High-elasticity and high-toughness gel micro-nano particle and preparation method thereof

A micro-nano-particle and high-toughness technology, applied in the field of high-elasticity and high-toughness gel micro-nano particles and their preparation, can solve the problems of low mechanical strength of the gel system, poor ability to control cracks, poor stability, etc., and achieve mechanical strength. Low, the inhibition stability is poor, the operation is feasible effect

Active Publication Date: 2020-05-08
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a high-elasticity and high-toughness gel micro-nano particle and a preparation method thereof. The high-elasticity and high-toughness gel micro-nano particle introduces nanocellulose as a rigid unit of the gel In the gel network st

Method used

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  • High-elasticity and high-toughness gel micro-nano particle and preparation method thereof
  • High-elasticity and high-toughness gel micro-nano particle and preparation method thereof
  • High-elasticity and high-toughness gel micro-nano particle and preparation method thereof

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Embodiment 1

[0026] A highly elastic and high toughness gel micro-nano particle includes the following components: 20 g of acrylamide monomer, 0.1 g of cellulose nanofibrils, 0.06 g of polyethylene glycol 400, 0.2 g of ammonium persulfate and 100 mL of deionized water.

[0027] The preparation method of the above-mentioned high elasticity and high toughness gel micro-nano particles includes the following steps:

[0028] Disperse and activate the cellulose nanofibrils at high speed for 10 minutes and place them in deionized water. Stir and mix for 20 minutes to obtain a cellulose suspension. Then add the acrylamide monomer to the cellulose suspension. After stirring for 20 minutes, add polyethylene glycol 400 , Continue to stir for 5 minutes to obtain the cellulose mixture; place the cellulose mixture in a 70℃ water bath, open the nitrogen bottle, and pour continuous nitrogen into the mixture. Under the protection of nitrogen, add ammonium persulfate at 70°C. ℃ water bath conditions, fully react...

Embodiment 2

[0030] A high-elasticity and high-toughness gel micro-nano particle comprises the following components: 20 g of acrylamide monomer, 0.1 g of cellulose nanocrystals, 0.06 g of polyethylene glycol 400, 0.2 g of ammonium persulfate and 100 mL of deionized water.

[0031] The preparation method of the above-mentioned high elasticity and high toughness gel micro-nano particles includes the following steps:

[0032] The cellulose nanocrystals were dispersed and activated at high speed for 10 minutes and then placed in deionized water, stirred and mixed for 20 minutes to obtain a cellulose suspension, and then acrylamide monomer was added to the cellulose suspension. After stirring for 20 minutes, polyethylene glycol 400 was added. Continue stirring for 5 minutes to obtain the cellulose mixture; place the cellulose mixture in a 70℃ water bath, open the nitrogen bottle, and pour continuous nitrogen into the mixture. Under nitrogen protection, add ammonium persulfate at 70℃. Under water bat...

Embodiment 3

[0034] A high-elasticity and high-toughness gel micro-nano particle includes the following components: 10g of acrylamide monomer, 0.1g of cellulose nanofibrils, 0.03g of N,N-methylenebisacrylamide, 0.1g and 100mL of ammonium persulfate Deionized water.

[0035] The preparation method of the above-mentioned high elasticity and high toughness gel micro-nano particles includes the following steps:

[0036] Disperse and activate the cellulose nanofibrils at high speed for 10 minutes and place them in deionized water. Stir and mix for 20 minutes to obtain a cellulose suspension. Then add the acrylamide monomer to the cellulose suspension. After stirring for 20 minutes, add N, N- Methyl bisacrylamide, continue to stir for 5 minutes to obtain the cellulose mixture; place the cellulose mixture in a 70℃ water bath, open the nitrogen bottle, and pour continuous nitrogen into the mixture. Under nitrogen protection, add Ammonium sulfate, fully reacted in a water bath at 70℃ under nitrogen atm...

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Abstract

The invention provides a high-elasticity and high-toughness gel micro-nano particle and a preparation method thereof. The high-elasticity and high-toughness gel micro-nano-particle is prepared from, by weight, 5 to 20 parts of a monomer, 0.05 to 0.2 part of nano-cellulose, 0.015 to 0.6 part of a cross-linking agent, 0.04 to 0.2 part of an initiator and 79 to 95 parts of deionized water. The invention further provides the preparation method of the high-elasticity and high-toughness gel micro-nano particle. The nano-cellulose is introduced into a gel network structure as a rigid unit of the gel,so the toughness of the gel is improved, and the contradiction between the elasticity and the viscosity of the gel is regulated; and the preparation process is simple and easy to operate, the cost islow, and the problems of low mechanical strength, poor stability, poor crack regulation and control capability and the like of a gel system are effectively solved.

Description

Technical field [0001] The invention belongs to the technical field of nano particles and preparation, and specifically relates to a gel micro-nano particle with high elasticity and high toughness and a preparation method thereof. Background technique [0002] Tight oil is the most realistic and potential unconventional oil and gas resource in my country, and major discoveries have been made in the continental strata of China's Ordos, Junggar, and Sichuan basins. However, compared with tight oil reservoirs in North America, most of the tight oil reservoirs in my country are continental deposits, with low formation energy, strong reservoir heterogeneity, and poor crude oil quality. The traditional fracturing development method can obtain a higher initial stage. Production, but the formation energy declines rapidly, the single well production is low and the decline rate is fast, the predicted recovery rate is generally low (5%-10%), and the development cost is high. Therefore, how ...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F283/06C08F220/56C08F220/06C08F222/38C08F220/34
CPCC08F251/02C08F283/06C08F220/56C08F222/385C08F220/34
Inventor 魏兵毛润雪惠健田庆涛蒲万芬
Owner SOUTHWEST PETROLEUM UNIV
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