CN106590575A - Temperature-resistant salt-resistant low-tension foaming agent composition as well as preparation method and application thereof - Google Patents
Temperature-resistant salt-resistant low-tension foaming agent composition as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to a temperature-resistant salt-resistant low-tension foaming agent composition as well as a preparation method and an application thereof to mainly solve the problems that an existing foaming agent can only reduce limited oil/water interfacial tension and cannot clean residual oil of an oil reservoir under a high-temperature high-salt stratum, and a low-tension surfactant is relatively poor in foam property and cannot form stable blockage easily. By adopting the technical scheme that the temperature-resistant salt-resistant low-tension foaming agent composition comprises alkyl glycoside and a polyether anionic surfactant, and the mole ratio of the alkyl glycoside to the polyether anionic surfactant is (0.1-50):1, the problems are well solved, and the temperature-resistant salt-resistant low-tension foaming agent composition can be applied to enhanced oil recovery. The formula I is shown in the description, and a formula II is [R1-O-(C2H4O)a-(C3H6O)b-(C2H4O)c-R2Y].jM.
Description
Technical field
The present invention relates to a kind of temperature-resistant anti-salt low-tension foaming agent combination and preparation method and application.
Background technology
At present, China's main oilfield comes into high water-cut stage, how to improve oil recovery factor, to greatest extent
Ground exploitation remaining reserves, tertiary oil recovery technology have played very important work in terms of oilfield stable production high yield is ensured
With.In tertiary oil recovery new technique, chemical combined flooding remains one of very promising method of tool.
Its mechanism of oil displacement is mainly polymer or glue increases the viscosity of driven water-replacing, reduces oil and water mobility ratio, alleviates channelling
Phenomenon, improves sweep efficiency；Surfactant and alkali reduce oil/water interfacial tension, increase capillary number, promote
Crude oil is desorbed from rock and effectively disperses, and realizes the effective driving to residual oil, so as to improve recovery ratio.
But the polymer in chemical combined flooding is mostly dry powder, offset plate, therefore its dissolubility is very bad, and is polymerized
The heat and salt resistance of thing is poor, and alkali even more can bring huge injury to stratum and oil well.
Foam flooding is of increased attention with its unique seepage flow and the displacement of reservoir oil.Foam is with than polymerization
Thing or glue are preferably entered and reduce the infiltrative ability of high permeability zone.By adding foam and gas mixing,
Displacement is carried out in the form of aerated fluid, high permeability zone can be selectively blocked, fluid entry profile is adjusted, is increased
Big sweep efficiency.Wherein, low-tension foam flooding can not only reduce oil/water interfacial tension, by the residual oil of oil reservoir
Clean up, while and the ability with foam blocking.However, even so, the core of low-tension foam flooding
Heart problem is that possess ultralow interfacial tension, and foaming properties are good, good with stratum compatibility, the resistance to high mineralization of high temperature resistant
Degree.
At present, low-tension foam flooding also gradually starts studied.As patent CN103642481A provides one
Heat-resistant salt-resistant type low interfacial tension foam flooding oil preparation is planted, the agent includes zwitterionic surfactant, nonionic
Surfactant, foam stabilizer and mineralized water, its heat resistance be not good, is only applicable to less than 85 DEG C of oil reservoir,
And which is general with the compatibility of stratum water, the salinity being resistant to is only 30000mg/L, is not suitable for superelevation salt
Oil reservoir.For another example patent CN103937481A discloses a kind of high temperature resistant low-tension foam, and the agent is by alkyl
Phenol polyethenoxy ether salt, mersolates and Sodium Chloride composition, although can 120 DEG C of heatproof, but only
Suitable for salinity less than the oil reservoir under the conditions of 10000mg/L.
The content of the invention
One of the technical problem to be solved is that existing foam reduces oil under high temperature and high salt stratum
/ water interfacial tension is limited, it is impossible to clean up the residual oil of oil reservoir, and the foam of low-tension surfactant
Poor-performing, it is difficult to form the problem of stable closure.The foam is while with low interfacial tension and well
Foaming properties advantage.
Temperature-resistant anti-salt low of the two of the technical problem to be solved for one of solution above-mentioned technical problem
The preparation method of power foaming agent combination.
Temperature-resistant anti-salt low of the three of the technical problem to be solved for one of solution above-mentioned technical problem
Application of the power foaming agent combination in the displacement of reservoir oil of oil field.
To solve one of above-mentioned technical problem, the technical solution used in the present invention is as follows：A kind of temperature-resistant anti-salt is low
Tension force foaming agent combination, including alkyl polyglucoside, polyethers anion surfactant；Described alkyl polyglucoside
Mol ratio with polyethers anion surfactant is 0.1～50:1.
In above-mentioned technical proposal, the general molecular formula of the alkyl polyglucoside is preferably：
Wherein, R ' is C8～C14Alkyl in any one；N is 1～5 Arbitrary Digit.
In above-mentioned technical proposal, the n is preferably 1～3 Arbitrary Digit, more preferably 1～2 Arbitrary Digit.
In above-mentioned technical proposal, the general molecular formula of the polyethers anion surfactant is preferably：
[R1-O-(C2H4O)a-(C3H6O)b-(C2H4O)c-R2Y] jM, formula (II)；
Wherein R1Selected from C1～C20Aliphatic group, any one in aryl, a=0～30, b=0～30,
C=1～30；R2For (CH2)m, m is CH2Number, span is the arbitrary integer in 1～5；Y is
The anionic group of monovalence, to make the general molecular formula in electroneutral cation, j is M valence state values to M
It is reciprocal.
In above-mentioned technical side, when M valence states are preferably+1 valency, the polyethers anion surfactant
Shown in general molecular formula such as formula (III)：
R1-O-(C2H4O)a-(C3H6O)b-(C2H4O)c-R2YM, formula (III).
In above-mentioned technical proposal, the R1It preferably is selected from C8～C16Aliphatic group, any one in aryl.
In above-mentioned technical proposal, preferred a=0～5, b=3～12, c=3～12.
In above-mentioned technical side, the R2Preferably CH2CH2Or CH2CH2CH2；More preferably CH2CH2。
In above-mentioned technical side, the Y is preferably from-COO—、-SO3 —、-HPO4 —In at least one,
More preferably sulfonate radical or carboxylate radical；M is preferably alkali metal ion or ammonium ion is more preferably
At least one of K, Na, ammonium.
In above-mentioned technical side, the alkyl polyglucoside is preferably with the mol ratio of polyethers anion surfactant
0.2～10:1.
To solve the two of above-mentioned technical problem, the technical solution used in the present invention is as follows：A kind of temperature-resistant anti-salt is low
The preparation method of tension force foaming agent combination, comprises the following steps：By alkyl polyglucoside, polyethers anionic surface
Activating agent is uniform according to required mixed in molar ratio, obtains the temperature-resistant anti-salt low-tension foaming agent combination.
In above-mentioned technical proposal, the alkyl polyglucoside, the mode of polyethers anion surfactant mix homogeneously,
Those skilled in the art arbitrarily can select, and such as alkyl polyglucoside, polyethers anion surfactant directly mix
Uniformly, or by alkyl polyglucoside, polyethers anion surfactant mix homogeneously with water, preferably by alkyl sugar
Glycosides, polyethers anion surfactant are dissolved in water mix homogeneously according to required mol ratio；The water it is excellent
Total salinity is elected as 50000～200000mg/L, wherein 2000～5000mg/L of calcium ions and magnesium ions.
To solve the three of above-mentioned technical problem, the technical solution used in the present invention is as follows：A kind of temperature-resistant anti-salt is low
Application of the tension force foaming agent combination in the displacement of reservoir oil of oil field.
In above-mentioned technical proposal, the application can be foam flooding or foam blocking, those skilled in the art
Can be used according to correlation technique of the prior art, the temperature for being preferably suitable for oil reservoir is 60-150 DEG C.
Alkyl polyglucoside in the temperature-resistant anti-salt low-tension foaming agent combination of the present invention is a kind of new nonionic
Surfactant, foaming properties are excellent, and compatibility is strong, and salt-resistance is strong, and without cloud point, with conventional nonionic
Surfactant is compared, and increased heat resistance.Meanwhile, in polyethers anion surfactant containing it is non-from
Sub-piece, increased salt resistant character, and can form ultralow interfacial tension with crude oil, form multiple after both mixing
With synergism, while foaming properties are ensured, it is down to interfacial tension again lower.
The temperature-resistant anti-salt low-tension foaming agent combination of the present invention can form 10 with in-place oil-2-10-3mN/m
Ultralow interfacial tension, foaming capacity is strong, and foam stability is good, is applied to foam blocking test, resistance because
Son is more than 20, achieves preferable technique effect.
Below by embodiment, the present invention is further elaborated.
Specific embodiment
【Embodiment 1】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 2:1 is dissolved in salinity is
During 50000mg/L, wherein calcium ions and magnesium ions content are for the water of 2000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.5%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 3:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 100 DEG C, be 30cm in length, a diameter of 3.8cm, permeability is
Filling out for 300mD carry out in sand tube foam blocking ability determination experiment.First with the speed injection water of 1mL/min,
Record entry and outlet pressures difference △ P1, then foam flooding compositionss, record entry are injected with identical speed
△ P poor with outlet pressures2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 2】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 0.5:1 is dissolved in salinity is
During 50000mg/L, wherein calcium ions and magnesium ions content are for the water of 3000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.3%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 5:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 120 DEG C, be 30cm in length, a diameter of 3.8cm, permeability is
Filling out for 300mD carry out in sand tube foam blocking ability determination experiment.First with the speed injection water of 1mL/min,
Record entry and outlet pressures difference △ P1, then foam flooding compositionss, record entry are injected with identical speed
△ P poor with outlet pressures2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 3】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 1:1 is dissolved in salinity is
During 100000mg/L, wherein calcium ions and magnesium ions content are for the water of 4000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.2%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 7:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 4】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 3:1 is dissolved in salinity is
During 150000mg/L, wherein calcium ions and magnesium ions content are for the water of 5000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.1%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 4:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 150 DEG C, be 30cm in length, a diameter of 3.8cm, permeability is
Filling out for 300mD carry out in sand tube foam blocking ability determination experiment.First with the speed injection water of 1mL/min,
Record entry and outlet pressures difference △ P1, then foam flooding compositionss, record entry are injected with identical speed
△ P poor with outlet pressures2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 5】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 5:1 is dissolved in salinity is
During 150000mg/L, wherein calcium ions and magnesium ions content are for the water of 3000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.3%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 0.5:1 realizes gas-liquid
Mixing, obtains temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 80 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 6】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 0.2:1 is dissolved in salinity is
During 200000mg/L, wherein calcium ions and magnesium ions content are for the water of 4000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.1%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 8:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 70 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 7】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 10:1 is dissolved in salinity is
During 100000mg/L, wherein calcium ions and magnesium ions content are for the water of 3000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.2%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 2:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 80 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 8】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 8:1 is dissolved in salinity is
During 120000mg/L, wherein calcium ions and magnesium ions content are for the water of 3000mg/L, with alkyl polyglucoside, polyethers it is cloudy from
The total quality meter of sub- surfactant, mass fraction is 0.4%, and mix homogeneously forms foam aqueous solution, i.e.,
Obtain the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 2:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 70 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 9】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 6:1 is dissolved in salinity is
During 80000mg/L, wherein calcium ions and magnesium ions content are for the water of 2000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.3%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 3:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 100 DEG C, be 30cm in length, a diameter of 3.8cm, permeability is
Filling out for 300mD carry out in sand tube foam blocking ability determination experiment.First with the speed injection water of 1mL/min,
Record entry and outlet pressures difference △ P1, then foam flooding compositionss, record entry are injected with identical speed
△ P poor with outlet pressures2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 10】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 4:1 is dissolved in salinity is
During 80000mg/L, wherein calcium ions and magnesium ions content are for the water of 2000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.1%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 3:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 70 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
【Embodiment 11】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 1:1 is dissolved in salinity is
During 100000mg/L, wherein calcium ions and magnesium ions content are for the water of 4000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.2%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 7:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/△P1As resistance factor, the results are shown in Table shown in 1.
As shown in Table 1,【Embodiment 1-11】The temperature-resistant anti-salt low-tension foaming agent combination of preparation has good
Foam blocking performance.
【Comparative example 1】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 1:1 is dissolved in salinity is
During 100000mg/L, wherein calcium ions and magnesium ions content are for the water of 4000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.2%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 7:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/ △ P1 are resistance factor, the results are shown in Table shown in 1.
【Comparative example 2】
By alkyl polyglucoside, polyethers anion surfactant according to mol ratio 1:1 is dissolved in salinity is
During 100000mg/L, wherein calcium ions and magnesium ions content are for the water of 4000mg/L, with alkyl polyglucoside, polyethers anion
The total quality meter of surfactant, mass fraction is 0.2%, and mix homogeneously forms foam aqueous solution, obtains final product
To the temperature-resistant anti-salt low-tension foaming agent combination.
By the temperature-resistant anti-salt low-tension foaming agent combination for obtaining with nitrogen according to volume ratio 7:1 realizes that gas-liquid is mixed
Close, obtain temperature-resistant anti-salt low-tension foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/ △ P1 are resistance factor, the results are shown in Table shown in 1.
【Comparative example 3】
Salinity is dissolved in for 100000mg/L using alkyl polyglucoside as foam, wherein calcium ions and magnesium ions content is
In the water of 4000mg/L, in terms of the total quality of alkyl polyglucoside, mass fraction is 0.2%, and mix homogeneously forms bubble
Foam agent aqueous solution, then with nitrogen according to volume ratio 7:1 realizes gas-liquid mixed, obtains foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/ △ P1 are resistance factor, the results are shown in Table shown in 1.
【Comparative example 4】
Salinity is dissolved in for 100000mg/L, wherein calcium using polyethers anion surfactant as foam
During magnesium ion content is for the water of 4000mg/L, in terms of the total quality of polyethers anion surfactant, quality point
Number is 0.2%, and mix homogeneously forms foam aqueous solution, then with nitrogen according to volume ratio 7:1 realizes gas-liquid
Mixing, obtains foam flooding compositionss.
Above-mentioned composition is taken under the conditions of 60 DEG C, is 30cm in length, a diameter of 3.8cm, permeability are 300mD
Fill out.First with the speed injection water of 1mL/min, it is recorded into
Mouth and outlet pressures difference △ P1, then foam flooding compositionss, record entry and outlet are injected with identical speed
End pressure difference △ P2, △ P2/ △ P1 are resistance factor, the results are shown in Table shown in 1.
【Embodiment 13】Temperature-resistant anti-salt low-tension foaming agent combination interface performance is tested
Determined with TX-500C rotating interfacial tensimeters【Embodiment 1-11】The heat-resistant salt-resistant low-tension of preparation
Foaming agent combination and Zhongyuan Oil Field oil water interfacial tension and【Comparative example 1-4】The foam aqueous solution of preparation
With Zhongyuan Oil Field oil water interfacial tension.Test temperature is 73 DEG C.The results are shown in Table 2.
As shown in Table 2,【Embodiment 1-11】The heat-resistant salt-resistant low-tension foam aqueous solution of preparation is for Central Plains
Oil field has good interface performance.
Table 1 (continued)
1 (Continued) of table
Table 2 (continued)
| Embodiment | R’ | n | R1 | a | b | c | Y | M | Water salinity mg/L |
| 1 | C8H17 | 1.6 | C8H17 | 4 | 5 | 10 | COO- | Na | 50000 |
| 2 | C8H17 | 1.2 | C8H17C6H4 | 2 | 10 | 8 | SO3 - | Na | 50000 |
| 3 | C10H21 | 1.5 | C12H25 | 0 | 8 | 4 | SO3 - | Na | 100000 |
| 4 | C12H25 | 1.8 | C10H21 | 5 | 6 | 6 | SO3 - | Na | 150000 |
| 5 | C12H25 | 2 | C10H21C6H4 | 3 | 3 | 12 | COO- | K | 150000 |
| 6 | C14H29 | 2 | C14H29 | 1 | 12 | 3 | COO- | NH4 | 200000 |
| 7 | C8H17 | 2 | C12H25 | 4 | 7 | 9 | COO- | Na | 100000 |
| 8 | C10H21 | 1.8 | C12H25 | 3 | 4 | 5 | COO- | K | 120000 |
| 9 | C10H21 | 1.2 | C10H21C6H4 | 4 | 9 | 7 | SO3 - | NH4 | 80000 |
| 10 | C12H25 | 1 | C12H25 | 2 | 5 | 5 | SO3 - | Na | 80000 |
| 11 | C10H21 | 1.5 | C12H25 | 1 | 8 | 3 | SO3 - | Na | 100000 |
| Comparative example 1 | C10H21 | 1.5 | C12H25 | 4 | 8 | 0 | SO3 - | Na | 100000 |
| Comparative example 2 | C10H21 | 1.5 | C12H25 | 0 | 0.36 | 0 | SO3 - | Na | 100000 |
| Comparative example 3 | C10H21 | 1.5 | - | - | - | - | - | Na | 100000 |
| Comparative example 4 | - | - | C12H25 | 0 | 8 | 4 | SO3 - | Na | 100000 |
2 (Continued) of table
| Embodiment | Ca2+、Mg2+Content mg/L | Alkyl polyglucoside and polyethers salt mol ratio | Foam total concentration wt% | Interfacial tension mN/m |
| 1 | 2000 | 2:1 | 0.5 | 0.078 |
| 2 | 3000 | 0.5:1 | 0.3 | 0.057 |
| 3 | 4000 | 1:1 | 0.2 | 0.021 |
| 4 | 5000 | 3:1 | 0.1 | 0.011 |
| 5 | 3000 | 5:1 | 0.3 | 0.009 |
| 6 | 4000 | 0.2:1 | 0.1 | 0.003 |
| 7 | 3000 | 10:1 | 0.2 | 0.033 |
| 8 | 3000 | 8:1 | 0.4 | 0.007 |
| 9 | 2000 | 6:1 | 0.3 | 0.005 |
| 10 | 2000 | 4:1 | 0.1 | 0.008 |
| 11 | 4000 | 1:1 | 0.2 | 0.019 |
| Comparative example 1 | 4000 | 1:1 | 0.2 | 0.075 |
| Comparative example 2 | 4000 | 1:1 | 0.2 | 0.092 |
| Comparative example 3 | 4000 | - | 0.2 | 0.458 |
| Comparative example 4 | 4000 | 1:1 | 0.2 | 0.201 |
Claims (10)
1. a kind of temperature-resistant anti-salt low-tension foaming agent combination, including alkyl polyglucoside, polyethers anionic surface are lived
Property agent；Described alkyl polyglucoside is 0.1～50 with the mol ratio of polyethers anion surfactant:1.
2. temperature-resistant anti-salt low-tension foaming agent combination according to claim 1, it is characterised in that the alkane
Shown in the general molecular formula of base glucosides such as formula (I)：
Wherein, R ' is C8～C14Alkyl in any one；N is 1～5 Arbitrary Digit.
3. temperature-resistant anti-salt low-tension foaming agent combination according to claim 2, it is characterised in that the n
For 1～3 Arbitrary Digit.
4. temperature-resistant anti-salt low-tension foaming agent combination according to claim 1, it is characterised in that described poly-
Shown in the general molecular formula of ether anion surfactant such as formula (II)：
[R1-O-(C2H4O)a-(C3H6O)b-(C2H4O)c-R2Y] jM, formula (II)；
Wherein, R1Selected from C1～C20Aliphatic group, any one in aryl；A=0～30, b=0～30,
C=1～30；R2For (CH2)m, m is CH2Number, span is the arbitrary integer in 1～5；Y is
The anionic group of monovalence, to make the general molecular formula in electroneutral cation, j is falling for M valence state values to M
Number.
5. temperature-resistant anti-salt low-tension foaming agent combination according to claim 4, it is characterised in that the R1
Selected from C8～C16Aliphatic group, any one in aryl；A=0～5, b=3～12, c=3～12.
6. temperature-resistant anti-salt low-tension foaming agent combination according to claim 4, it is characterised in that the Y
For sulfonate radical or carboxylate radical.
7. temperature-resistant anti-salt low-tension foaming agent combination according to claim 4, it is characterised in that the M
For any one in alkali metal ion, ammonium ion.
8. temperature-resistant anti-salt low-tension foaming agent combination according to claim 1, it is characterised in that the alkane
Base glucosides is 0.2～10 with the mol ratio of polyethers anion surfactant:1.
9. the preparation method of the arbitrary temperature-resistant anti-salt low-tension foaming agent combination of claim 1～8, including
Following steps：By alkyl polyglucoside, polyethers anion surfactant according to required mol ratio, mix homogeneously, obtain
To the temperature-resistant anti-salt low-tension foaming agent combination.
10. according to claim 1 temperature-resistant anti-salt low-tension foaming agent combination in the displacement of reservoir oil of oil field should
With.
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Citations (4)
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|---|---|---|---|---|
| CN1733863A (en) * | 2004-08-11 | 2006-02-15 | 中国石油化工股份有限公司 | Low foamability drilling fluid and its preparation method |
| US7279446B2 (en) * | 2004-11-15 | 2007-10-09 | Rhodia Inc. | Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance |
| CN102549105A (en) * | 2009-09-29 | 2012-07-04 | 考格尼斯知识产权管理有限责任公司 | Use of alk(en)yl oligoglycosides in enhanced oil recovery processes |
| CN102559168A (en) * | 2012-01-06 | 2012-07-11 | 中国石油大学(华东) | Acid-sensitive variable-viscosity mixed surfactant |
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2015
- 2015-10-20 CN CN201510683590.7A patent/CN106590575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733863A (en) * | 2004-08-11 | 2006-02-15 | 中国石油化工股份有限公司 | Low foamability drilling fluid and its preparation method |
| US7279446B2 (en) * | 2004-11-15 | 2007-10-09 | Rhodia Inc. | Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance |
| CN102549105A (en) * | 2009-09-29 | 2012-07-04 | 考格尼斯知识产权管理有限责任公司 | Use of alk(en)yl oligoglycosides in enhanced oil recovery processes |
| CN102559168A (en) * | 2012-01-06 | 2012-07-11 | 中国石油大学(华东) | Acid-sensitive variable-viscosity mixed surfactant |
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