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A kind of copolymerized nanocomposite material and its preparation method and application

A nano-composite material and copolymerization technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of long-term oil and gas engineering drilling and completion, and achieve good water solubility and viscosity increasing effect, high molecular weight, The effect of nano-dispersion uniformity

Active Publication Date: 2021-04-16
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a copolymerized nano-composite material and its preparation method and application, to solve the molecular structure and long-term effect of the prior art treatment agent and the drilling and completion problems caused by oil and gas engineering

Method used

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  • A kind of copolymerized nanocomposite material and its preparation method and application
  • A kind of copolymerized nanocomposite material and its preparation method and application
  • A kind of copolymerized nanocomposite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The present embodiment provides a kind of preparation method of crosslinking agent, comprises the steps:

[0070] i) Put 10 g (7.6 mmol) of industrial-grade β-cyclodextrin powder purified by three recrystallizations and vacuum-dried at 45°C for 48 hours in a 100 mL three-necked flask, and then add 50 mL of N,N- Dimethylacetamide (DMAC) purified liquid, stirred at room temperature under nitrogen protection until the solid was completely dissolved to form a mixed solution A;

[0071] ii) Add 2.14g (i.e. 15.2mmol) of 2-isocyanoethyl acrylate (AOI 2 ), stirring constantly under nitrogen atmosphere for 30min to obtain mixed solution B;

[0072] iii) Under the protection of nitrogen, add 80 μL of stannous isooctanoate purified liquid with a micro-injector, keep it at room temperature and keep stirring for 1.5 hours, then slowly raise the temperature of the reaction to 50°C, and keep this temperature for 8 hours to form a reaction liquid;

[0073] iv) Use a rotary evaporato...

Embodiment 2

[0076] The present embodiment provides a kind of preparation method of cationic surfactant butyl methacrylate cetyl ammonium bromide (DMB), comprises the steps:

[0077] a) 10.38g (ie 66mmol) of 2-(dimethylamino)ethyl methacrylate was dissolved in 100mL of absolute ethanol, and stirred continuously for 15min at a temperature of 50°C to form a reaction system;

[0078] b) Add 20.15 g (i.e. 66 mmol) of hexadecane bromide dropwise to the reaction system prepared in step a) using a constant pressure dropping funnel to form a mixed reaction system, and stir for 24 hours at a temperature of 50° C. to obtain a reaction solution ;

[0079] c) Using a rotary evaporator to concentrate the reaction solution obtained in step b) under reduced pressure, and then undergo acetone recrystallization, suction filtration, washing, and vacuum drying to obtain a snow-white powdery solid product, which is DMB.

Embodiment 3

[0081] This embodiment provides a method for preparing an inorganic nanophase, comprising the steps of:

[0082] Add 3.33g of industrial-grade montmorillonite into a 250mL three-necked flask filled with 100mL of deionized water and ultrasonically disperse it for 30 minutes, then fully stir at room temperature to disperse evenly to form a montmorillonite suspension;

[0083] 3.33 g of DMB prepared in Example 2 dissolved in 50 mL of deionized water was added dropwise to the montmorillonite suspension with a constant pressure dropping funnel, mixed evenly and heated to 50° C. and continued to stir for 24 hours to perform intercalation reaction Form an intercalation reaction system;

[0084] The intercalation reaction system was suction-filtered, washed alternately with ethanol and water three times, then dried in a vacuum oven at 50°C for 24 hours, and then pulverized, ground, and sieved to obtain an inorganic nanophase powder product, which was analyzed by X-ray (λ =0.1540nm) to ...

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Abstract

The invention discloses a copolymerized nanocomposite material, a preparation method and application thereof. The preparation method of the copolymerized nanocomposite material comprises the following steps: 1) mixing amide monomers and benzenesulfonate monomers with a solvent, adding a crosslinking agent, and stirring to obtain a comonomer reaction system; 2) adjusting step 1 ) the pH value of the obtained comonomer reaction system, and add the inorganic nanophase, stir to obtain a reactant mixed system; 3) under anaerobic conditions, mix the reactant mixed system, oxidizing agent and reducing agent obtained in step 2) After stirring for a certain period of time, the temperature is raised to carry out a copolymerization reaction to obtain a copolymerized nanocomposite material. The invention also provides a copolymerized nanocomposite material and its application. The copolymerized nanocomposite material prepared by the method of the invention is more conducive to the redispersion of the agglomerates of nanoparticles in polymers in the actual industrial application process, so that the copolymerized nanocomposite material and its preparation method can realize industrial application.

Description

technical field [0001] The invention relates to the technical field of oilfield chemical treatment agents for oil and gas engineering. More specifically, it relates to a copolymerized nanocomposite material and its preparation method and application. Background technique [0002] Drilling, completion and fracturing projects in oil and gas engineering must use viscous fluids that dissolve various treatment agents in order to meet the requirements of project quality and efficiency. In the drilling and development of oil and gas wells, the viscosity of the drilling fluid and the completion fluid is used to carry cuttings, protect the stability of the wellbore wall and balance the formation and pore pressure characteristics to build a high-quality and complete oil and gas production well, and implement oil and gas production through the completed oil and gas well Operations, oil and gas reservoir reconstruction projects or enhanced recovery measures to achieve a substantial inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L33/26C08F285/00C08F220/56C08F212/14C08F222/38C08K9/04C08K3/34C09K8/035
CPCC08F220/56C08F285/00C08K3/346C08K9/04C08K2201/011C09K8/035C08F212/14C08L51/00C08F222/385C08L33/26
Inventor 柯扬船王东银
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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