CN112521316A - Gemini surfactant type clay stabilizer and preparation method thereof - Google Patents
Gemini surfactant type clay stabilizer and preparation method thereof Download PDFInfo
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
- C07C309/03—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C309/13—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/14—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton containing amino groups bound to the carbon skeleton
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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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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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
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/607—Compositions for stimulating production by acting on the underground formation specially adapted for clay formations
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention discloses a gemini surfactant type clay stabilizer and a preparation method thereof, and mainly solves the problem that the existing clay stabilizer is poor in use effect. The preparation method comprises the steps of firstly reacting ethylenediamine with 1, 3-propane sultone to obtain a substance A, and then reacting the substance A with bromoalkane to obtain a final product. The surfactant has the advantages of reliable preparation process, low cost, low use concentration, wide range and simple use method, and can inhibit the expansion of clay minerals in the stratum for a long time.
Description
Technical Field
The invention belongs to the field of oilfield development, and particularly relates to a gemini surfactant type clay stabilizer and a preparation method thereof.
Background
Damage to formation permeability caused by expansion and migration of clay minerals in fresh water is a serious problem in petroleum production. Many oil-producing formations contain montmorillonite, illite, mixed layer clays and chlorite, which clays and particulates absorb water and swell, exfoliate and migrate, and it is generally not possible to restore the original permeability of the formation when the clay particles are rearranged and disturbed. Therefore, the formation damage caused by the clay is mainly prevented rather than saved afterwards, so that the research on the long-acting anti-swelling agent capable of inhibiting the swelling of the clay minerals in the formation has important significance for the development of oil fields.
Water flooding formations and oil recovery formations often contain a certain amount of water swellable montmorillonite, illite, etc., and the water swelling of these clay minerals is determined by their crystal structure. The crystal structure of montmorillonite, for example, is a sheet structure consisting of two layers of silicon-oxygen tetrahedra sandwiching a layer of aluminum-oxygen octahedra, which are stacked together by intermolecular forces. Montmorillonite crystals often exhibit a valence imbalance due to lattice substitutions, e.g., silicon for aluminum and aluminum for magnesium, and a certain number of cations are bound to the surface to compensate. When montmorillonite is contacted with water, the water enters between the sheet-like structures of montmorillonite, so that these cations are dissociated, and the surface of the sheet-like structure is negatively charged. The negatively charged sheet structures separate themselves due to electrostatic repulsion, creating the clay swelling we commonly see. The clay particles migrate with the fluid to block the pore channels of the oil layer, causing damage to the oil layer. For this purpose, clay stabilizers have to be used.
At present, inorganic acids and inorganic salts, inorganic polynuclear polymers, cationic surfactants, cationic high molecular polymers and complex clay stabilizers are mainly used as common clay stabilizers. The quaternary ammonium salt can be effectively adsorbed on the surface of clay, so that the strength of a loose sandstone oil layer is enhanced, the damage to an oil-gas layer caused by hydration expansion and dispersion migration of water-sensitive minerals is prevented, the hydration expansion and dispersion migration of the clay minerals caused by the contact of the oil layer and external water in drilling, well completion, well workover, acidification, fracturing and water injection drilling and production processes of an oil field are eliminated and prevented, a monomolecular adsorption film is formed on the surface of the clay, the clay minerals are stabilized for a long time, and the oil-gas layer is effectively protected.
After the clay stabilizer on the market enters a stratum, crude oil is easy to emulsify to form water-in-oil, the flow resistance of the crude oil is increased, the pressure is increased during injection, and the pressure sometimes exceeds the capacity of equipment, so that the injection water cannot be injected. In addition, there are other disadvantages: the thermal stability is poor, the temperature resistance is reduced along with the increase of the relative molecular mass, and the clay anti-swelling agent is not suitable for clay anti-swelling under the high-temperature condition; the effective time is short, the acid and alkali resistance is poor, the water washing resistance is poor, and the cost is high; poor salt resistance and the like, and limits the application range of the salt-resistant material. Therefore, the clay stabilizer which has good temperature resistance and salt resistance, wide application range, long-term effectiveness and simple usage has important significance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a gemini surfactant type clay stabilizer and a preparation method thereof, solving the problem of poor using effect of the existing clay stabilizer, wherein the clay stabilizer can inhibit clay swelling for a long time.
In order to solve the technical problems, the invention adopts the technical scheme that: a gemini surfactant type clay stabilizer has the following structure:
wherein R is1Is bromododecaalkane, tetradecane and hexadecane long chain.
A method for preparing gemini surfactant type clay stabilizer comprises the following steps:
(1) adding ethylenediamine and 1, 3-propane sultone into acetone, water and 1, 4-dioxane as solvents, reacting at 65-85 ℃ for 4-6 h, adjusting the pH to 6-8 by using hydrochloric acid with the mass fraction of 8-12%, filtering the separated white solid, collecting the filtrate, and distilling the filtrate under reduced pressure to obtain a substance A;
(2) reacting the substance A obtained in the step (1) with bromoalkane at the temperature of 80-100 ℃ for 7-9 h, adjusting the pH to 6-8 by using hydrochloric acid with the mass fraction of 8-12%, filtering the separated white solid, collecting the filtrate, and distilling the filtrate under reduced pressure to obtain the amphiprotic gemini surfactant type clay stabilizer.
The molar ratio of the ethylenediamine to the 1, 3-propane sultone is 1: 1.8-2.4. Preferably, the molar ratio of ethylenediamine to 1, 3-propane sultone is 1: 2.
The molar ratio of the substance A to the brominated alkane is 1: 3.8-4.0. Preferably, the molar ratio of substance a to brominated alkanes is 1: 4.
In the whole reaction process, acetone, water and dioxane are used as solvents, and the volume ratio of the acetone to the water to the dioxane is 0.5-1.5: 5-6: 2-4. Preferably, the volume ratio of acetone, water and dioxane is 1:6: 3.
The brominated alkane is one or more of bromododecane, bromotetradecane and bromohexadecane.
The invention has the beneficial effects that:
(1) the raw materials are relatively easy to obtain, the production flow is simple, and the yield is high.
(2) The clay stabilizer has the advantages of good solubility in water, excellent anti-swelling performance, long-term effectiveness, firm combination with clay and high efficiency.
(3) The clay stabilizer has small dosage and strong oil reservoir adaptability, and can meet the requirement of oil field development.
(4) The clay stabilizer has good temperature resistance and salt tolerance and good compatibility.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
The preparation raw materials of the clay stabilizer mainly comprise the following components: ethylenediamine, 1, 3-propane sultone and alkyl bromide.
The gemini surfactant type clay stabilizer comprises the following synthesis steps:
1. adding ethylenediamine and 1, 3-propane sultone into acetone, water and dioxane as solvents, reacting at 65-85 ℃ for 4-6 h, adjusting the pH to 6-8 by using 8-12% hydrochloric acid, filtering the separated white solid, collecting the filtrate, and distilling the filtrate under reduced pressure to obtain a substance A, wherein the reaction process is as follows:
2. and (2) reacting the substance A obtained in the step (1) with bromoalkane at the temperature of 80-100 ℃ for 7-9 h, adjusting the pH of the reaction solution to 6-8 by using 8-12% hydrochloric acid, filtering to separate out a white solid, collecting filtrate, distilling under reduced pressure, and evaporating to remove the solvent to obtain the gemini surfactant.
Wherein R is1Is bromododecaalkane, tetradecane and hexadecane long chain.
Furthermore, the volume ratio of the solvent acetone, water and dioxane is 0.5-1.5: 5-6: 2-4.
Further, the volume ratio of the solvent acetone, water and dioxane is 1:6: 3.
Furthermore, the molar ratio of the ethylenediamine to the 1, 3-propane sultone is 1: 1.8-2.4.
Further, the molar ratio of ethylenediamine to 1, 3-propane sultone was 1: 2.
Furthermore, the molar ratio of the substance A to the brominated alkane is 1: 3.8-4.0.
Further, the molar ratio of the substance A to the brominated alkane is 1: 4.
Further, the alkyl bromide is one or more of dodecyl bromide, tetradecane and hexadecane.
The first embodiment is as follows:
1. 2mL of acetone, 12mL of water and 6mL of 1, 4-dioxane are sequentially added into a three-neck flask, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are added into a solvent, and the mixture is stirred uniformly. Weighing 0.4mmol of 1, 3-propane sultone, placing in a constant pressure dropping funnel, slowly dropping 1, 3-propane sultone into a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution is heated to 75 ℃ and reacted for 5 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.8mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 90 ℃, and carrying out reflux reaction for 8 h. After the reaction is finished, cooling the reaction liquid to room temperature, filtering to separate out white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example two:
1. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are sequentially added into a three-necked flask, and the mixture is stirred uniformly. Weighing 0.4mol of 1, 3-propane sultone, placing the 1, 3-propane sultone in a constant pressure dropping funnel, slowly dropping the 1, 3-propane sultone in a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution is heated to 80 ℃ and reacted for 4 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.8mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 80 ℃, and carrying out reflux reaction for 8 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering to separate out a white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example three:
1. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are sequentially added into a three-necked flask, and the mixture is stirred uniformly. Weighing 0.4mol of 1, 3-propane sultone, placing the 1, 3-propane sultone in a constant pressure dropping funnel, slowly dropping the 1, 3-propane sultone in a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution was heated to 75 ℃ and reacted for 6 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.8mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 90 ℃, and carrying out reflux reaction for 7 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering to separate out a white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example four:
1. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are sequentially added into a three-necked flask, and the mixture is stirred uniformly. Weighing 0.4mol of 1, 3-propane sultone, placing the 1, 3-propane sultone in a constant pressure dropping funnel, slowly dropping the 1, 3-propane sultone in a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution is heated to 80 ℃ and reacted for 6 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.8mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 95 ℃, and carrying out reflux reaction for 9 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering to separate out a white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example five:
1. 2mL of acetone, 12mL of water and 6mL of 1, 4-dioxane are sequentially added into a three-neck flask, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are added into a solvent, and the mixture is stirred uniformly. Weighing 0.44mmol of 1, 3-propane sultone, placing the 1, 3-propane sultone in a constant pressure dropping funnel, slowly dropping the 1, 3-propane sultone into a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution was heated to 75 ℃ and reacted for 5 hours. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.76mmol of bromoalkane, placing the bromoalkane into a constant-pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after the dropping of the bromoalkane is finished for 20min, heating to 90 ℃, and carrying out reflux reaction for 8 h. After the reaction is finished, cooling the reaction liquid to room temperature, filtering to separate out white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example six:
1. 2mL of acetone, 12mL of water and 6mL of 1, 4-dioxane are sequentially added into a three-neck flask, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are added into a solvent, and the mixture is stirred uniformly. Weighing 0.48mmol of 1, 3-propane sultone, placing in a constant pressure dropping funnel, slowly dropping 1, 3-propane sultone into a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution was heated to 75 ℃ and reacted for 5 hours. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.78mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 90 ℃, and carrying out reflux reaction for 8 h. After the reaction is finished, cooling the reaction liquid to room temperature, filtering to separate out white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example seven:
1. 2mL of acetone, 12mL of water and 6mL of 1, 4-dioxane are sequentially added into a three-neck flask, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are added into a solvent, and the mixture is stirred uniformly. Weighing 0.48mmol of 1, 3-propane sultone, placing in a constant pressure dropping funnel, slowly dropping 1, 3-propane sultone into a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution is heated to 80 ℃ and reacted for 4 h. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.78mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 90 ℃, and carrying out reflux reaction for 8 h. After the reaction is finished, cooling the reaction liquid to room temperature, filtering to separate out white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example eight:
1. 2mL of acetone, 12mL of water and 6mL of 1, 4-dioxane are sequentially added into a three-neck flask, 0.4mmol of NaOH and 0.2mmol of ethylenediamine are added into a solvent, and the mixture is stirred uniformly. Weighing 0.48mmol of 1, 3-propane sultone, placing in a constant pressure dropping funnel, slowly dropping 1, 3-propane sultone into a three-neck flask, continuously stirring, and finishing dropping for 20 min. The reaction solution was heated to 75 ℃ and reacted for 5 hours. After the reaction is finished, cooling the reaction liquid to room temperature, adjusting the pH value to 6-8 by using 8% -12% hydrochloric acid, filtering out precipitated white solid, and collecting filtrate. The filtrate was distilled under reduced pressure, and the solvent was distilled off to obtain substance A.
2. 2mL of acetone, 12mL of water, 6mL of 1, 4-dioxane and 0.2mmol of the substance A obtained in the first example were sequentially added to a three-necked flask, and the mixture was stirred uniformly. Weighing 0.78mmol of bromoalkane, placing in a constant pressure dropping funnel, slowly dropping the bromoalkane into a three-necked bottle, after 20min of dropping, heating to 80 ℃, and carrying out reflux reaction for 9 h. After the reaction is finished, cooling the reaction liquid to room temperature, filtering to separate out white solid, and collecting filtrate. And distilling the filtrate under reduced pressure to obtain the Gemini surfactant.
Example nine:
and evaluating the anti-swelling performance of the products obtained in different examples.
The products obtained in each example were prepared into aqueous solutions having mass concentrations of 0.2%, 0.5%, and 1.0%, respectively, and the anti-swelling rates were measured by centrifugation. The test results are shown in table 1.
TABLE 1 anti-swelling ratio of the products obtained in the different examples
As can be seen from Table 1, the product obtained in example one has the best anti-swelling properties at the same mass concentration. As the mass concentration increases, the anti-swelling ratio of each example also increases. The anti-swelling rate of the product obtained in each embodiment is more than 85%, and the product has a good anti-swelling effect.
Example ten:
the product of the example is tested for temperature resistance and salt tolerance.
Under the conditions that the temperature is 200 ℃ and the mineralization degree is 210000mg/L, the products obtained in the embodiments are respectively prepared into aqueous solutions with the mass concentrations of 0.2%, 0.5% and 1.0%, and the temperature resistance and salt tolerance of the products obtained in the embodiments are tested. The test results are shown in table 2.
TABLE 2 temperature and salt tolerance of clay stabilizers at different concentrations
As can be seen from Table 2, under high temperature and high mineralization, the products of the examples can still maintain excellent performance of preventing the bentonite from hydration swelling, and the swelling prevention rate of the products obtained in the first example is the highest.
In conclusion, the product obtained in the embodiment has the advantages of temperature resistance, salt tolerance, wide application range and good anti-swelling performance, wherein the product obtained in the first embodiment has the best use effect. Is suitable for industrial production and has good market prospect and economic benefit. The contents of the present invention are not limited to the above-described embodiments, and those skilled in the art can easily suggest other embodiments within the technical teaching of the present invention, but such embodiments are included in the scope of the present invention.
Claims (9)
1. A gemini surfactant type clay stabilizer is characterized in that the gemini surfactant type clay stabilizer has the following structure:
wherein R is1Is bromododecaalkane, tetradecane and hexadecane long chain.
2. A preparation method of gemini surfactant type clay stabilizer is characterized by comprising the following steps:
(1) adding ethylenediamine and 1, 3-propane sultone into acetone, water and 1, 4-dioxane as solvents, reacting at 65-85 ℃ for 4-6 h, adjusting the pH to 6-8 by using hydrochloric acid with the mass fraction of 8-12%, filtering the separated white solid, collecting the filtrate, and distilling the filtrate under reduced pressure to obtain a substance A;
(2) reacting the substance A obtained in the step (1) with bromoalkane at the temperature of 80-100 ℃ for 7-9 h, adjusting the pH to 6-8 by using hydrochloric acid with the mass fraction of 8-12%, filtering the separated white solid, collecting the filtrate, and distilling the filtrate under reduced pressure to obtain the amphiprotic gemini surfactant type clay stabilizer.
3. The method for preparing the gemini surfactant type clay stabilizer according to claim 2, wherein the molar ratio of the ethylenediamine to the 1, 3-propane sultone is 1: 1.8-2.4.
4. The method for preparing the gemini surfactant type clay stabilizer according to claim 2, wherein the molar ratio of the substance A to the brominated alkane is 1: 3.8-4.0.
5. The method for preparing the gemini surfactant type clay stabilizer according to claim 2, wherein acetone, water and dioxane are used as solvents in the whole reaction process, and the volume ratio of the acetone to the water to the dioxane is 0.5-1.5: 5-6: 2-4.
6. The method of claim 2, wherein the brominated alkane is one or more of bromododecane, bromotetradecane, and bromohexadecane.
7. The method for preparing a gemini surfactant type clay stabilizer according to claim 5, wherein the volume ratio of the solvents of acetone, water and dioxane is 1:6: 3.
8. The method for preparing a gemini surfactant type clay stabilizer according to claim 3, wherein the molar ratio of ethylenediamine to 1, 3-propane sultone is 1: 2.
9. The method for preparing gemini surfactant type clay stabilizer according to claim 4, wherein the molar ratio of the substance A to the alkyl bromide is 1: 4.
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| CN118978649A (en) * | 2024-10-22 | 2024-11-19 | 辽宁辽河金宇能源集团有限公司科研分公司 | A clay stabilizer for oil well fracturing and preparation method thereof |
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| CN101966437A (en) * | 2010-10-12 | 2011-02-09 | 东北石油大学 | Sulphobetaine ampholytic gemini surfactant and synthesis method thereof |
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2020
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| CN118978649A (en) * | 2024-10-22 | 2024-11-19 | 辽宁辽河金宇能源集团有限公司科研分公司 | A clay stabilizer for oil well fracturing and preparation method thereof |
| CN118978649B (en) * | 2024-10-22 | 2024-12-31 | 辽宁辽河金宇能源集团有限公司科研分公司 | Clay stabilizer for oil well fracturing and preparation method thereof |
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