CN111088026B - Foaming agent and preparation method and application thereof - Google Patents
Foaming agent and preparation method and application thereof Download PDFInfo
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- CN111088026B CN111088026B CN201911139524.8A CN201911139524A CN111088026B CN 111088026 B CN111088026 B CN 111088026B CN 201911139524 A CN201911139524 A CN 201911139524A CN 111088026 B CN111088026 B CN 111088026B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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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
- 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
- C09K8/58—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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Abstract
The invention discloses a foaming agent and a preparation method and application thereof. The foaming agent comprises the following raw materials in parts by weight: 15 parts of pulp waste liquid; 4-5 parts of concentrated sulfuric acid; 8-10 parts of alkali; 30-35 parts of alpha-olefin sodium sulfonate; 20-25 parts of sodium heavy alkylbenzene sulfonate; 1.0-1.5 parts of dodecyl dimethyl amine oxide; 1.0-1.5 parts of modified silicone polyether emulsion. The invention also provides a preparation method of the foaming agent and application of the foaming agent in steam injection thermal recovery anti-steam channeling of a heavy oil reservoir or a thin oil reservoir. The foaming agent and the steam are injected into the oil layer together, and the problems of uneven steam absorption profile, steam channeling and steam overtopping in the steam injection process can be solved, so that the swept volume of the steam is increased, the utilization degree of the oil layer is increased, and the recovery ratio is increased to the maximum extent.
Description
Technical Field
The invention relates to the technical field of oilfield chemistry. More particularly, it relates to a foaming agent and its preparation method and application.
Background
The heavy oil field accounts for two thirds of the whole oil field yield in Liaohe oil field, and the efficient development of the heavy oil is an important way for improving the crude oil yield. The main problems existing in the current thick oil exploitation process are as follows: one oil layer has large longitudinal utilization difference, is influenced by the heterogeneity of the oil reservoir, has uneven steam absorption of each single layer and low steam swept volume; and secondly, because the density and viscosity of the steam are very low, the steam is very easy to flow, and the steam is easy to cause 'override' and 'steam channeling' due to gravity difference, the gravity override enables the steam to rise to displace crude oil at the top of the oil reservoir, and when the steam breaks through at the production well, a large amount of crude oil reserves at the lower part of the oil reservoir are still not extracted. Steam channeling displaces the crude oil from the high permeability reservoir, but the crude oil from the adjacent, mostly low permeability reservoir cannot be recovered. Particularly, in the later stage of steam injection and multiple steam huff and puff of a heavy oil reservoir, steam channeling is serious due to stratum heterogeneity, steam channeling flows along a high-permeability zone, a low-permeability zone enriched with residual oil is not effectively used all the time, the steam sweep efficiency is low, the oil reservoir development effect is poor, and the cycle oil production is low, the oil-steam ratio is low, and the comprehensive water content is high.
The best method for selectively blocking steam channeling and enlarging swept volume is to inject high temperature resistant foam, but in order to reduce condensation of steam, non-condensable gas such as nitrogen, carbon dioxide and the like is required to be injected together with the steam-containing foaming agent mixture. The high-temperature foaming chemical agent used in China at present is difficult to reach 300 ℃ on one hand, and short in foam half-life period on the other hand.
Accordingly, the present invention provides a foaming agent, a preparation method and an application thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a foaming agent and a preparation method and application thereof; the foaming agent achieves the purposes of resisting high temperature and prolonging the half-life period of foam, blocks steam flow channeling and overlap to the greatest extent, improves a steam suction profile and improves the exploitation efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the foaming agent comprises the following raw material components in parts by weight:
in the foaming agent, the paper pulp waste liquid contains a large amount of components such as lignin, fatty acid sodium soap, abietic acid sodium soap and the like to synthesize a surface active substance with a foaming function, concentrated sulfuric acid is used for generating an active agent with a sulfating foaming function, alkali is used for neutralizing and further reducing the surface tension, alpha-olefin sodium sulfonate is used for improving the foaming effect, sodium dialkylbenzenesulfonate is used for improving the temperature resistance of the foaming agent, dodecyldimethyl amine oxide is used for increasing and stabilizing bubbles, and the modified silicone resin polyether emulsion is used for stabilizing the bubbles for a long time and strongly improving the half-life period of the bubbles and the temperature resistance. The raw material components in the foaming agent are matched with each other and have synergistic effect, so that the obtained foaming agent is high-temperature resistant, and the half-life period is prolonged by 550 min.
Preferably, the pulp waste liquor is a kraft pulping waste liquor. It should be understood that the spent pulp liquor in the present invention is a by-product of kraft papermaking pulp.
Preferably, the concentrated sulfuric acid is 98% sulfuric acid by mass fraction.
Preferably, the alkali is pure sodium hydroxide.
The invention also provides a preparation method of the foaming agent, which comprises the following steps:
1) heating the pulp waste liquid to 45-50 ℃ under the stirring condition, keeping the temperature, adding concentrated sulfuric acid, and continuously stirring for 25-30 min to obtain a mixture A;
2) mixing and stirring the alkali and the mixture A for 25-30 min at the temperature of 45-50 ℃ to obtain a mixture B;
3) adding the alpha-olefin sodium sulfonate into the mixture B for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the alpha-olefin sodium sulfonate is added to prepare a mixture C;
4) adding the sodium heavy alkylbenzene sulfonate into the mixture C for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the sodium heavy alkylbenzene sulfonate is added to prepare a mixture D;
5) and mixing and stirring the dodecyl dimethyl amine oxide, the modified silicone resin polyether emulsion and the mixture D for 9-10 min at the temperature of 45-50 ℃ to obtain the foaming agent.
It should be understood that the preparation process of the foaming agent is always carried out under the stirring condition, the pulp waste liquid is heated to a certain temperature and then is kept warm, and the addition and the stirring of the other raw materials are also carried out under the temperature condition; in addition, the adding sequence of the raw materials in the application is carried out according to the sequence stated in the invention; firstly, concentrated sulfuric acid is added to produce sulfated surfactants, and alkali is added to neutralize redundant acid and convert the redundant acid into other active substances and the like; the raw materials are added in multiple times for sufficient dissolution and reaction.
Preferably, the heating rate of the heating in the step 1) is 4-5 ℃/min.
Preferably, the number of times of adding the sodium alpha-olefin sulfonate into the mixture B in multiple portions in the step 3) is 4.
Preferably, the adding times of the sodium heavy alkylbenzene sulfonate into the mixture C in multiple times in the step 4) are 4 times.
Preferably, the stirring speed in the steps 1) to 5) is 110-120 r/min.
The invention also provides application of the foaming agent or the foaming agent prepared by the preparation method in steam channeling prevention in oil reservoir steam injection thermal recovery.
Preferably, the reservoir is a heavy oil reservoir or a thin oil reservoir.
Unless otherwise specified, any range recited herein includes any subrange defined by the endpoints and any numerical values between the endpoints.
The invention has the following beneficial effects:
(1) the invention provides a foaming agent, which improves the temperature resistance and prolongs the half-life period of foam; the high-temperature foaming agent still has good thermochemical stability at the high temperature of 300 ℃, 100mL of foaming agent solution with the concentration of 0.5 percent is taken after aging for 24 hours at the temperature of 300 ℃, the foaming volume can reach 800mL, the half-life period is 510min, and the volume is far higher than that of similar products;
(2) the foaming agent uses the waste paper pulp liquid, so that the cost of the agent is reduced, the environment is protected, the social benefit is remarkable, and the wide application prospect is realized;
(3) the foaming agent and the steam are injected into the oil layer together, and the problems of uneven steam absorption profile, steam channeling and steam overtopping in the steam injection process can be solved, so that the swept volume of the steam is increased, the utilization degree of the oil layer is increased, and the recovery ratio is increased to the maximum extent.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
In the invention, the preparation method is a conventional method if no special description is provided; the raw materials used are commercially available from public commercial sources unless otherwise specified, and the alpha-olefin sodium sulfonate, the heavy alkyl benzene sodium sulfonate, the dodecyl dimethyl amine oxide and the modified silicone polyether emulsion described in the present invention are all commercially available industrial products, and any commercially available product meeting the corresponding quality standard can be used in the present invention to achieve the purpose of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The embodiment provides a preparation method of a foaming agent, which comprises the following steps:
1) pouring 189.8 kg of pulp waste liquid into a ceramic reaction kettle, heating to 50 +/-1 ℃ at the speed of 5 ℃/min under the stirring speed of 120r/min, keeping the temperature and the stirring speed, adding 50.6 kg of 98 mass percent concentrated sulfuric acid, and continuously stirring for 30min to obtain a mixture A;
2) keeping the temperature of the ceramic reaction kettle at 50 +/-1 ℃, slowly adding 101.3 kg of sodium hydroxide into the ceramic reaction kettle at the stirring speed of 120r/min, and continuously stirring for 30min to obtain a mixture B;
3) keeping the temperature of the ceramic reaction kettle at 50 +/-1 ℃, adding 379.8 kg of alpha-olefin sodium sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 120r/min, wherein each time is separated by 5min, and continuously stirring for 10min after all the alpha-olefin sodium sulfonate is added to obtain a mixture C;
4) keeping the temperature of the ceramic reaction kettle at 50 +/-1 ℃, adding 253.2 kg of sodium heavy alkylbenzene sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 120r/min, wherein each time is separated by 5min, and continuously stirring for 10min after all the sodium heavy alkylbenzene sulfonate is added to obtain a mixture D;
5) keeping the temperature of the ceramic reaction kettle at 50 +/-1 ℃, simultaneously adding 12.6 kg of dodecyl dimethyl amine oxide and 12.6 kg of modified silicone resin polyether emulsion into the ceramic reaction kettle, stirring for 10min, stopping heating to obtain a foaming agent, and naturally cooling the ceramic reaction kettle to room temperature and then packaging in a barrel.
Example 2
The embodiment provides a preparation method of a foaming agent, which comprises the following steps:
1) pouring 161.2 kg of pulp waste liquid into a ceramic reaction kettle, heating to 45 +/-1 ℃ at the speed of 5 ℃/min under the stirring speed of 110r/min, keeping the temperature and the stirring speed, adding 53.8 kg of 98 mass percent concentrated sulfuric acid, and continuously stirring for 30min to obtain a mixture A;
2) keeping the temperature of the ceramic reaction kettle at 45 +/-1 ℃, slowly adding 107.5 kg of sodium hydroxide into the ceramic reaction kettle at the stirring speed of 110r/min, and continuously stirring for 25min to obtain a mixture B;
3) keeping the temperature of the ceramic reaction kettle at 45 +/-1 ℃, adding 376.3 kg of alpha-olefin sodium sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 110r/min, wherein each time is 4min apart, and continuously stirring for 9min after all the alpha-olefin sodium sulfonate is added to obtain a mixture C;
4) keeping the temperature of the ceramic reaction kettle at 45 +/-1 ℃, adding 268.8 kg of sodium alkylbenzene sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 110r/min, wherein each time is 4min, and continuously stirring for 9min after all the sodium alkylbenzene sulfonate is added to obtain a mixture D;
5) keeping the temperature of the ceramic reaction kettle at 45 +/-1 ℃, simultaneously adding 16.1 kg of dodecyl dimethyl amine oxide and 16.1 kg of modified silicone resin polyether emulsion into the ceramic reaction kettle, stirring for 9min, stopping heating to obtain a foaming agent, and naturally cooling the ceramic reaction kettle to room temperature and then packaging in a barrel.
Example 3
The embodiment provides a preparation method of a foaming agent, which comprises the following steps:
1) pouring 174.4 kg of pulp waste liquid into a ceramic reaction kettle, heating to 48 +/-1 ℃ at the speed of 4 ℃/min under the stirring speed of 120r/min, keeping the temperature and the stirring speed, adding 52 kg of 98 mass percent concentrated sulfuric acid, and continuing stirring for 30min to obtain a mixture A;
2) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, slowly adding 104.6 kg of sodium hydroxide into the ceramic reaction kettle at the stirring speed of 120r/min, and continuously stirring for 30min to obtain a mixture B;
3) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, adding 378 kilograms of alpha-olefin sodium sulfonate into the ceramic reaction kettle for 4 times at the stirring speed of 120r/min, wherein each time is separated by 5min, and continuously stirring for 10min after all the alpha-olefin sodium sulfonate is added to obtain a mixture C;
4) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, adding 262 kg of sodium heavy alkylbenzene sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 120r/min, wherein each time is separated by 5min, and continuously stirring for 10min after all the sodium heavy alkylbenzene sulfonate is added to obtain a mixture D;
5) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, simultaneously adding 14.5 kg of dodecyl dimethyl amine oxide and 14.5 kg of modified silicone resin polyether emulsion into the ceramic reaction kettle, stirring for 10min, stopping heating to obtain a foaming agent, and naturally cooling the ceramic reaction kettle to room temperature and then packaging in a barrel.
Test example 1
The test example provides a method for testing foamability and stability of a foaming agent, comprising the following steps:
the foaming property and stability of the foaming agent are evaluated by adopting a Waring Blender method, specifically, a foaming agent solution with the concentration of 0.5% and the volume of 100mL is prepared by respectively using the foaming agents prepared in the embodiments 1 to 4, the foaming agent solution is poured into a Waring stirrer, the stirring is carried out for 1min at the rotating speed of 3500r/min, the foam is poured into a 1000mL measuring cylinder, the foam volume is immediately read as the foaming volume of the foaming agent, and the general foam decay time is recorded as the foam half-life. The specific experimental results are shown in table 1.
Indoor evaluation shows that the foaming property temperature resistance and the foaming property are good, and the application prospect is good.
Table 1 evaluation table of foaming agent properties
Comparative example 1
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 189.8 kg of pulp waste, 50.6 kg of concentrated sulfuric acid and 101.3 kg of sodium hydroxide were replaced with 189.8 kg of water, 50.6 kg of water and 101.3 kg of water, respectively.
Comparative example 2
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 12.6 kg of water was used instead of 12.6 kg of modified silicone polyether emulsion.
Comparative example 3
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 12.6 kg of water was used instead of 12.6 kg of dodecyldimethylamine oxide.
Comparative example 4
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 379.8 kg of water was used instead of 379.8 kg of sodium alpha-olefinsulfonate.
Comparative example 5
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 253.2 kg of water was used instead of 253.2 kg of sodium heavy alkylbenzene sulfonate.
Test example 2
The test example provides a method for testing foamability and stability of a foaming agent, and the procedure is the same as that of test example 1 except that foaming agent solutions prepared in comparative examples 1 to 5 were used respectively to prepare foaming agent solutions. The specific experimental results are shown in table 2.
TABLE 2 foaming agent component reduction evaluation test data
Comparative example 6
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 2, except that: 161.2 kg of water, 53.8 kg of water and 107.5 kg of water were used instead of 161.2 kg of pulp waste liquid, 53.8 kg of concentrated sulfuric acid and 107.5 kg of sodium hydroxide, respectively.
Comparative example 7
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 2, except that: 16.1 kg of water was used instead of 16.1 kg of modified silicone polyether emulsion.
Comparative example 8
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 2, except that: 16.1 kg of water was used instead of 16.1 kg of dodecyldimethylamine oxide.
Comparative example 9
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 2, except that: 376.3 kg of water was used instead of 376.3 kg of sodium alpha-olefinsulfonate.
Comparative example 10
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 2, except that: 268.8 kg of water was used instead of 268.8 kg of sodium heavy alkyl benzene sulfonate.
Test example 3
The test example provides a method for testing foamability and stability of a foaming agent, and the procedure is the same as that of test example 1, except that the foaming agents prepared in comparative examples 6 to 10 were used to prepare foaming agent solutions. The specific experimental results are shown in Table 3.
TABLE 3 evaluation of blowing agent component reduction Experimental data
Comparative example 11
The comparative example provides a method of preparing a blowing agent, comprising the steps of:
1) pouring 150 kg of pulp waste liquid into a ceramic reaction kettle, heating to 48 +/-1 ℃ at the speed of 4 ℃/min under the stirring speed of 120r/min, keeping the temperature and the stirring speed, adding 32 kg of 98 mass percent concentrated sulfuric acid, and continuing stirring for 30min to obtain a mixture A;
2) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, slowly adding 108 kg of sodium hydroxide into the ceramic reaction kettle at the stirring speed of 120r/min, and continuously stirring for 30min to obtain a mixture B;
3) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, adding 376 kg of alpha-olefin sodium sulfonate into the ceramic reaction kettle for 4 times at a stirring speed of 120r/min, wherein each time is separated by 5min, and continuously stirring for 10min after all the alpha-olefin sodium sulfonate is added to obtain a mixture C;
4) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, adding 269 kg of sodium heavy alkylbenzene sulfonate into the ceramic reaction kettle at a stirring speed of 120r/min for 4 times, wherein each time is separated by 5min, and continuously stirring for 10min after all the sodium heavy alkylbenzene sulfonate is added to obtain a mixture D;
5) keeping the temperature of the ceramic reaction kettle at 48 +/-1 ℃, simultaneously adding 9 kg of dodecyl dimethyl amine oxide, 9 kg of modified silicone resin polyether emulsion and 47 kg of water into the ceramic reaction kettle, stirring for 10min, stopping heating to obtain a foaming agent, and naturally cooling the ceramic reaction kettle to room temperature and then packaging in a barrel.
Test example 4
This test example provides a method for testing foaming properties and stability of a foaming agent, and the procedure is the same as in test example 1 except that a foaming agent solution is prepared using the foaming agent prepared in comparative example 11. The results of the experiments are shown in Table 4.
TABLE 4 evaluation of the Experimental data for the changes in the proportions of the blowing agent Components
Comparative example 12
This comparative example provides a process for the preparation of a blowing agent, the procedure being as in example 1, except that: 253.2 kg of sodium dodecylbenzenesulfonate was used instead of 253.2 kg of sodium heavy alkylbenzenesulfonate.
Test example 5
This test example provides a method for testing foaming properties and stability of a foaming agent, and the procedure is the same as in test example 1 except that a foaming agent solution is prepared using the foaming agent prepared in comparative example 12. The results of the experiments are shown in Table 5.
TABLE 5 evaluation of the composition of the blowing agent by changing the composition
The experimental data show that: (1) compared with the invention, the invention reduces the components of the waste paper pulp liquid and the concentrated sulfuric acid, and has great influence on the foaming rate and the half-life period; (2) compared with the reduction of other components, the foaming rate and half-life period are reduced; (3) compared with the invention, if the mass fraction of the main component is reduced, the foaming rate and the half-life period are also reduced; (4) compared with the invention, if the components of the medicament are changed, the foaming rate and the half-life period are also reduced.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. The foaming agent is characterized by comprising the following raw material components in parts by weight:
the preparation method of the foaming agent comprises the following steps:
1) heating the pulp waste liquid to 45-50 ℃ under the stirring condition, keeping the temperature, adding concentrated sulfuric acid, and continuously stirring for 25-30 min to obtain a mixture A;
2) mixing and stirring the alkali and the mixture A for 25-30 min at the temperature of 45-50 ℃ to obtain a mixture B;
3) adding the alpha-olefin sodium sulfonate into the mixture B for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the alpha-olefin sodium sulfonate is added to prepare a mixture C;
4) adding the sodium heavy alkylbenzene sulfonate into the mixture C for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the sodium heavy alkylbenzene sulfonate is added to prepare a mixture D;
5) and mixing and stirring the dodecyl dimethyl amine oxide, the modified silicone resin polyether emulsion and the mixture D for 9-10 min at the temperature of 45-50 ℃ to obtain the foaming agent.
2. The foaming agent as claimed in claim 1, wherein the pulp waste liquor is a kraft pulp waste liquor.
3. The blowing agent of claim 1 wherein said concentrated sulfuric acid is 98% sulfuric acid by mass.
4. The blowing agent of claim 1 wherein said base is sodium hydroxide.
5. A method for preparing the blowing agent according to any of claims 1 to 4, comprising the steps of:
1) heating the pulp waste liquid to 45-50 ℃ under the stirring condition, keeping the temperature, adding concentrated sulfuric acid, and continuously stirring for 25-30 min to obtain a mixture A;
2) mixing and stirring the alkali and the mixture A for 25-30 min at the temperature of 45-50 ℃ to obtain a mixture B;
3) adding the alpha-olefin sodium sulfonate into the mixture B for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the alpha-olefin sodium sulfonate is added to prepare a mixture C;
4) adding the sodium heavy alkylbenzene sulfonate into the mixture C for multiple times at intervals of 4-5 min each time under the conditions of 45-50 ℃ and stirring, and continuously stirring for 9-10 min after all the sodium heavy alkylbenzene sulfonate is added to prepare a mixture D;
5) and mixing and stirring the dodecyl dimethyl amine oxide, the modified silicone resin polyether emulsion and the mixture D for 9-10 min at the temperature of 45-50 ℃ to obtain the foaming agent.
6. The preparation method according to claim 5, wherein the heating rate of the heating in step 1) is 4-5 ℃/min.
7. The method according to claim 5, wherein the number of times of adding the sodium α -olefin sulfonate in the mixture B in multiple portions in step 3) is 4.
8. The process according to claim 5, wherein the sodium dialkylbenzenesulfonate is added to the mixture C in a plurality of portions in 4) in the step 4).
9. The preparation method of claim 5, wherein the stirring speed in the steps 1) to 5) is 110-120 r/min.
10. The application of the foaming agent as defined in any one of claims 1-4 in steam injection thermal recovery and steam channeling prevention of heavy oil reservoirs or thin oil reservoirs.
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| 再生废纸纤维资源化利用及效益研究;章佩丽; 陶敏龙; 王浩; 崔慧贞;《资源节约与环保》;20151025(第10期);第23-24页 * |
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