CN109749731B - Preparation method of tectorial membrane proppant for fracturing - Google Patents
Preparation method of tectorial membrane proppant for fracturing Download PDFInfo
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Abstract
The invention belongs to the technical field of compositions for enhancing fracture action, and particularly discloses a preparation method of a tectorial membrane proppant for fracturing, which comprises the following steps: (1) preparing raw materials; (2) adding water into the reaction kettle, and heating; (3) stirring, then adding acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, polyene amine and dimethyl diallyl ammonium chloride, and continuing stirring after adding the raw materials; (4) stirring when the temperature of the materials is stabilized at 65-75 ℃, adding an initiator, and continuously stirring for 4-7 min; (5) reacting for 3.5-4.5h to obtain the drag reducer, and discharging after the drag reducer has a drag reduction rate of more than 25%; if the requirement is not met, adding a sodium hydroxide solution for adjustment; (6) mixing the drag reducer with the proppant body according to the mass part ratio of the drag reducer to the proppant body of 0.8-1.5:100, so that the drag reducer covers the surface of the proppant body, and obtaining the coated proppant for fracturing. The prepared tectorial membrane proppant for fracturing has good resistance reduction performance and suspension performance.
Description
Technical Field
The invention belongs to the technical field of compositions for enhancing fracture action, and particularly relates to a preparation method of a tectorial membrane proppant for fracturing.
Background
The fracturing propping agent is a liquid auxiliary agent which is brought into a fracture by fracturing fluid and is used for propping the fracture of an oil field after pressure is released, so that the fracture can be supported and the smoothness of the fracture can be ensured, liquid flows into a drilling hole through the fracture, and collapse and leakage of a drilling well of a hole oil field caused by the fracture are prevented.
Ideal fracturing proppants for oil and gas wells require high carrying capacity and high sand ratios, and therefore require as low a density as possible and as high a strength as possible. The traditional fracturing propping agent comprises quartz sand, ceramsite and film-coated products of the quartz sand and the ceramsite, wherein an outer layer of a film is formed by solidifying phenolic aldehyde or epoxy resin at high temperature, the amount of a curing agent is generally 5-50% of the amount of the resin, the film-coating temperature is about 230 ℃, the traditional fracturing propping agent has high strength, but high density, poor suspension property and easy precipitation, and is not easy to be carried into a well.
To more effectively bring the fracturing proppant to the target location of the well, a carrier fluid needs to be formulated during the fracturing process. The carrier fluid is prepared by taking water as a dispersion medium and adding a thickening agent and an additive into the dispersion medium, and mainly adopts three water-soluble polymers as the thickening agent, namely vegetable gum (guar gum, sesbania, konjak and the like), cellulose derivatives and synthetic polymers, and substances such as the thickening agent and the like are added to improve the viscosity of the carrier fluid and reduce the friction resistance of the carrier fluid. Successful fracturing operations require the carrier fluid to be able to break the gel quickly, return quickly after operation, have low friction during pumping, and be economically feasible, in addition to having a high viscosity. The thickening agent and the additive added in the existing carrying fluid have the defects of high cost, serious damage to a reservoir and great environmental pollution, and the situations of incomplete gel breaking and low flowback efficiency still exist in the actual application process of using the existing carrying fluid. The fracturing mode of carrying sand by using clean water can fundamentally solve the problems of large environmental pollution, incomplete gel breaking and low flowback rate, but the sand carrying by using clean water has an inevitable defect of high pumping friction resistance, and the high pumping friction resistance brings great difficulty to construction operation.
Disclosure of Invention
The invention aims to provide a preparation method of a tectorial membrane proppant for fracturing, and the prepared tectorial membrane proppant for fracturing can solve the problem of high friction resistance of a clear water sand-carrying pump.
In order to achieve the purpose, the basic scheme of the invention is as follows: a preparation method of a tectorial membrane proppant for fracturing comprises the following steps:
(1) the following raw materials were prepared: water, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, polyene amine, dimethyl diallyl ammonium chloride, an initiator and a proppant body;
(2) adding water into a reaction kettle, and heating to 65-75 ℃;
(3) stirring the materials in the reaction kettle, then sequentially adding acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, polyene amine and dimethyl diallyl ammonium chloride into the reaction kettle, and after adding the raw materials, continuing stirring for 15-20min and stopping;
(4) when the temperature of the material in the step (3) is stabilized at 65-75 ℃, continuously stirring, and adding an initiator; then stirring for 4-7min and stopping;
(5) reacting for 3.5-4.5h to obtain the drag reducer, detecting the drag reducer of the drag reducer, and discharging after the drag reducer reaches more than 25%; the drag reduction rate can not meet the requirement, and sodium hydroxide or potassium hydroxide solution with the concentration of 1.0-1.5% is added for adjustment until the drag reduction rate is qualified;
(6) and (3) mixing the drag reducer prepared in the step (5) with the proppant body according to the mass part ratio of the drag reducer to the proppant body of 0.8-1.5:100, so that the drag reducer covers the surface of the proppant body, and thus the coated proppant for fracturing is obtained.
The beneficial effect of this basic scheme lies in:
1. the film-coated propping agent for fracturing is formed by polymerizing raw materials such as acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, polyene amine, dimethyl diallyl ammonium chloride and the like to generate a drag reducer, and then covering a layer of drag reducer on the surface of a propping agent body. The raw materials for preparing the drag reducer are very detailed, and the applicant researches and discovers that the drag reducer with good fluidity and adjustable drag reduction rate can be prepared only by selecting the raw materials such as 2-acrylamide-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride and the like. Dimethyl diallyl ammonium chloride belongs to a high-charge-density cationic monomer, is copolymerized with acrylamide and 2-acrylamido-2-methylpropanesulfonic acid, and then introduces a quaternary ammonium group into the drag reducer composition, so that the drag reducer composition has extremely strong polarity and affinity to anionic substances, and the prepared drag reducer composition has good fluidity, wherein the good fluidity is a key for ensuring that the drag reducer can be successfully coated on the surface of a propping agent body, and other raw materials are adopted to replace the dimethyl diallyl ammonium chloride, so that the fluidity of the drag reducer is poor, and when the drag reducer is coated on the propping agent body, the drag reducer cannot well cover the surface of the propping agent body. The 2-acrylamide-2-methylpropanesulfonic acid is selected as one of the raw materials, which is also a key factor for preparing the drag reducer, and the drag reduction effect is realized mainly by a surfactant or a high-molecular polymer according to the drag reduction principle. Therefore, 2-acrylamide-2-methylpropanesulfonic acid is selected to be copolymerized with acrylamide, polyene amine and dimethyl diallyl ammonium chloride, sulfonic acid groups are introduced into the drag reducer composition, 1.0-1.5% of sodium hydroxide or potassium hydroxide solution is added after the polymerization reaction is finished, the sulfonic acid groups are neutralized, a polymer containing sodium sulfonate or potassium sulfonate groups is obtained, and the finally generated drag reducer is a polymer surfactant and can effectively achieve the drag reduction purpose.
2. The drag reducer prepared in the step (5) in the scheme has moderate viscosity and good fluidity, and can well cover the surface of the proppant body when the drag reducer is mixed with the proppant body, so that the tectorial membrane proppant for fracturing is formed. While existing drag reducers, such as emulsion drag reducers, are used, the drag reducers cannot be coated in the proppant bulk and the drag reducers can only be added to the carrier fluid for use.
3. The film-coated proppant for fracturing is put into clean water, the drag reducer on the surface of the film-coated proppant for fracturing can be quickly dissolved in the clean water to reduce drag of the clean water, the drag reduction rate can reach 62.8%, and the film-coated proppant has very good drag reduction performance. The drag reducer not only enables the fracturing coated proppant to have a drag reduction function, but also does not influence other properties of the fracturing coated proppant, such as density, crushing capacity, acid solubility, turbidity, suspension time and the like.
4. When the existing proppant is used for fracturing construction, a carrier fluid prepared by combining a drag reducer, water and a thickening agent such as guar gum is required, and the proppant is conveyed to an oil field by using the carrier fluid. The existing propping agent needs to be matched with carrying fluid, the using method is complex, and the field preparation process of the carrying fluid is more troublesome. When the film-coated propping agent for fracturing is used for fracturing construction, the film-coated propping agent for fracturing and clean water are directly sent into a pumping vehicle group according to a certain proportion, and the propping agent and the clean water are directly pumped into an oil field by the pumping vehicle group.
5. When the drag reducer drag reduction ratio obtained by using the raw material such as acrylamide and the like as described in the step (5) does not meet the requirement, sodium hydroxide or potassium hydroxide solution with the concentration of 1.0-1.5% is added for adjustment, so that the drag reduction ratio of the drag reducer can meet the actual requirement. Once the existing drag reducer is manufactured, the drag reducer is relatively fixed and cannot be adjusted, and once the drag reducer does not meet the requirements, the prepared drag reducer cannot be used, which causes great waste. The drag reducer in the scheme of the invention can also adjust drag reduction rate after preparation, can ensure that the drag reduction rate meets the requirement, and avoids the problem of resource waste caused by the unavailable use of the drag reducer.
Further, 760 parts of water 720, 60-80 parts of acrylamide, 70-90 parts of 2-acrylamido-2-methylpropanesulfonic acid, 20-40 parts of polyene amine, 70-90 parts of dimethyldiallylammonium chloride and 4-6 parts of an initiator.
Some of the emulsion drag reducers available today also have acrylamide as one of the starting materials, with the largest amount of acrylamide being used in addition to water. The preparation method of the drag reducer obviously reduces the dosage of acrylamide, the dosage of acrylamide in the proportion of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and dimethyl diallyl ammonium chloride is less than 1/3, and the drag reducer of the preparation method is ensured to have the required performance by controlling the type and dosage of raw materials, such as moderate viscosity, good fluidity, better coverage on the surface of the proppant body, good resistance reduction performance and the like. After long-time experiments, the inventor finds that the prepared drag reducer can be well covered on the surface of a propping agent body by controlling the dosage of the raw materials within the range, and the finally prepared coated propping agent for fracturing has better comprehensive performance.
Further, 740 parts of water, 70 parts of acrylamide, 80 parts of 2-acrylamido-2-methylpropanesulfonic acid, 30 parts of polyene amine, 80 parts of dimethyldiallylammonium chloride and 5 parts of an initiator. Long-time tests of the inventor show that the film-coated proppant for fracturing is prepared by selecting the raw materials in parts by mass, the prepared proppant is put into clean water, the clean water carries sand, the drag reduction effect is optimal, the proppant can be well suspended in the clean water, and the suspension property is also excellent.
Further, in the step (6), the mass part ratio of the drag reducer to the proppant body is 1: 100. The mass part ratio of the drag reducer to the proppant body is controlled to be 1:100, and the film coating effect is good.
Further, the polyene amine is one or more of diethylenetriamine, triethylenediamine, vinylamine, diethylenediamine and triethylenetetramine. The research of the inventor finds that the drag reducer composition prepared by selecting the polyene amine of the raw materials has better effect.
Further, the initiator is any one of ammonium persulfate, potassium persulfate and sodium persulfate. The raw materials are used as the initiator, so that the comprehensive effect is better.
Further, the proppant body is prepared from the following raw materials in parts by mass: 100 parts of aggregate, 0.5-10 parts of resin and 0.15-5 parts of curing agent.
Further, the aggregate is any one of ceramsite, quartz sand, artificial sand or reclaimed sand.
Further, the resin is any one of epoxy resin, phenolic resin, polyurethane resin and acrylic resin.
Further, the curing agent is one of amines, acid anhydrides, isocyanates and urotropin.
Further, the proppant body comprises aggregate and a coating layer wrapped outside the aggregate, wherein the coating layer is prepared from resin, a curing agent, a catalyst and an amine compound; the mass portion of the resin is 0.5-3% of the mass portion of the aggregate, and the mass portion of the catalyst is 0.1-1% of the mass portion of the resin; the mass portion of the curing agent is 40-80% of the mass portion of the polyalcohol resin.
The proppant body of this scheme of use, the proppant body is thrown into water and can form comparatively loose cotton wadding in the water and gather the form, can suspend in clear water. The film-coated propping agent for fracturing is characterized in that a layer of resistance-reducing film base material is covered on the surface of a propping agent body, the film-coated propping agent for fracturing is put into water, and the resistance-reducing film base material on the surface is rapidly dissolved in the water, so that the propping agent body can contact with the water to form loose cotton floccule aggregates without affecting the suspension property of the propping agent body. The tectorial membrane proppant for fracturing of this scheme has had good drag reduction performance and suspension performance concurrently.
Further, the resin is a polyol resin, and the equivalent weight of hydroxyl groups of the polyol resin is 60-300.
Further, the polyalcohol resin is one or more of polymers such as ethanol, ethylene glycol, propylene glycol, glycerol, propanol, etc.
Further, the curing agent is one or more of toluene diisocyanate, methylene diphenyl diisocyanate, isophorone diisocyanate and diphenylmethane diisocyanate.
Further, the mass portion of the amine compound is 1-20% of the mass portion of the resin; the amine compound is one or more of diethylenetriamine, triethylamine, ethylamine, triethylene tetramine and ethylenediamine.
Further, the catalyst is one or more of alkyl tin organometallic compounds and/or alkyl lead organometallic compounds; the organic metal compound of alkyl tin is dibutyltin dilaurate or tributyltin, and the organic metal compound of alkyl lead is tetraethyl lead or lead isooctanoate.
Detailed Description
The raw materials selected in the following examples are explained, and the preparation method of the coated proppant for fracturing is explained in detail by taking example 1 as an example, wherein example 2, example 3 and comparative examples 1 to 6 are shown in table 1, and the parts which are not shown are the same as example 1;
example 4, example 5, and comparative example 7 were determined according to the following descriptions.
The proppant body in the embodiment can be a fracturing proppant purchased in the market, and can also be a resin coated proppant prepared by utilizing aggregate, resin and a curing agent, wherein the resin used for preparing the resin coated proppant can be any one of epoxy resin, phenolic resin, polyurethane resin and acrylic resin, and when the resin is epoxy resin, the corresponding curing agent is amines and acid anhydrides; when the resin is phenolic resin, the corresponding curing agent is urotropine; when the resin is polyurethane resin or acrylic resin, the corresponding curing agent is isocyanate.
The proppant body in the embodiment can also be a proppant body prepared from aggregate and a coating layer wrapped outside the aggregate, wherein the coating layer is prepared from resin, a curing agent, a catalyst and an amine compound; the resin used here is polyol resin (one or more of polymers such as ethanol, ethylene glycol, propylene glycol, glycerol, propanol, etc.), and the curing agent is one or more of toluene diisocyanate, methylene diphenyl diisocyanate, isophorone diisocyanate, and diphenylmethane diisocyanate.
Example 1
The embodiment discloses a preparation method of a tectorial membrane proppant for fracturing, which comprises the following steps:
(1) the following raw materials were prepared: 740 parts of water, 70 parts of acrylamide, 80 parts of 2-acrylamido-2-methylpropanesulfonic acid, 30 parts of polyene amine, 80 parts of dimethyl diallyl ammonium chloride and 5 parts of an initiator; wherein the initiator is ammonium persulfate, and the polyene amine is vinylamine. In this embodiment, the proppant body is made of the following raw materials in parts by mass: 100 parts of aggregate, 5 parts of resin and 2 parts of curing agent; wherein the aggregate is 30/50 quartz sand, the resin is phenolic resin, and the curing agent is urotropine.
(2) Adding water into a reaction kettle, and heating to 70 ℃;
(3) stirring the materials in the reaction kettle, sequentially adding acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, vinylamine and dimethyldiallylammonium chloride into the reaction kettle, and after adding the raw materials, continuing stirring for 20min and stopping;
(4) after the temperature of the material obtained in the step (3) is stabilized to 70 ℃, continuously stirring, and adding ammonium persulfate; stirring for 5min and stopping;
(5) obtaining a drag reducer after 4 hours of polymerization reaction, detecting the drag reducer of the drag reducer, and discharging after the drag reducer reaches more than 25%; the drag reduction rate can not meet the requirement, and 1 percent sodium hydroxide solution is added for adjustment until the drag reduction rate is qualified;
(6) preparing a proppant body using aggregate, resin and curing agent according to existing methods; the specific process is as follows: heating the aggregate to 80-230 ℃, adding resin, curing agent for 10-20 seconds, mixing sand for 30-50 seconds, and taking out of the pot to obtain a proppant body;
(7) and (3) mixing the drag reducer prepared in the step (5) with the proppant body prepared in the step (6) according to the mass part ratio of the drag reducer to the proppant body of 1:100, so that the drag reducer covers the surface of the proppant body, and thus the coated proppant for fracturing is obtained.
TABLE 1
Example 4
Example 4 differs from example 1 in that: in this embodiment, the proppant body includes aggregate and a coating layer wrapping the aggregate, and the coating layer is prepared from resin, a curing agent, a catalyst and an amine compound. Wherein the aggregate is 30/50 quartz sand, the resin is propanol polymer, the curing agent is diphenylmethane diisocyanate, the catalyst is lead isooctanoate, and the amine compound is ethylenediamine. Wherein, 100 parts of aggregate, 2.5 parts of resin, 2 parts of curing agent, 0.02 part of catalyst and 0.3 part of amine compound;
the corresponding preparation process of the proppant body in the step (6) comprises the following steps: heating the aggregate to 95 ℃, adding the resin and the catalyst, and mixing and stirring; when the temperature is reduced to 85 ℃, adding the amine compound, stirring and mixing; when the temperature is reduced to 75 ℃, adding a curing agent, mixing and stirring; and (4) cooling to 50 ℃, taking out of the pot, and obtaining the proppant body.
Example 5
Example 5 differs from example 1 in that: in this embodiment, the proppant body includes aggregate and a coating layer wrapping the aggregate, and the coating layer is prepared from resin, a curing agent, a catalyst and an amine compound. Wherein the aggregate is 30/50 quartz sand, the resin is glycerol polymer, the curing agent is toluene diisocyanate, the catalyst is tributyltin, and the amine compound is diethylenetriamine. Wherein, 100 parts of aggregate, 3 parts of resin, 2 parts of curing agent, 0.02 part of catalyst and 0.3 part of amine compound;
the corresponding preparation process of the proppant body in the step (6) comprises the following steps: heating the aggregate to 105 ℃, adding the resin and the catalyst, and mixing and stirring; when the temperature is reduced to 95 ℃, adding the amine compound, stirring and mixing; when the temperature is reduced to 75 ℃, adding a curing agent, mixing and stirring; and (4) cooling to 50 ℃, taking out of the pot, and obtaining the proppant body.
Comparative example 7
This comparative example differs from example 1 in that: acrylamide was used instead of 2-acrylamido-2-methylpropanesulfonic acid in this comparative example.
The drag reducers and fracturing coated proppants of examples 1-5 and comparative examples 1-7 were tested to obtain the following data, as shown in table 2:
TABLE 2
(Note: the specifications in Table 2 are general specifications for drag reducers and fracturing proppants currently used.)
And (4) analyzing and concluding:
(1) as can be seen from the data in table 2, the drag reducers in examples 1 to 5 have good flowability (the product appearance is viscous and uniform liquid and is flowable), and good drag reduction performance (the drag reduction rate is all over 49%), so that the drag reducer of the scheme of the invention can better cover the surface of the proppant body, the drag reducer brings good drag reduction performance to the proppant, and the problem of high pumping friction resistance of the clear water-carried sand can be effectively solved by using the tectorial membrane proppant for fracturing of the scheme. Meanwhile, the fracture-applied film-coated proppant of examples 1-5 has better properties such as breaking rate, acid solubility and the like, and the resistance-reducing film base material not only enables the proppant to have the resistance-reducing function, but also does not affect other properties of the proppant, such as density, breaking capacity, acid solubility, turbidity, suspension time and the like.
(2) Comparing the data of example 1 with those of comparative examples 1 and 2, respectively, it can be seen from the description in table 2 that the flowability of the drag reducer of comparative examples 1 and 2 is lost and the drag reduction ratio is much lower than that of example 1, and thus it is known that increasing the amount of acrylamide decreases the flowability of the drag reducer and decreases the drag reduction ratio of the drag reducer. Comparing the data of example 1 with comparative examples 3 and 4, respectively, the drag reducing agents of comparative examples 3 and 4 have drag reducing ratios much lower than the drag reducing agent of example 1. Combining the data of comparative examples 1-4 can conclude that: the dosage and proportion of raw materials such as acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, dimethyldiallylammonium chloride and the like are required, and the proportion of raw materials such as acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, dimethyldiallylammonium chloride and the like is not in line with the requirements, so that the performances such as drag reduction rate, flowability and the like of the drag reducer are influenced.
(3) Comparing the data of example 1 with the data of comparative example 5, the drag reducer of comparative example 5 is gel and has no flowability, and thus, it is known that the use of dimethyldiallylammonium chloride as one of the raw materials is critical to improve the flowability of the drag reducer.
(4) Comparing the data of example 1 with the data of comparative example 6, the drag reduction ratio of the drag reducer of comparative example 6 is greatly reduced, and the drag reduction ratio does not reach the requirement (25%), so it is known that 2-acrylamido-2-methylpropanesulfonic acid has a great influence on the drag reduction performance of the drag reducer.
(5) Acrylamide and 2-acrylamido-2-methylpropanesulfonic acid are substances with similar properties, and are anionic monomers, and acrylamide is used to replace 2-acrylamido-2-methylpropanesulfonic acid to obtain comparative example 7. Comparing the data of example 1 with the data of comparative example 7, the drag reduction ratio of the drag reducer of comparative example 7 is greatly decreased, and thus it is understood that the selection of 2-acrylamido-2-methylpropanesulfonic acid as one of the raw materials is an important factor for improving the drag reduction performance of the drag reducer.
Claims (14)
1. A preparation method of a tectorial membrane proppant for fracturing is characterized by comprising the following steps:
(1) the following raw materials were prepared: water, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, polyene amine, dimethyl diallyl ammonium chloride, an initiator and a proppant body; 760 parts of water 720, 60-80 parts of acrylamide, 70-90 parts of 2-acrylamido-2-methylpropanesulfonic acid, 20-40 parts of polyene amine, 70-90 parts of dimethyl diallyl ammonium chloride and 4-6 parts of an initiator;
(2) adding water into a reaction kettle, and heating to 65-75 ℃;
(3) stirring the materials in the reaction kettle, then sequentially adding acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, polyene amine and dimethyl diallyl ammonium chloride into the reaction kettle, and after adding the raw materials, continuing stirring for 15-20min and stopping;
(4) when the temperature of the material in the step (3) is stabilized at 65-75 ℃, continuously stirring, and adding an initiator; then stirring for 4-7min and stopping;
(5) reacting for 3.5-4.5h to obtain the drag reducer, detecting the drag reducer of the drag reducer, and discharging after the drag reducer reaches more than 25%; the drag reduction rate can not meet the requirement, and sodium hydroxide or potassium hydroxide solution with the concentration of 1.0-1.5% is added for adjustment until the drag reduction rate is qualified;
(6) and (3) mixing the drag reducer prepared in the step (5) with the proppant body according to the mass part ratio of the drag reducer to the proppant body of 0.8-1.5:100, so that the drag reducer covers the surface of the proppant body, and thus the coated proppant for fracturing is obtained.
2. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 1, characterized in that: 740 parts of water, 70 parts of acrylamide, 80 parts of 2-acrylamido-2-methylpropanesulfonic acid, 30 parts of polyene amine, 80 parts of dimethyl diallyl ammonium chloride and 5 parts of an initiator.
3. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 1 or 2, characterized in that: in the step (6), the mass part ratio of the drag reducer to the proppant body is 1: 100.
4. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 3, characterized in that: the polyene amine is one or more of diethylenetriamine, triethylene diamine, ethylene amine, diethylene diamine and triethylene tetramine.
5. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 4, characterized in that: the initiator is any one of ammonium persulfate, potassium persulfate and sodium persulfate.
6. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 5, characterized in that: the proppant body is prepared from the following raw materials in parts by mass: 100 parts of aggregate, 0.5-10 parts of resin and 0.15-5 parts of curing agent.
7. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 6, characterized in that: the aggregate is any one of ceramsite, quartz sand, artificial sand or reclaimed sand.
8. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 7, characterized in that: the resin is any one of epoxy resin, phenolic resin, polyurethane resin and acrylic resin.
9. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 8, characterized in that: the curing agent is one of amines, acid anhydrides, isocyanates and urotropin.
10. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 5, characterized in that: the proppant body comprises aggregate and a film coating layer wrapped outside the aggregate, wherein the film coating layer is prepared from resin, a curing agent, a catalyst and an amine compound; the mass portion of the resin is 0.5-3% of the mass portion of the aggregate, and the mass portion of the catalyst is 0.1-1% of the mass portion of the resin; the mass portion of the curing agent is 40-80% of the mass portion of the polyalcohol resin.
11. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 10, characterized in that: the resin is polyalcohol resin, and the equivalent weight of hydroxyl of the polyalcohol resin is 60-300.
12. The method for preparing the tectorial membrane proppant for fracturing as claimed in claim 11, characterized in that: the curing agent is one or more of toluene diisocyanate, methylene diphenyl diisocyanate, isophorone diisocyanate and diphenylmethane diisocyanate.
13. The method for preparing the tectorial membrane proppant for fracturing as claimed in claim 12, characterized in that: the mass portion of the amine compound is 1-20% of the mass portion of the resin; the amine compound is one or more of diethylenetriamine, triethylamine, ethylamine, triethylene tetramine and ethylenediamine.
14. The preparation method of the tectorial membrane proppant for fracturing as claimed in claim 13, characterized in that: the catalyst is one or more of alkyl tin organic metal compounds and/or alkyl lead organic metal compounds; the organic metal compound of alkyl tin is dibutyltin dilaurate or tributyltin, and the organic metal compound of alkyl lead is tetraethyl lead or lead isooctanoate.
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