing heatproof component and nonionogenic tenside, wherein, described heatproof component is selected from one or more in the compound with the structure shown in formula (1) and formula (2):
Wherein, X
1, X
2and Y
2be C separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 3;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and,
The consumption of described heatproof component and nonionogenic tenside makes, and with the gross weight of described oil-displacing agent composition for benchmark, the consumption of described heatproof component is 5-90 % by weight; The consumption of described nonionogenic tenside is 10-95 % by weight.
The present invention also provides a kind of oil-displacing agent composition obtained by aforesaid method.
The heatproof component contained in oil-displacing agent composition provided by the invention has the good advantage of heat resistance, by itself and nonionogenic tenside with the use of, the oil-displacing agent composition of gained has excellent high temperature resistance and viscosity-reducing performance, greatly can improve the recovery ratio of oil, and the cost of oil-displacing agent composition provided by the invention is low, is applicable to industrial applications.In addition, oil-displacing agent composition provided by the invention is not only applicable to common heavy oil and special thick oil viscosity reduction, is applicable to the viscosity reduction of super-viscous oil simultaneously.
Embodiment
The invention provides a kind of oil-displacing agent composition, this oil-displacing agent composition contains heatproof component and nonionogenic tenside, wherein, described heatproof component be selected from the compound with the structure shown in formula (1) and formula (2) one or more:
Wherein, X
1, X
2and Y
2be C separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 4;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and,
With the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-90 % by weight, and the content of described nonionogenic tenside is 10-95 % by weight.
In the present invention, the carbonatoms of alkylidene group refers to and does not comprise substituent carbonatoms by the carbonatoms in alkylen backbone.In the compound shown in formula (2), X
2cH
3and Y
2cH
3r can be connected to
2on different loci on.
In the present invention, phenylene or condensed ring radical refer to that hydrogen atom on phenyl ring or condensed ring is except optionally by C
1-C
3alkyl replace outside, have two hydrogen atoms respectively by X
1and Z
1or X
2and Z
2replace, wherein by X
1and Z
1or X
2and Z
2the hydrogen atom replaced can be positioned at mutually ortho position, a position or contraposition, the alternatively C of base
1-C
3alkyl can be positioned at X
1or X
2ortho position, a position or contraposition.For structure formula (1) Suo Shi, preferred X further
1and Z
1be positioned at contraposition mutually; For structure formula (1) Suo Shi, preferred X further
2or Y
2and Z
2be positioned at contraposition mutually.
In the present invention, described condensed ring radical is preferably fused ring aryl, as naphthyl.
The present inventor is surprised to find that, by adding the temperature tolerance component of particular types in nonionogenic tenside, can improve the temperature tolerance of viscous crude oil-displacing agent composition.Heatproof component wherein used once had report as asphaltene dispersants document, but not for the report in reducing thick oil viscosity field; Described nonionogenic tenside has good viscosity reduction ability to most viscous crude, but there is the problem of temperature tolerance difference, when use temperature is more than 200 DEG C, can decompose, thus lose viscosity reduction effect.But, by adding the heatproof component of the particular types of suitable proportion in the nonionogenic tenside to temperature tolerance difference, the heat resistance of composition can be improved, the heat decomposition temperature of the composition obtained obviously is raised, the high-temperature service condition of thick oil steam drive process 100 ~ 300 DEG C can be met.And said composition is cheap.
According to the present invention, described C
1-C
3alkyl can be straight chain normal chain alkyl, also can be the isomery alkyl with side chain, such as, this alkyl can be methyl, ethyl, propyl group, sec.-propyl.
According to oil-displacing agent composition provided by the invention, above-mentioned heatproof component and the content of nonionogenic tenside can change within a large range.In the preferred case, with the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-80 % by weight, and the content of described nonionogenic tenside is 20-95 % by weight.
Under further preferable case, X
1, X
2and Y
2be C separately
7-C
19alkylidene group, as C
7h
14(sub-heptyl), C
8h
16(octylene), C
9h
18, C
10h
20, C
11h
22, C
12h
24, C
13h
26, C
14h
28, C
15h
30, C
16h
32or C
17h
34.
Under further preferable case, R
1and R
2for optionally by C
1-C
2alkyl replace phenylene or condensed ring radical.
The present inventor through in depth studying discovery, X
1, X
2and Y
2be C separately
7-C
19alkylidene group; R
1and R
2for optionally by C
1-C
2the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-3, and the C on described phenyl or condensed ring radical
1-C
2alkyl number when being no more than 1, the oil displacement efficiency of the oil-displacing agent composition of gained can improve further.Further preferably, X
1, X
2and Y
2respective is independently C
7-C
19alkylidene group; R
1and R
2for phenylene or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-3, and in such cases, the alkylidene group in heatproof component, phenylene and condensed ring radical be not all by C
1-C
3alkyl replace, the oil displacement efficiency of the oil-displacing agent composition of gained is good, and raw material is easy to get, become instinct reduce further.
According to the present invention, the specific examples with the compound of structure shown in formula (1)-(3) can be: 4-octadecylphenol, dinonylnaphthalene sulfonic acid and 4-octyl benzoic acid.
According to the present invention, in a kind of embodiment, this oil-displacing agent composition is also containing water, and with the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-85 % by weight; The content of described nonionogenic tenside is 10-90 % by weight, and the content of described water is 3-5 % by weight.
According to the present invention, described nonionogenic tenside can be the various nonionogenic tensides that can be used for improving oil recovery known in those skilled in the art, under preferable case, described nonionogenic tenside be selected from fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, Sorbitan polyoxyethylenated alcohol, polyoxyethylene carboxylate, sorbitan ester and polyoxyethylate amide one or more.
Described fatty alcohol-polyoxyethylene ether can be such as general formula is R
4o (CH
2cH
2o)
mh, wherein R
4for C
10-C
20alkyl, m is the integer of 6-40, preferred R
4for C
12-C
18alkyl, m is the integer of 8-35.The specific examples of fatty alcohol-polyoxyethylene ether can be, but not limited to as paregal O-8(C
12-C
18aliphatic alcohol polyethenoxy (8) ether), paregal O-10(C
12-c
18aliphatic alcohol polyethenoxy (10) ether), paregal O-15(C
12-C
18aliphatic alcohol polyethenoxy (15) ether), paregal O-20(C
12-c
18aliphatic alcohol polyethenoxy (20) ether), paregal O-30(C
12-C
18aliphatic alcohol polyethenoxy (30) ether) etc.; The general formula of described alkylphenol polyoxyethylene is R
2c
6h
4o (CH
2cH
2o)
nh, wherein, R
2for C
6-C
14alkyl, n is the integer of 3-30, preferred R
2for C
8-C
12alkyl, n is the integer of 10-20.
The specific examples of described alkylphenol polyoxyethylene can be, but not limited to as 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 polyoxyethylene (20) ether), OP-30(octyl phenol polyoxyethylene (30) ether), NP-4(Nonyl pheno (4) ether), NP-6(Nonyl pheno (6) ether), NP-10(Nonyl pheno (10) ether), NP-21(Nonyl pheno (21) ether), NP-30(Nonyl pheno (30) ether).
The specific examples of described sorbitan fatty acid ester Soxylat A 25-7 can be, but not limited to as tween-80 (polyoxyethylene (20) sorbitan monooleate), Tween-60 (polyoxyethylene (20) sorbitan monostearate) and tween 20 (polyoxyethylene (20) sorbitan mono-laurate).
The specific examples of described polyoxyethylene carboxylate can be, but not limited to as lauric acid polyoxyethylene ester, polyoxyethylene stearic acid ester and polyoxyethylene oleic acid ester.
The specific examples of described sorbitan fatty acid ester can be, but not limited to as Arlacel-80 (sorbitan monooleate), Arlacel-60 (sorbitan monostearate) and Arlacel-20 (sorbitan mono-laurate).
The specific examples of described polyoxyethylate amide can be, but not limited to as fatty monoethanol amide, fatty acid distribution of coconut oil diglycollic amide and higher aliphatic acid diglycollic amide.
The invention provides the preparation method of above-mentioned oil-displacing agent composition, the method comprises will be even containing the mixing of materials of heatproof component and nonionogenic tenside, described heatproof component be selected from the compound with the structure shown in formula (1) and formula (2) one or more:
Wherein, X
1, X
2and Y
2be C separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 4;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and,
The consumption of described heatproof component and nonionogenic tenside makes, and with the gross weight of described oil-displacing agent composition for benchmark, the consumption of described heatproof component is 5-90 % by weight; The consumption of described nonionogenic tenside is 10-95 % by weight.
The explanation of each group in described heatproof component, preferable case; The kind of described tensio-active agent and preferable case; In oil-displacing agent composition the consumption etc. of heatproof component and tensio-active agent all with describe identical above, do not repeat at this.
In one embodiment, the method comprises even for the mixing of materials of moisture, heatproof component and nonionogenic tenside, and the consumption of described heatproof component, nonionogenic tenside and water makes, with the gross weight of described oil-displacing agent composition for benchmark, the consumption of described heatproof component is 5-85 % by weight; The consumption of described nonionogenic tenside is 10-90 % by weight, and the consumption of described water is 3-5 % by weight.
The order by merging of the present invention to water, heatproof component and nonionogenic tenside is not particularly limited, and can mix with various order.Mixing condition can various oil-displacing agent composition is not caused to the condition of disadvantageous effect under carry out, such as, can mix at ambient temperature.
To the mixing temperature of heatproof component and nonionogenic tenside and mixing time, there is no particular limitation in the present invention, as long as make to mix between component, in the preferred case, described mixing temperature is 10-40 DEG C, is preferably 20-30 DEG C; Described mixing time is 60-150min, is preferably 90-120min.
The present invention also provides a kind of oil-displacing agent composition obtained by aforesaid method.
In order to understand the present invention better, set forth content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Unless stated otherwise, in experimental example of the present invention, preparation example, embodiment and comparative example, agents useful for same all can be commercially available.Described part is weight part.
In following examples, thick oil viscosity measures according to the method that specifies in GB12005.1-89, by following formulae discovery viscosity break ratio:
Viscosity break ratio (%)=(viscosity of thickened oil after viscous crude initial viscosity-add oil-displacing agent composition solution process)/viscous crude initial viscosity × 100%.
Initial pyrolyzation temperature adopts gravitational thermal analysis method, and test condition is: be 10 DEG C/min at nitrogen protection, rate of warming, measure under 20 DEG C to 600 DEG C temperature range conditions, read heat decomposition temperature by test gained thermal gravimetric analysis curve.
Heat resistance is analyzed: the oil-displacing agent composition solution of 3 % by weight is placed in 300 DEG C of autoclave thermal treatments after 3 hours with high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 1500mg/L) be diluted to 1 % by weight, add 1 % by weight oil-displacing agent solution after 40g dilution toward 100g Shengli Oil Field viscous crude, whether emulsifiedly observe viscous crude after stirring.
Embodiment 1
The present embodiment is for illustration of oil-displacing agent composition provided by the invention.
To 5 parts of dinonylnaphthalene sulfonic acids (CAS NO:
25322-17-2) in add 95 parts of polyoxyethylene octylphenol ethers (Zibo Hai Jie Chemical Co., Ltd. produce, OP-10), at 25 DEG C, be uniformly mixed 10min, obtain oil-displacing agent composition Q1.
Comparative example 1
Replace the oil-displacing agent composition Q1 described in embodiment 1 with commercially available nonionogenic tenside polyoxyethylene octylphenol ether (Zibo Hai Jie Chemical Co., Ltd. produces, OP-10), obtain oil-displacing agent DQ1.
Embodiment 2
In 80 parts of heatproof component 4-octadecylphenol, add 20 parts of Sorbitan polyoxyethylenated alcohol (Zibo Hai Jie Chemical Co., Ltd., tween 80), at 25 DEG C, be uniformly mixed 10min, obtain oil-displacing agent composition Q2.
Comparative example 2
Replace the oil-displacing agent composition Q2 of embodiment 2 with commercially available nonionogenic tenside Sorbitan polyoxyethylenated alcohol (Zibo Hai Jie Chemical Co., Ltd., tween 80), obtain oil-displacing agent DQ2.
Embodiment 3
In 50 parts of heatproof component 4-octyl benzoic acid, add 50 parts of polyoxyethylene octadecanols (Zibo Hai Jie Chemical Co., Ltd. paregal O-20), at 25 DEG C, be uniformly mixed 10min, obtain oil-displacing agent composition Q3.
Comparative example 3
Replace oil-displacing agent composition Q3 described in embodiment 3 with commercially available nonionogenic tenside polyoxyethylene octadecanol (Zibo Hai Jie Chemical Co., Ltd., paregal O-20), obtain oil-displacing agent DQ3.
Test case 1
The Q1 high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 1500mg/L) embodiment 1 prepared is made into the oil-displacing agent composition solution that concentration is 3 % by weight, carries out thermogravimetric analysis.
The oil-displacing agent composition of above-mentioned 3 % by weight is carried out initial pyrolyzation temperature analysis.
The oil-displacing agent composition solution of above-mentioned 3 % by weight is placed in 300 DEG C of autoclave thermal treatments after 3 hours with high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 1500mg/L) be diluted to 1 % by weight, in 100g Shengli Oil Field two northern viscous crude (50 DEG C of viscosity are 15470mPa.s) add 42g dilution after 1 % by weight oil-displacing agent solution, to make the viscosity degradation 70-80% of stirring viscous crude after 5 minutes at 50 DEG C, then adopt Hakke VT550 type rotational viscosimeter (100r/m) to test the thick oil viscosity of emulsification, test result is in table 1.
Test comparison example 1
Performance test is carried out according to the method for test case 1, unlike, replace the oil-displacing agent composition Q1 described in embodiment 1 with oil-displacing agent composition DQ1.
Test case 2
The oil-displacing agent composition Q2 high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 1500mg/L) embodiment 2 prepared is made into the oil-displacing agent composition solution that concentration is 3 % by weight, carries out thermogravimetric analysis.
The oil-displacing agent composition solution of above-mentioned 3 % by weight is carried out initial pyrolyzation temperature analysis.
The oil-displacing agent composition solution of above-mentioned 3 % by weight is placed in 300 DEG C of autoclave thermal treatments after 3 hours with high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 1500mg/L) be diluted to 1 % by weight, 0.5 % by weight oil-displacing agent solution after adding 40g dilution toward 100g Shengli Oil Field Dan Jia temple viscous crude (50 DEG C of viscosity are 9096mPa.s) is with after stirring 5 minutes at making 50 DEG C, the viscosity degradation 70-80% of viscous crude, adopt Hakke VT550 type rotational viscosimeter (100r/m) to test the thick oil viscosity of emulsification, test result is in table 1.
Test comparison example 2
Performance test is carried out according to the method for test case 2, unlike, replace the oil-displacing agent composition Q2 described in embodiment 2 with oil-displacing agent composition DQ2.
Test case 3
The oil-displacing agent composition Q3 high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 20000mg/L) embodiment 3 prepared is made into the oil-displacing agent composition solution that concentration is 3 % by weight, carries out thermogravimetric analysis.
The oil-displacing agent composition solution of above-mentioned 3 % by weight is carried out initial pyrolyzation temperature analysis.
The oil-displacing agent composition solution of above-mentioned 3 % by weight is placed in 300 DEG C of autoclave thermal treatments after 3 hours with high salinity hard water (total mineralization 20000mg/L, wherein calcium ions and magnesium ions concentration is 20000mg/L) be diluted to 1 % by weight, 0.5 % by weight oil-displacing agent solution after 40g dilution is added toward 100g Xinjiang Tahe Heavy Crude (50 DEG C of viscosity are 123220mPa.s), after stirring 5 minutes at making 50 DEG C, the viscosity degradation 70-80% of viscous crude, adopt Hakke VT550 type rotational viscosimeter (100r/m) to test the thick oil viscosity of emulsification, test result is in table 1.
Test comparison example 3
Performance test is carried out according to the method for test case 3, unlike, replace the oil-displacing agent composition Q3 described in embodiment 3 with oil-displacing agent composition DQ3.
Table 1
Data as can be seen from table 1, adopt oil-displacing agent composition provided by the invention, the heat decomposition temperature of oil-displacing agent improves, and all has good viscosity reducing effect to common heavy oil, special thick oil and super-viscous oil.
Claims (13)
1. an oil-displacing agent composition, this oil-displacing agent composition contains heatproof component and nonionogenic tenside, it is characterized in that, described heatproof component be selected from the compound with structure shown in formula (1) and formula (2) one or more:
Wherein, X
1, X
2and Y
2be C separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 3;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and,
With the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-90 % by weight, and the content of described nonionogenic tenside is 10-95 % by weight.
2. oil-displacing agent composition according to claim 1, wherein, with the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-80 % by weight, and the content of described nonionogenic tenside is 20-95 % by weight.
3. oil-displacing agent composition according to claim 1, wherein, X
1, X
2and Y
2be C separately
7-C
19alkylidene group;
R
1and R
2be optionally by C separately
1-C
2the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-3, and the C on described phenylene or condensed ring radical
1-C
2alkyl number be no more than 1.
4. oil-displacing agent composition according to claim 1, wherein, described heatproof component is one or more in 4-octadecylphenol, dinonylnaphthalene sulfonic acid and 4-octyl benzoic acid.
5. oil-displacing agent composition according to claim 1, wherein, this oil-displacing agent composition is also containing water, and with the gross weight of described oil-displacing agent composition for benchmark, the content of described heatproof component is 5-85 % by weight, the content of described nonionogenic tenside is 10-90 % by weight, and the content of described water is 3-5 % by weight.
6. according to the oil-displacing agent composition in claim 1-5 described in any one, wherein, described nonionogenic tenside is selected from one or more in fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, Sorbitan polyoxyethylenated alcohol, polyoxyethylene carboxylate, sorbitan ester and polyoxyethylate amide.
7. the preparation method of an oil-displacing agent composition, the method comprises even for the mixing of materials containing heatproof component and nonionogenic tenside, it is characterized in that, described heatproof component be selected from the compound with the structure shown in formula (1) and formula (2) one or more:
Wherein, X
1, X
2and Y
2the C being separately
4-C
24alkylidene group;
R
1and R
2be optionally by C separately
1-C
3the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-4, and the C on described phenylene or condensed ring radical
1-C
3alkyl number be no more than 3;
Z
1and Z
2be selected from the one in carboxyl, hydroxyl, amido and sulfonic group independently of one another, and,
The consumption of described heatproof component and nonionogenic tenside makes, and with the gross weight of described oil-displacing agent composition for benchmark, the consumption of described heatproof component is 5-90 % by weight, and the consumption of described nonionogenic tenside is 10-95 % by weight.
8. method according to claim 7, wherein, the consumption of described heatproof component and nonionogenic tenside makes, with the gross weight of described oil-displacing agent composition for benchmark, the consumption of described heatproof component is 5-80 % by weight, and the consumption of described nonionogenic tenside is 20-95 % by weight.
9. method according to claim 7, wherein, X
1, X
2and Y
2be C separately
7-C
19alkylidene group;
R
1and R
2be optionally by C separately
1-C
2the phenylene that replaces of alkyl or condensed ring radical, the phenyl ring number of described condensed ring radical is 2-3, and the C on described phenylene or condensed ring radical
1-C
2alkyl number be no more than 1.
10. method according to claim 7, wherein, described heatproof component is one or more in 4-octadecylphenol, dinonylnaphthalene sulfonic acid and 4-octyl benzoic acid.
11. methods according to any one of claims of claim 7-10, wherein, described nonionogenic tenside is selected from one or more in alkylphenol polyoxyethylene, fatty alcohol-polyoxyethylene ether, Sorbitan polyoxyethylenated alcohol, polyoxyethylene carboxylate, sorbitan ester and polyoxyethylate amide.
12. methods according to claim 7, wherein, the temperature of described mixing is 10-40 DEG C, and the time of described mixing is 60-150min.
The oil-displacing agent composition that method in 13. claim 7-12 described in any one is obtained.
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