A high temperature and salt resistant modified organic resin polymer, a preparation method and application thereof

Abstract

The application relates to a high-temperature-resistant and salt-resistant modified organic resin polymer and a preparation method and application thereof, and belongs to the field of oilfield treating agents. The high-temperature-resistant and salt-resistant modified organic resin polymer comprises the following components in parts by weight: acrylamidoethyl dimethyl benzyl ammonium chloride 18-20 parts, 2-acrylamido-2-methylpropane sulfonic acid 14-16 parts, N-phenyl acrylamide 10-14 parts, N,N'-methylene bisacrylamide 0.5-0.9 parts, azobis-dicyanopentanoic acid 0.3-0.5 parts, N-vinyl caprolactam 10-12 parts, N-(hydroxymethyl)-2-methyl-2-acrylamide 10-12 parts, dimethyl diallyl ammonium chloride 8-10 parts, modified nanoscale montmorillonite 6-8 parts, polyethylene glycol dipropylene acid ester 0.3-0.5 parts and sodium bisulfite 0.1-0.2 parts. The application solves the problem of insufficient temperature resistance and salt resistance of polymer additives in the development of complex oil and gas fields.

Description

Technical Field

[0001] This invention belongs to the field of oilfield treatment agents, specifically a high temperature and salt resistant modified organic resin polymer, its preparation method, and its application. Background Technology

[0002] In oil and gas field development, drilling fluids and fracturing fluids are key working fluids, and their performance directly affects operational efficiency, construction safety, and ultimately, oil and gas recovery. However, as oil and gas resource exploration and development gradually moves towards deep wells, ultra-deep wells, and complex formations (such as high-salinity, high-temperature, and high-pressure formations), traditional drilling fluid and fracturing fluid additives face severe challenges. Under high-temperature conditions, many polymer additives are prone to thermo-oxidative degradation, leading to molecular chain breakage and loss of their original key properties such as thickening, filtration reduction, and proppant carrying. Simultaneously, high concentrations of salt ions (such as Na+) in formation water... + Ca 2+ Mg 2+ (e.g.,) can damage the hydration film of polymer molecules, causing polymer molecular chains to curl, aggregate, or even precipitate, further weakening their performance. These problems not only increase operational difficulty and cost, but may also lead to a series of engineering problems such as wellbore instability, stuck drill bits, and reduced conductivity of fracturing fractures, thus hindering the efficient development of complex oil and gas reservoirs. Summary of the Invention

[0003] This invention provides a high temperature and salt resistance modified organic resin polymer, its preparation method, and its application, in order to overcome the deficiencies in the prior art.

[0004] This invention is achieved through the following technical solution: A high-temperature and salt-resistant modified organic resin polymer comprises the following substances in parts by weight: 18-20 parts of acrylamidoethyl dimethyl benzyl ammonium chloride, 14-16 parts of 2-acrylamido-2-methylpropanesulfonic acid, 10-14 parts of N-phenylacrylamide, 0.5-0.9 parts of N,N'-methylenebisacrylamide, 0.3-0.5 parts of azodicyanovalerate, 10-12 parts of N-vinylcaprolactam, 10-12 parts of N-(hydroxymethyl)-2-methyl-2-acrylamide, 8-10 parts of dimethyldiallylamine chloride, 6-8 parts of modified nano-sized montmorillonite, 0.3-0.5 parts of polyethylene glycol diacrylate, and 0.1-0.2 parts of sodium bisulfite.

[0005] The modified nano-sized montmorillonite of the high temperature and salt resistance modified organic resin polymer described above is prepared as follows: nano-sized montmorillonite is added to an ethanol aqueous solution and ultrasonically dispersed for 30-40 min to form a suspension. Then, 4-6% by weight of γ-(methacryloyloxy)propyltrimethoxysilane is added, and the mixture is stirred and reacted at 70-80℃ for 4-5 h. After the reaction is completed, the mixture is filtered, washed, and dried to obtain the modified nano-sized montmorillonite.

[0006] The high temperature and salt resistant modified organic resin polymer described above has an ethanol aqueous solution concentration of 90% and a mass-to-volume ratio of nano-sized montmorillonite to the ethanol aqueous solution of 1:1.3-1.5.

[0007] The modified organic resin polymer with high temperature and salt resistance as described above is wherein the modified nano-sized montmorillonite is washed with deionized water 3 to 5 times and then dried at 80 to 90°C for 40 to 60 minutes.

[0008] A method for preparing a high-temperature and salt-resistant modified organic resin polymer includes the following steps: Step 1: Weigh out the following ingredients according to the specified ratio: acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, N-phenylacrylamide, N,N'-methylenebisacrylamide, azodicyanovalerate, N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyl diallyl ammonium chloride, modified nano-sized montmorillonite, polyethylene glycol diacrylate, and sodium bisulfite. Step 2: Acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide are added to deionized water and stirred. Then, N,N'-methylenebisacrylamide and azodicyanovalerate are added to react. Step 3: N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite are added to the mixed suspension obtained in Step 2 and stirred. Then, polyethylene glycol diacrylate and sodium bisulfite are added to react. Step 4: After the reaction in Step 3 is completed, filter, wash, and dry to obtain a high temperature and salt resistant modified organic resin polymer.

[0009] In the preparation method of the high temperature and salt resistant modified organic resin polymer described above, the mass of deionized water in step two is 6-8 times the total mass of acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide.

[0010] In the preparation method of the high temperature and salt resistant modified organic resin polymer described above, in step two, acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide are added to deionized water and heated to 70-80°C. The mixture is stirred at 200-300 r / min for 25-30 min, and then N,N'-methylenebisacrylamide and azodicyanovalerate are added to continue the reaction for 4-5 h. The entire reaction is carried out in a sealed reactor and protected by nitrogen gas.

[0011] In the preparation method of the high temperature and salt resistant modified organic resin polymer described above, in step three, N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite are added to the mixed suspension obtained in step two. The mixture is stirred for 15-20 minutes at a temperature of 80-90°C and a speed of 150-250 r / min. Then, polyethylene glycol diacrylate and sodium bisulfite are added and the reaction continues for 5-6 hours. The entire reaction is carried out in a sealed reactor and protected by nitrogen gas.

[0012] In the preparation method of the high temperature and salt resistance modified organic resin polymer described above, in step four, after filtration, the polymer is washed 2-3 times with ethanol and 3-4 times with deionized water, and then dried at 80-90°C for 50-70 minutes.

[0013] An application of a high temperature and salt resistance modified organic resin polymer, wherein the high temperature and salt resistance modified organic resin polymer can be used as a drilling fluid treatment agent and fracturing fluid additive in oil and gas field development.

[0014] The advantages of this invention are: In this invention, acrylamide ethyl dimethyl benzyl ammonium chloride and dimethyl diallyl ammonium chloride are used as cationic monomers, which can endow the polymer with good charge characteristics and adsorption properties, and enhance its interaction with clay particles in drilling fluid and the surface of formation rocks. In this invention, 2-acrylamide-2-methylpropanesulfonic acid contains a strongly hydrophilic sulfonic acid group, which can enhance the polymer's hydration ability and resistance to salt contamination, and maintain good solubility and dispersibility even in high-mineralization environments. In this invention, N-phenylacrylamide and N-vinylcaprolactam improve the rigidity and thermal stability of the polymer molecular chain through the steric hindrance effect of the rigid benzene ring and the cyclic structure, effectively delaying the thermo-oxidative degradation rate at high temperature. In this invention, the hydroxymethyl group in N-(hydroxymethyl)-2-methyl-2-acrylamide can form a cross-linked structure between molecular chains, further enhancing the strength and temperature resistance of the polymer network; In this invention, the modified nano-sized montmorillonite, after being modified with γ-(methacryloyloxy)propyltrimethoxysilane, has reactive double bond groups grafted onto its surface, enabling it to undergo copolymerization with organic monomers and be uniformly dispersed in the polymer matrix. This not only utilizes the small size effect and surface effect of nanoparticles to improve the mechanical properties and thermal stability of the polymer, but also adsorbs some salt ions through its layered structure, synergistically enhancing the polymer's salt resistance. In this invention, the synergistic effect of polyethylene glycol diacrylate and N,N'-methylenebisacrylamide enables the polymer to form a moderately cross-linked three-dimensional network structure, which not only ensures its key properties such as thickening and reducing filtration loss, but also avoids the problem of poor solubility caused by excessive cross-linking. In this invention, azobiscyanopentanoic acid and sodium bisulfite can initiate monomer polymerization under relatively mild conditions, ensuring a stable reaction and improving the molecular weight and molecular weight distribution uniformity of the polymer. The synergistic effect of these components in this invention enables the high temperature and salt resistance modified organic resin polymer prepared by this invention to maintain excellent performance in high temperature and high salt environments, solving the problem of insufficient temperature and salt resistance of polymer additives in complex oil and gas field development. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the temperature resistance test results of Embodiments 1-3 of the present invention; Figure 2 This is a schematic diagram of the salt resistance test results of Examples 1-3 of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Step 1: Weigh out the following ingredients according to the specified ratio: 18 parts acrylamide ethyl dimethyl benzyl ammonium chloride, 14 parts 2-acrylamido-2-methylpropanesulfonic acid, 10 parts N-phenylacrylamide, 0.5 parts N,N'-methylenebisacrylamide, 0.3 parts azodicyanovalerate, 10 parts N-vinylcaprolactam, 10 parts N-(hydroxymethyl)-2-methyl-2-acrylamide, 8 parts dimethyl diallyl ammonium chloride, 6 parts modified nano-sized montmorillonite, 0.3 parts polyethylene glycol diacrylate, and 0.1 parts sodium bisulfite. The preparation of modified nano-sized montmorillonite is as follows: nano-sized montmorillonite is added to an ethanol aqueous solution with a concentration of 90% and a mass-to-volume ratio of nano-sized montmorillonite to ethanol aqueous solution of 1:1.3. The solution is ultrasonically dispersed for 30 min to form a suspension. Then, γ-(methacryloyloxy)propyltrimethoxysilane (4% by mass of nano-sized montmorillonite) is added, and the mixture is stirred at 70 °C for 5 h. After the reaction is completed, the mixture is filtered, washed three times with deionized water, and then dried at 80 °C for 60 min to obtain modified nano-sized montmorillonite. Step 2: Acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide were added to deionized water (the mass of deionized water was 6 times the total mass of acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide). The mixture was heated to 70°C and stirred at 200 r / min for 30 min. Then, N,N'-methylenebisacrylamide and azodicyanovalerate were added and the reaction continued for 5 h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 3: N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite were added to the mixed suspension obtained in Step 2. The mixture was stirred at 80°C and 150 r / min for 20 min. Then, polyethylene glycol diacrylate and sodium bisulfite were added and the reaction was continued for 6 h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 4: After the reaction in Step 3 is completed, filter the mixture, wash it twice with ethanol, wash it three times with deionized water, and then dry it at 80°C for 70 minutes to obtain a high temperature and salt resistant modified organic resin polymer.

[0019] Example 2 Step 1: Weigh out the following ingredients according to the specified ratio: 20 parts acrylamide ethyl dimethyl benzyl ammonium chloride, 16 parts 2-acrylamido-2-methylpropanesulfonic acid, 14 parts N-phenylacrylamide, 0.9 parts N,N'-methylenebisacrylamide, 0.5 parts azodicyanovalerate, 12 parts N-vinylcaprolactam, 12 parts N-(hydroxymethyl)-2-methyl-2-acrylamide, 10 parts dimethyl diallyl ammonium chloride, 8 parts modified nano-sized montmorillonite, 0.5 parts polyethylene glycol diacrylate, and 0.2 parts sodium bisulfite. The preparation of modified nano-sized montmorillonite is as follows: nano-sized montmorillonite is added to an ethanol aqueous solution with a concentration of 90% and a mass-to-volume ratio of nano-sized montmorillonite to ethanol aqueous solution of 1:1.5. The solution is ultrasonically dispersed for 40 min to form a suspension. Then, γ-(methacryloyloxy)propyltrimethoxysilane (6% by mass of nano-sized montmorillonite) is added, and the mixture is stirred at 80℃ for 4 h. After the reaction is completed, the mixture is filtered, washed 5 times with deionized water, and then dried at 90℃ for 40 min to obtain modified nano-sized montmorillonite. Step 2: Acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide were added to deionized water (the mass of deionized water was 8 times the total mass of acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide). The mixture was heated to 80°C and stirred at 300 r / min for 25 min. Then, N,N'-methylenebisacrylamide and azodicyanovalerate were added and the reaction continued for 4 h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 3: N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite were added to the mixed suspension obtained in Step 2. The mixture was stirred at 90°C and 250 r / min for 15 min. Then, polyethylene glycol diacrylate and sodium bisulfite were added and the reaction was continued for 5 h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 4: After the reaction in Step 3 is completed, filter the mixture, wash it three times with ethanol and four times with deionized water, and then dry it at 90°C for 50 minutes to obtain a high temperature and salt resistant modified organic resin polymer.

[0020] Example 3 Step 1: Weigh out the following ingredients according to the specified ratio: 19 parts acrylamide ethyl dimethyl benzyl ammonium chloride, 15 parts 2-acrylamido-2-methylpropanesulfonic acid, 12 parts N-phenylacrylamide, 0.7 parts N,N'-methylenebisacrylamide, 0.4 parts azodicyanovalerate, 11 parts N-vinylcaprolactam, 11 parts N-(hydroxymethyl)-2-methyl-2-acrylamide, 9 parts dimethyl diallyl ammonium chloride, 7 parts modified nano-sized montmorillonite, 0.4 parts polyethylene glycol diacrylate, and 0.2 parts sodium bisulfite. The preparation of modified nano-sized montmorillonite is as follows: nano-sized montmorillonite is added to an ethanol aqueous solution with a concentration of 90% and a mass-to-volume ratio of nano-sized montmorillonite to ethanol aqueous solution of 1:1.4. The solution is ultrasonically dispersed for 35 min to form a suspension. Then, 5% (by mass) of γ-(methacryloyloxy)propyltrimethoxysilane is added, and the mixture is stirred at 75 °C for 4.5 h. After the reaction is completed, the mixture is filtered, washed four times with deionized water, and then dried at 85 °C for 50 min to obtain modified nano-sized montmorillonite. Step 2: Acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide were added to deionized water (the mass of deionized water was 7 times the total mass of acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide). The mixture was heated to 75°C and stirred at 250 r / min for 28 min. Then, N,N'-methylenebisacrylamide and azodicyanovalerate were added and the reaction continued for 4.5 h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 3: N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite were added to the mixed suspension obtained in Step 2. The mixture was stirred at 850℃ and 200r / min for 18min. Then, polyethylene glycol diacrylate and sodium bisulfite were added and the reaction was continued for 5.5h. The entire reaction was carried out in a sealed reactor and protected by nitrogen gas. Step 4: After the reaction in Step 3 is completed, filter the mixture, wash it three times with ethanol and four times with deionized water, and then dry it at 85°C for 60 minutes to obtain a high temperature and salt resistant modified organic resin polymer.

[0021] The high temperature and salt resistance modified organic resin polymers prepared in Examples 1-3 were tested for temperature resistance (the method was to prepare a 0.5% aqueous solution of the polymer, heat-rolled at 120℃, 150℃, and 180℃ for 16 hours, and then measure the apparent viscosity retention rate) and salt resistance (the method was to add the polymer to simulated formation water with total salinity of 10000 mg / L, 50000 mg / L, and 100000 mg / L, respectively, to prepare a 5% solution, and measure its apparent viscosity at 90℃). The test results are as follows: Figure 1 and Figure 2 As shown.

[0022] Depend on Figure 1 and Figure 2 It can be seen that the high temperature and salt resistance modified organic resin polymers prepared in Examples 1-3 of the present invention still retain more than 80% of their apparent viscosity after hot rolling aging at 180°C for 16 hours, and their apparent viscosity can also reach more than 115 mPa·s under simulated conditions of total salinity of 100,000 mg / L and temperature of 90°C. This proves that the high temperature and salt resistance modified organic resin polymers prepared in the present invention have excellent high temperature stability and salt pollution resistance, and can meet the stringent performance requirements of drilling fluid treatment agents and fracturing fluid additives in complex oil and gas field development.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-temperature and salt-resistant modified organic resin polymer, characterized in that: The substance comprises the following components in parts by weight: 18-20 parts acrylamide-ethyl dimethyl benzyl ammonium chloride, 14-16 parts 2-acrylamido-2-methylpropanesulfonic acid, 10-14 parts N-phenylacrylamide, 0.5-0.9 parts N,N'-methylenebisacrylamide, 0.3-0.5 parts azodicyanovalerate, 10-12 parts N-vinylcaprolactam, 10-12 parts N-(hydroxymethyl)-2-methyl-2-acrylamide, 8-10 parts dimethyldiallylamine chloride, 6-8 parts modified nano-sized montmorillonite, 0.3-0.5 parts polyethylene glycol diacrylate, and 0.1-0.2 parts sodium bisulfite.

2. The high temperature and salt resistance modified organic resin polymer according to claim 1, characterized in that: The modified nano-sized montmorillonite is prepared as follows: nano-sized montmorillonite is added to an ethanol aqueous solution and ultrasonically dispersed for 30-40 min to form a suspension. Then, 4-6% by weight of γ-(methacryloyloxy)propyltrimethoxysilane is added, and the mixture is stirred at 70-80℃ for 4-5 h. After the reaction is completed, the mixture is filtered, washed, and dried to obtain the modified nano-sized montmorillonite.

3. The high temperature and salt resistance modified organic resin polymer according to claim 2, characterized in that: The concentration of the ethanol-water solution is 90%, and the mass-to-volume ratio of nano-sized montmorillonite to the ethanol-water solution is 1:1.3 to 1.

5.

4. The high temperature and salt resistance modified organic resin polymer according to claim 2, characterized in that: The modified nano-sized montmorillonite was washed with deionized water 3 to 5 times, and then dried at 80 to 90°C for 40 to 60 minutes.

5. A method for preparing a high-temperature and salt-resistant modified organic resin polymer, characterized in that: Includes the following steps: Step 1: Weigh out the following ingredients according to the specified ratio: acrylamide ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, N-phenylacrylamide, N,N'-methylenebisacrylamide, azodicyanovalerate, N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyl diallyl ammonium chloride, modified nano-sized montmorillonite, polyethylene glycol diacrylate, and sodium bisulfite. Step 2: Acrylamidoethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide are added to deionized water and stirred. Then, N,N'-methylenebisacrylamide and azodicyanovalerate are added to react. Step 3: N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite are added to the mixed suspension obtained in Step 2 and stirred. Then, polyethylene glycol diacrylate and sodium bisulfite are added to react. Step 4: After the reaction in Step 3 is completed, filter, wash, and dry to obtain a high temperature and salt resistant modified organic resin polymer.

6. The method for preparing a high-temperature and salt-resistant modified organic resin polymer according to claim 5, characterized in that: In step two, the mass of deionized water is 6-8 times the total mass of acrylamide-ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide.

7. The method for preparing a high-temperature and salt-resistant modified organic resin polymer according to claim 5, characterized in that: In step two, acrylamide-ethyl dimethyl benzyl ammonium chloride, 2-acrylamido-2-methylpropanesulfonic acid, and N-phenylacrylamide are added to deionized water and heated to 70-80°C. The mixture is stirred at 200-300 r / min for 25-30 min. Then, N,N'-methylenebisacrylamide and azodicyanovalerate are added and the reaction continues for 4-5 h. The entire reaction is carried out in a sealed reactor and protected by nitrogen gas.

8. The method for preparing a high-temperature and salt-resistant modified organic resin polymer according to claim 5, characterized in that: In step three, N-vinylcaprolactam, N-(hydroxymethyl)-2-methyl-2-acrylamide, dimethyldiallylamine chloride, and modified nano-sized montmorillonite are added to the mixed suspension obtained in step two. The mixture is stirred for 15-20 minutes at a temperature of 80-90°C and a speed of 150-250 r / min. Then, polyethylene glycol diacrylate and sodium bisulfite are added and the reaction continues for 5-6 hours. The entire reaction is carried out in a sealed reactor and protected by nitrogen gas.

9. The method for preparing a high-temperature and salt-resistant modified organic resin polymer according to claim 5, characterized in that: In step four, after filtration, the product is washed 2-3 times with ethanol and 3-4 times with deionized water, and then dried at 80-90°C for 50-70 minutes.

10. An application of a high-temperature and salt-resistant modified organic resin polymer, characterized in that: The aforementioned high temperature and salt resistance modified organic resin polymer can be used as a drilling fluid treatment agent and fracturing fluid additive in oil and gas field development.

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