CN113913172B - Oil-resistant foam liquid drainage agent composition, foam liquid drainage agent composition liquid and application thereof - Google Patents
Oil-resistant foam liquid drainage agent composition, foam liquid drainage agent composition liquid and application thereof Download PDFInfo
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- CN113913172B CN113913172B CN202010661883.6A CN202010661883A CN113913172B CN 113913172 B CN113913172 B CN 113913172B CN 202010661883 A CN202010661883 A CN 202010661883A CN 113913172 B CN113913172 B CN 113913172B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
- C09K8/604—Polymeric surfactants
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Abstract
The invention relates to the field of foam drainage gas production, in particular to an oil-resistant foam drainage agent composition, a foam drainage agent composition liquid and application thereof. The foam drainage agent composition contains hydrocarbyl amido betaine with a structure shown in a formula (I), polyether quaternary ammonium salt with a structure shown in a formula (II) and sulfonate anionic surfactant, and has excellent foam oil resistance, thermal stability, foamability and liquid carrying property, so that the foam drainage agent composition has excellent foam drainage performance when being applied. Meanwhile, the foam liquid drainage agent combination liquid disclosed by the invention is applied to the liquid drainage and gas production process of a gas well, has excellent oil resistance, thermal stability, foamability and liquid carrying property, and can ensure the smooth gas production of the gas well.
Description
Technical Field
The invention relates to the field of foam drainage gas production, in particular to an oil-resistant foam drainage agent composition, a foam drainage agent composition liquid and application thereof.
Background
With the enhancement of exploitation strength of the gas field, the liquid output of the gas field becomes a key problem restricting the normal production of the gas well. The foam liquid drainage gas production technology is a liquid drainage gas production technology which is rapidly developed at home and abroad in recent years, and has the advantages of simple equipment, convenience in construction, low cost, wide applicable well depth range, no influence on normal production of gas wells and the like.
The development of the foam drainage agent since the sixties of the last century is carried out abroad, and surfactants such as sulfonate, benzene sulfonate, alkylphenol polyoxyethylene ether and the like are mostly selected. At present, the foam drainage agent for drainage and gas production mostly adopts a multi-component compound system, and in order to enhance the stability of single foam, auxiliaries such as alkali, alcohol, polymer, alkanolamide and the like are usually added into the formula to form reinforced foam. US20120279715 reports a foam fluid for increasing oil yield of recovered gas in a gas well, which is a quaternary ammonium salt surfactant with foam discharging and sterilizing functions, a hydrophobic chain is a hydrophobic segment in substituted naphthalene ring, benzene ring or natural oil ester, and has strong chlorine resistance and condensate oil resistance, 20% of condensate oil content is reduced from 86.8% to 51% and 50% of condensate oil content is reduced to 29% under the condition that the nitrogen injection speed is 7L/min.
At present, most reported foam systems with oil resistance are fluorocarbon surfactants, and because hydrogen atoms in a hydrophobic chain of the fluorocarbon surfactants are replaced by fluorine atoms, the hydrophobic chain of the fluorocarbon surfactants is hydrophobic and oleophobic, so that the oil resistance of the foam is improved. However, fluorocarbon surfactants are expensive to produce, have poor biocompatibility, and may pose a series of environmental and safety problems for large-scale application.
Disclosure of Invention
The invention aims to overcome the defects of poor foam liquid discharging performance, production reduction of liquid accumulation at the bottom of a well and gas well and even spray stoppage due to insufficient foam oil resistance and temperature resistance of the existing foam liquid discharging agent in the gas well development process in the prior art, and provides a foam liquid discharging agent composition, a foam liquid discharging agent composition and application thereof.
In order to achieve the above object, a first aspect of the present invention provides a foam drainage composition comprising: hydrocarbyl amido betaines, polyether quaternary ammonium salts, and sulfonate anionic surfactants;
the alkyl amido betaine has a structure shown in a formula (I),
in the formula (I), R 1 Is a C10-C26 aliphatic hydrocarbon group; r 2 Is C1-C5 alkylene; r 3 And R 4 Each independently selected from the group consisting of H, C1-C5 hydrocarbyl and C1-C5 alkoxy; r is 5 Is a substituted or unsubstituted C1-C5 alkylene group or is- (CH) 2 ) n -O-, wherein n is an integer from 1 to 5;
m is any number from 1 to 3; x is selected from anionic groups which render the molecule of formula (I) electrically neutral;
the polyether quaternary ammonium salt has a structure shown in a formula (II),
in the formula (II), R 1 A group selected from the group consisting of C10-C26 aliphatic hydrocarbon groups, C10-C26 aryl groups, and C11-C30 aryl groups substituted with C1-C4 hydrocarbon groups; y is any number from 0 to 20; z is any number from 0 to 60; r 4 、R 5 、R 6 Each independently selected from the group consisting of H, C1-C5 substituted or unsubstituted hydrocarbyl and C1-C5 alkoxy; r 7 Selected from substituted or unsubstituted C1-C5 alkylene; y is selected from anionic groups which render the molecule of formula (II) electrically neutral; j is the valence of Y, and 1/j is the number of Y.
In a second aspect, the present invention provides a foam drainage agent composition, which comprises the foam drainage agent composition and water.
The third aspect of the invention provides an application of the foam drainage agent combination liquid in drainage and gas production of a gas well.
Compared with the prior art, the foam drainage agent composition provided by the invention contains the hydrocarbyl amido betaine with the structure shown in the formula (I), the polyether quaternary ammonium salt with the structure shown in the formula (II) and the sulfonate anionic surfactant, wherein the hydrocarbyl amido betaine and the polyether quaternary ammonium salt with multiple hydrophilic functional groups can effectively improve the hydrophilicity of the foam drainage agent composition, improve the foam liquid carrying capacity, facilitate foam drainage, reduce the lipophilicity, increase the oil-water interfacial tension and improve the oil resistance of the foam drainage agent composition; the polyether quaternary ammonium salt and the sulfonate anionic surfactant interact with each other through anions and cations, effectively increasing the adsorption capacity and reducing the surface tension of gas and liquid, so that the foam is easier to generate. Meanwhile, under the preferable condition, the addition of the alcohol ether, especially the addition of the short-chain alcohol ether, is more beneficial to reducing the viscosity of the system, so that the gas flow resistance of the gas well is reduced. The foam liquid drainage agent combined liquid is applied to the liquid drainage and gas production process of a gas well, has excellent oil resistance, thermal stability, foamability and liquid carrying property, and can ensure the smooth gas production of the gas well.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The present invention provides in a first aspect a foam drainage composition comprising: hydrocarbyl amido betaines, polyether quaternary ammonium salts, and sulfonate anionic surfactants;
the alkyl amido betaine has a structure shown in a formula (I),
in the formula (I), R 1 Is a C10-C26 aliphatic hydrocarbon group; r 2 Is C1-C5 alkylene; r 3 And R 4 Each independently selected from the group consisting of H, C1-C5 hydrocarbyl and C1-C5 alkoxy; r 5 Is a substituted or unsubstituted C1-C5 alkylene group or is- (CH) 2 ) n -O-, wherein n is an integer from 1 to 5;
m is any number from 1 to 3; x is selected from anionic groups which render the molecule of formula (I) electrically neutral;
the polyether quaternary ammonium salt has a structure shown in a formula (II),
in the formula (II), R 1 A group selected from the group consisting of C10-C26 aliphatic hydrocarbon groups, C10-C26 aryl groups, and C11-C30 aryl groups substituted with C1-C4 hydrocarbon groups; y is any number from 0 to 20; z is any number from 0 to 60; r 4 、R 5 、R 6 Each independently selected from the group consisting of H, C1-C5 substituted or unsubstituted hydrocarbyl and C1-C5 alkoxy; r 7 Selected from substituted or unsubstituted C1-C5 alkylene; y is selected from anionic groups which render the molecule of formula (II) electrically neutral; j is the valence of Y, and 1/j is the number of Y.
The C10-C26 aliphatic hydrocarbon group is an aliphatic hydrocarbon group having 10-26 carbon atoms in total, and may be, for example, C 10 、C 11 、C 12 、C 13 、C 14 、C 15 、C 16 、C 17 、C 18 、C 19 、C 20 、C 21 、C 21 、C 23 、C 24 、C 25 Or C 26 The aliphatic hydrocarbon group of (2). For example, the C10-C26 aliphatic hydrocarbon group may be a C10-C26 alkyl group or a C10-C26 alkenyl group.
The C1-C5 alkylene group means an alkylene group having 1 to 5 carbon atoms in total, and may be, for example, C 1 、C 2 、C 3 、C 4 Or C 5 An alkylene group of (a).
The hydrocarbon group of C1 to C5 means a hydrocarbon group having 1 to 5 carbon atoms in total, and may be, for example, C 1 、C 2 、C 3 、C 4 Or C 5 The hydrocarbyl radical of (2) may be, for example, C 1-5 Alkyl or C 2-5 Alkenyl groups of (a).
The alkoxy group having 1 to 5 carbon atoms in total is an alkoxy group having 1 to 5 carbon atoms in total, and may be, for example, C 1 、C 2 、C 3 、C 4 Or C 5 Alkoxy group of (2).
The C10-C26 aryl refers to aryl with the total number of carbon atoms of 10-26.
The C11-C30 aryl substituted by C1-C4 alkyl refers to aryl with the total number of carbon atoms of 11-30, and at least one H on the aryl is substituted by C1-C4 alkyl.
In order to better exert the effect of the hydrocarbyl amido betaine, polyether quaternary ammonium salt and sulfonate anionic surfactant on reducing the gas-liquid surface tension, preferably, R 1 Is C10-C20 aliphatic hydrocarbon group. The R is 1 May be a C10-C20 alkyl group or an unsaturated hydrocarbon group. The R is 1 May be a linear aliphatic hydrocarbon group and/or a branched aliphatic hydrocarbon group.
Preferably, R 2 is-C 2 H 4 -or-C 3 H 6 -。
According to the invention, m is any number from 1 to 3, preferably m is an integer from 1 to 3, for example 1, 2 or 3, preferably 2.
Preferably, R 3 And R 4 Each independently selected from the group consisting of H, C1-C5 alkyl and C1-C5 alkoxy, more preferably methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, C 2 H 5 O-and C 3 H 7 O-group.
According to the invention, X is any anionic group which renders the general molecular formula (I) electrically neutral, for example but not limited to X being selected from-COO - 、-SO 3 - and-HPO 4 - Is more preferably-COO - and/or-SO 3 - 。
In the present invention, R 5 Is a substituted or unsubstituted C1-C5 alkylene group or is- (CH) 2 ) n -O-, wherein n is an integer from 1 to 5. Preferably, said R is 5 Is selected from-C 3 H 6 O-、-CH 2 -、-C 2 H 4 -or-C 3 H 6 -。
Preferably, R 1 A group selected from the group consisting of C10-C20 aliphatic hydrocarbon groups, C10-C20 aryl groups, and C11-C24 aryl groups substituted with C1-C4 hydrocarbon groups. Further preferably, R 1 A group selected from the group consisting of a C10-C20 alkyl group and a C11-C24 aryl group substituted with at least one substituent selected from the group consisting of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group and a tert-butyl group. More preferably, R 1 Selected from C10-C20 aliphatic hydrocarbon groups.
According to the invention, y is preferably an arbitrary number from 1 to 10 and z is an arbitrary number from 1 to 10.
According to the invention, when said R is 4 、R 5 、R 6 When a substituent group is present, it may be independently halogen or oxygen. Preferably, R 4 、R 5 、R 6 Each independently selected from methoxy, ethoxy, propoxy, methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl or isopentyl.
According to the invention, preferably R 7 is-C 2 H 4 -or-C 3 H 6 -。
In the above technical solution, Y is not particularly limited, and may be selected from any anion that can make the molecule represented by formula (II) electrically neutral, such as but not limited to, halide ion, sulfate ion, sulfite ion, acetate ion, or polyanion; among these, Y is preferably a halogen ion, and more preferably at least one of a chloride ion and a bromide ion.
In the present invention, in order to improve the foam oil resistance, preferably, the sulfonate anionic surfactant is selected from at least one of alkylsulfonate and fluoroalkylsulfonate, and further preferably, the sulfonate anionic surfactant is selected from at least one of tetradecapentadecyl alpha olefin sulfonate, decylsulfonate, fluorononenoxybenzene sodium sulfonate, dodecylbenzene sodium sulfonate and dodecylpolyoxyethylene ether sodium sulfonate. The preferred sulfonate anionic surfactant is used to further facilitate the interaction of the alkylamidobetaine and the sulfonate anionic surfactant.
The above-mentioned sulfonate anionic surfactants can be obtained commercially or can be prepared by any conventional method.
Preferably, the mass ratio of the alkyl amido betaine to the polyether quaternary ammonium salt to the sulfonate anionic surfactant is 1:0.1-10:0.001-1, preferably 1:0.5-5:0.05-0.5.
Preferably, the composition also contains alcohol ether, wherein the carbon atom number of the alcohol ether is 1-6.
The invention has wide selection range of the types of the alcohol ether, and preferably, the alcohol ether is selected from at least one of methanol, ethanol, isopropanol, ethylene glycol butyl ether and ethylene glycol methyl ether. The specific kind of the alcohol ether is not particularly limited in the present invention as long as it is advantageous to reduce the gas-liquid surface tension, and at least one of ethanol, ethylene glycol butyl ether, and ethylene glycol methyl ether is preferable.
The alcohol ether of the present invention may be commercially available, or may be prepared by a conventional method, and the present invention is not particularly limited thereto.
The content of the alcohol ether is not particularly limited, so long as the performance of the foam liquid discharging agent composition is improved; preferably, the alcohol ether is contained in an amount of 0.01 to 5 parts by weight, preferably 0.1 to 1 part by weight, with respect to 1 part by weight of the alkylamidobetaine.
The foam drainage agent composition provided by the invention contains the hydrocarbyl amido betaine with the structure shown in the formula (I), the polyether quaternary ammonium salt with the structure shown in the formula (II) and the sulfonate anionic surfactant, so that the surface tension of gas and water can be effectively reduced, the foam oil resistance is improved, foam generated by condensate oil is easier, and the liquid is smoothly carried out; under the preferable condition, the addition of the alcohol ether is more favorable for reducing the viscosity of the system, so that the gas flow resistance of the gas well is reduced, and the liquid carrying is more favorable.
In the present invention, there is no particular limitation in the preparation process of the foam drainage composition, as long as the alkylamidobetaine having the structure represented by formula (I), the polyether quaternary ammonium salt having the structure represented by formula (II), the sulfonate anionic surfactant, and optionally the alcohol ether are uniformly mixed.
In the preparation process of the foam drainage agent composition, any two raw materials can be mixed firstly and then mixed with other raw materials, or parts of a certain raw material and other raw materials can be mixed respectively and then finally mixed together.
The state of the foam drainage composition of the present invention is not particularly limited, and may be any state known in the art, for example, for convenience of transportation, storage or field use, the above components may be directly mixed, or the above components may be dissolved in water for use. Preferably, the components are dissolved in water, so that the synergistic effect among different components can be better exerted.
The foam drainage agent composition has good compatibility, and can also contain other treating agents commonly used in the field. The present invention will not be described herein.
In a second aspect, the present invention provides a foam drainage agent composition, which comprises the foam drainage agent composition and water.
According to the present invention, it is preferable that the content of the foam drainage agent composition in the foam drainage agent composition is 0.2 to 2% by weight.
In the present invention, there is a wide range of choices for the kind of water, and preferably, the water may be deionized water or mineral-containing water, wherein the mineral content in the mineral-containing water is preferably 0-100,000mg/L.
Further preferably, the mineral-containing water is selected from at least one of tap water, oil and gas field formations, and hydro oil and gas field injection water.
The state of the foam drainage agent composition liquid is not particularly limited, and the foam drainage agent composition liquid can be any state known in the field, such as a paste form containing water for convenient transportation, storage or field use, and can also be in the form of an aqueous solution, wherein the aqueous solution form is selected from a form of a concentrated liquid prepared by using water and/or a form of a foam drainage agent directly prepared to the concentration required by field oil displacement. In the present invention, a foam drainage agent composition liquid in which a foam drainage agent is dissolved in water is preferable, wherein the water is defined as above.
In the present invention, the preparation process of the foam drainage agent composition is not particularly limited as long as the foam drainage agent composition is uniformly mixed with water, that is, the hydrocarbyl amido betaine having the structure represented by formula (I), the polyether quaternary ammonium salt having the structure represented by formula (II), the sulfonate anionic surfactant, optionally the alcohol ether, and water are uniformly mixed. The mixing can be carried out by mixing any two raw materials and then mixing the two raw materials with other raw materials, or can be carried out by mixing part of a certain raw material with other raw materials respectively and then finally mixing the two raw materials together.
In the preparation process of the foam drainage agent composition liquid, other conditions for mixing are not limited, for example, mixing can be performed under a heating condition, and mixing can also be performed under an ultrasonic condition as long as the uniformity of the foam drainage agent composition liquid is improved. In the production method of the present invention, the mixing is preferably performed at room temperature under normal pressure.
The third aspect of the invention provides the application of the foam drainage agent composition liquid in drainage and gas production of a gas well.
The invention is not particularly limited in the kind of gas well as long as the foam drainage performance of the foam drainage agent composition liquid can be exerted in the application.
In the present invention, the content of condensate oil in the gas well can be selected in a wide range, and more preferably, the content of condensate oil is 0 to 70 vol%.
According to the present invention, the specific conditions for the application of the foam drainage agent composition are not particularly limited, and the application of the foam drainage agent composition may be performed according to the conventional application in the art. The components in the foam drainage agent combination liquid can be added into a gas well independently or after mixing, and preferably after mixing.
In the application, the invention has wider selection range of the dosage of the foam liquid drainage agent combination liquid. Preferably, the foam drainage composition is used in an amount of 0.1 to 2g, more preferably 0.1 to 1g, per 100mL of water and condensate. By adopting the preferred embodiment, the liquid and gas drainage function of the foam liquid drainage agent combination liquid can be effectively exerted, and higher economic benefit is achieved. The preferable scheme of the invention is more beneficial to exerting the foam drainage performance of the foam drainage agent composition liquid.
The present invention will be described in detail below by way of examples. In the following examples, the starting materials were all commercially available products unless otherwise specified.
The condensate oil is from condensate oil produced from a gas field in the west of Sichuan, and is mainly a mixture mainly containing C5 to C10.
The hydrocarbyl amido betaine was prepared according to 201911011301.3.
The polyether quaternary ammonium salt was prepared according to the method disclosed in CN106590604 a.
The room temperature in the invention refers to 25 ℃ without special indication.
The compositional structures of the alkylamidobetaines and the polyether quaternaries of examples 1-11 are shown in Table 1.
Example 1
At normal temperature and normal pressure, the alkyl amido betaine, the polyether quaternary ammonium salt, tetradecyl hexadecyl alpha olefin sodium sulfonate (commercially available from middle light chemical industry Co., ltd., the mark is AOS 1416), methanol and butyl cellosolve are dissolved in an aqueous solution according to the mass ratio of 1.
Example 2
At normal temperature and normal pressure, the alkyl amido betaine, the polyether quaternary ammonium salt, the decyl sodium sulfonate (commercially available from Chinese medicines) and the methanol are dissolved in the water solution according to the mass ratio of 1.
Example 3
At normal temperature and normal pressure, weighing and dissolving alkyl amido betaine, polyether quaternary ammonium salt, fluorononenoxybenzene sodium sulfonate (commercially available from Futian chemical company, and the trademark is OBS), methanol and ethylene glycol monomethyl ether in an aqueous solution according to the mass ratio of 1.
Example 4
At normal temperature and normal pressure, weighing and dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the sodium dodecyl benzene sulfonate, the ethanol and the ethylene glycol monomethyl ether in an aqueous solution according to the mass ratio of 1.05.
Practice of example 5
Weighing alkylamido betaine, polyether quaternary ammonium salt and sodium dodecyl polyoxyethylene ether sulfonate (commercially available from Shell company under normal temperature and pressure, and having a trademark of ENORDET) TM J071 Dissolving isopropanol in water solution according to the mass ratio of 1.1.
Example 6
At normal temperature and normal pressure, dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the sodium dodecyl polyoxyethylene ether sulfonate and the ethylene glycol methyl ether in an aqueous solution according to the mass ratio of 1.
Example 7
At normal temperature and normal pressure, weighing and dissolving the alkyl amido betaine, the polyether quaternary ammonium salt and the sodium dodecyl polyoxyethylene ether sulfonate in an aqueous solution according to the mass ratio of 1.
Example 8
At normal temperature and normal pressure, dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the sodium dodecyl polyoxyethylene ether sulfonate and the ethylene glycol methyl ether in an aqueous solution according to the mass ratio of 1.
Example 9
At normal temperature and normal pressure, weighing and dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the tetradecapentalkyl alpha olefin sodium sulfonate, the methanol and the ethylene glycol monobutyl ether in an aqueous solution according to the mass ratio of 1.
Example 10
At normal temperature and normal pressure, weighing and dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the tetradecapentalkyl alpha olefin sodium sulfonate, the methanol and the ethylene glycol monobutyl ether in an aqueous solution according to the mass ratio of 1.
Example 11
At normal temperature and normal pressure, weighing and dissolving the alkyl amido betaine, the polyether quaternary ammonium salt, the tetradecapentalkyl alpha olefin sodium sulfonate, the methanol and the ethylene glycol monobutyl ether in an aqueous solution according to the mass ratio of 1.
Comparative examples 1 to 5
The hydrocarbyl amido betaines and the polyether quaternary ammonium salts with the structures and the proportions defined in the examples 1 to 5 are respectively dissolved in the water solution to prepare 0.5wt% solution, and the foam drainage agent combination liquids DHF-1 to DHF-5 are obtained.
Comparative examples 6 to 10
The polyether quaternary ammonium salt and the sulfonate anionic surfactant with the structures and the proportions defined in the examples 1 to 5 were dissolved in aqueous solutions to prepare 0.5wt% solutions, respectively, to obtain foam drainage agent combination liquids DHF-6 to DHF-10.
Comparative examples 11 to 15
The hydrocarbyl amido betaines and the sulfonate anionic surfactants with the structures and the proportions defined in examples 1 to 5 were dissolved in aqueous solutions respectively to prepare 0.5wt% solutions, to obtain foam drainage agent composition liquids DHF-11 to DHF-15.
Comparative example 16
The foam drainage agent is prepared according to the method disclosed in CN109679618A, dissolved in an aqueous solution to prepare a 0.5wt% solution, and the foam drainage agent combination liquid DHF-16 is obtained.
TABLE 1
| Foam drainage agent combined liquid | R 1 | R 2 | m | R 3 | R 4 | R 5 | X |
| HF-1 | C 16 H 33 | C 2 H 4 | 2 | CH 3 | CH 3 | C 3 H 6 O | SO 3 - |
| HF-2 | C 20 H 41 | C 2 H 4 | 2 | C 2 H 5 | C 2 H 5 | C 2 H 4 | COO - |
| HF-3 | C 10 H 21 | C 3 H 6 | 1 | C 3 H 7 O | C 3 H 7 O | C 3 H 6 | COO - |
| HF-4 | C 12 H 25 | C 2 H 4 | 1 | C 2 H 5 O | C 2 H 5 O | CH 2 | SO 3 - |
| HF-5 | C 16 H 33 | C 2 H 4 | 2 | C 2 H 5 | C 2 H 5 | C 2 H 4 | SO 3 - |
| HF-6 | C 16 H 33 | C 2 H 4 | 2 | CH 3 | CH 3 | C 2 H 4 | SO 3 - |
| HF-7 | C 16 H 33 | C 2 H 4 | 2 | CH 3 | CH 3 | C 2 H 4 | SO 3 - |
| HF-8 | C 16 H 33 | C 2 H 4 | 3 | CH 3 | CH 3 | C 2 H 4 | SO 3 - |
| HF-9 | C 26 H 51 | C 2 H 4 | 3 | CH 3 | CH 3 | C 3 H 6 O | SO 3 - |
| HF-10 | C 16 H 33 | C 2 H 4 | 2 | CH 3 | CH 3 | C 3 H 6 O | SO 3 - |
| HF-11 | C 16 H 33 | C 5 H 10 | 2 | CH 3 | CH 3 | C 3 H 6 O | SO 3 - |
TABLE 1
Test example 1
Foam lather amount and foam stability test: a model 2151 roche foam instrument was used, the experimental temperature being 50 ℃.
Testing the foam liquid carrying amount: 5L/min of nitrogen was continuously introduced into a mixture (200 mL) of the foam drainage agent composition (HF 1-11) prepared in examples 1-11 and condensate at 50 ℃ for 15min, the volume contents of the condensate were 0%,50% and 70%, respectively, and the volume of the liquid carried over was recorded after the blowing.
The foam drainage agent composition liquids prepared in examples 1 to 11 were deionized water with a degree of mineralization of 0, simulated water at 50,000mg/L, and simulated water at 100,000mg/L, respectively.
The foaming power, the foam stability and the foam carrying capacity of the foam liquid discharging agent combined liquid are measured by adopting the method, wherein the deionized water results are shown in the table 2 (condensate oil volume content is 0%,50% and 70%) according to different types of aqueous solutions; the results of simulated water at 50,000mg/L are shown in Table 3 (condensate content 0%,50%, 70%); the results of simulated water at 100,000mg/L are shown in Table 4 (condensate content 0%,50%,70% by volume).
TABLE 2
TABLE 3
TABLE 4
Test example 2
According to the method of test example 1, except that the foam drainage agent compositions were replaced with the foam drainage agent compositions DHF-1 to DHF-5 prepared in comparative examples 1 to 5, respectively.
The foaming power, foam stability and foam carrying capacity of the foam drainage agent composition were measured by a model 2151 roche foam meter, wherein the results are shown in table 5 (0%, 50%,70% by volume of condensate).
TABLE 5
Test example 3
According to the method of test example 1, except that the foam drainage agent compositions were replaced with the foam drainage agent compositions DHF-6 to DHF-10 prepared in comparative examples 6 to 10, respectively.
The foaming power, foam stability and foam carrying capacity of the foam drainage agent composition were measured by a model 2151 roche foam meter, wherein the results are shown in table 6 (0%, 50%,70% by volume of condensate).
TABLE 6
Test example 4
According to the method of test example 1, except for replacing the foam drainage agent compositions with the foam drainage agent compositions DHF-11 to DHF-15 prepared in comparative examples 11 to 15, respectively.
The foaming power, foam stability and foam carrying capacity of the foam drainage agent combination were measured by a model 2151 roche foam tester, wherein the results are shown in table 7 (condensate oil volume content 0%,50%, 70%).
TABLE 7
Test example 5
According to the method of test example 1, except for replacing the foam drainage agent composition liquid with the foam drainage agent composition liquid DHF-16 prepared in comparative example 16, respectively.
The foaming power, foam stability and foam carrying capacity of the foam drainage agent composition were measured by a model 2151 roche foam meter, wherein the results are shown in table 8 (0% volume of condensate, 50%, 70%).
TABLE 8
As can be seen from the data in tables 2-8, the foam drainage agent composition provided by the invention has better foaming power, foam stability and foam carrying amount in aqueous solutions with different mineralization degrees when the volume content of the high condensate oil is 0%,50% and 70%.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including various technical features being combined in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (13)
1. A foam drainage composition comprising: hydrocarbyl amido betaines, polyether quaternary ammonium salts, and sulfonate anionic surfactants;
the alkyl amido betaine has a structure shown in a formula (I),
in the formula (I), R 1 Is a C10-C26 aliphatic hydrocarbon group; r 2 Is C1-C5 alkylene; r 3 And R 4 Each independently selected from the group consisting of C1-C5 hydrocarbyl and C1-C5 alkoxy; r 5 Is a substituted or unsubstituted C1-C5 alkylene group or is- (CH) 2 ) n -O-, wherein n is an integer from 1 to 5;
m is any number from 1 to 3; x is selected from anionic groups which render the molecule of formula (I) electrically neutral;
the polyether quaternary ammonium salt has a structure shown in a formula (II),
in the formula (II), R 1 A group selected from the group consisting of C10-C26 aliphatic hydrocarbon groups, C10-C26 aryl groups, and C11-C30 aryl groups substituted with C1-C4 hydrocarbon groups; y is any number from 0 to 20; z is any number from 0 to 60, and y and z are not 0 at the same time; r 4 、R 5 、R 6 Each independently selected from the group consisting of C1-C5 substituted or unsubstituted hydrocarbyl and C1-C5 alkoxy; r 7 Selected from substituted or unsubstituted C1-C5 alkylene; y is selected from anions that render the molecule of formula (II) electrically neutral; j is the valence state of Y, and 1/j is the number of Y;
the mass ratio of the alkyl amido betaine to the polyether quaternary ammonium salt to the sulfonate anionic surfactant is 1:0.1-10:0.001 to 1;
the sulfonate anionic surfactant is selected from at least one of tetradecyl hexadecyl alpha olefin sulfonate, decyl sulfonate, fluorononenoxybenzene sodium sulfonate, dodecyl benzene sodium sulfonate and dodecyl polyoxyethylene ether sodium sulfonate;
the composition also contains at least one of methanol, ethanol, isopropanol, ethylene glycol monobutyl ether and ethylene glycol methyl ether, and the content of the composition is 0.01-5 parts by weight relative to 1 part by weight of the alkyl amido betaine.
2. The composition as set forth in claim 1, wherein the at least one of methanol, ethanol, isopropanol, ethylene glycol butyl ether and ethylene glycol methyl ether is contained in an amount of 0.1-1 part by weight with respect to 1 part by weight of the alkyl amido betaine.
3. The composition of claim 1 or 2, wherein R 1 Is a C10-C20 aliphatic hydrocarbon group;
R 2 is-C 2 H 4 -or-C 3 H 6 -；
m is an integer of 1 to 3;
R 3 and R 4 Each independently selected from the group consisting of C1-C5 alkyl and C1-C5 alkoxy;
x is selected from-COO - 、-SO 3 - and-HPO 4 - At least one of (1).
4. The composition of claim 3, wherein m is 2;
R 3 and R 4 Each independently selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, C 2 H 5 O-and C 3 H 7 O-group.
5. The composition of claim 1 or 2, wherein R 1 A group selected from the group consisting of C10-C20 aliphatic hydrocarbon groups, C10-C20 aryl groups, and C11-C24 aryl groups substituted with C1-C4 hydrocarbon groups;
y is any number from 1 to 10, and z is any number from 1 to 10;
R 4 、R 5 、R 6 each independently selected from methoxy, ethoxy, propoxy, methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl or isopentyl;
R 7 is-C 2 H 4 -or-C 3 H 6 -；
Y is halogen ion, sulfate ion, sulfite ion, acetate ion or polyanion.
6. The composition of claim 5, wherein R 1 A group selected from the group consisting of a C10-C20 alkyl group and a C11-C24 aryl group substituted with at least one substituent selected from the group consisting of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group and a tert-butyl group.
7. The composition as claimed in claim 1 or 2, wherein the mass ratio of the alkyl amido betaine, the polyether quaternary ammonium salt and the sulfonate anionic surfactant is 1:0.5-5:0.05-0.5.
8. A foam drainage composition comprising the foam drainage composition of any one of claims 1 to 7 and water.
9. The composition of claim 8, wherein the foam drainage composition is present in an amount of 0.2 to 2 wt%.
10. Use of the foam drainage agent composition according to any one of claims 1 to 7 or the foam drainage agent composition according to claim 8 or 9 in gas well drainage gas production.
11. Use according to claim 10 wherein the gas well has a condensate content of 0 to 70% by volume.
12. Use according to claim 10, wherein the foam drainage composition is used in an amount of 0.1 to 2g, corresponding to 100mL of water and condensate.
13. Use according to claim 12, wherein the foam drainage composition is used in an amount of 0.1 to 1g, corresponding to 100mL of water and condensate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105439885A (en) * | 2015-12-01 | 2016-03-30 | 西安长庆化工集团有限公司 | Fatty acid amide propyl betaine foam scrubbing agent as well as preparation method and application thereof |
| CN106244127A (en) * | 2016-07-25 | 2016-12-21 | 北京众博达石油科技有限公司 | A kind of environment-friendly type foaming water discharge agent and preparation method thereof |
| CN107603581A (en) * | 2017-10-18 | 2018-01-19 | 中国石油化工股份有限公司 | Efficient foam water discharge agent composition and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2913351B1 (en) * | 2007-03-08 | 2010-11-26 | Rhodia Recherches Et Tech | USE OF BETAINE AS A DRAINAGE REDUCTION AGENT FOR FOAM |
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| CN105439885A (en) * | 2015-12-01 | 2016-03-30 | 西安长庆化工集团有限公司 | Fatty acid amide propyl betaine foam scrubbing agent as well as preparation method and application thereof |
| CN106244127A (en) * | 2016-07-25 | 2016-12-21 | 北京众博达石油科技有限公司 | A kind of environment-friendly type foaming water discharge agent and preparation method thereof |
| CN107603581A (en) * | 2017-10-18 | 2018-01-19 | 中国石油化工股份有限公司 | Efficient foam water discharge agent composition and its preparation method and application |
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