Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Acrylamide copolymer, preparation method and application thereof

An acrylamide copolymer and acrylamide copolymerization technology, applied in the application field of acrylamide copolymer, can solve the problems of small molecular weight of the product, limitations of polymer application, cumbersome process operation, etc., and achieve high molecular weight, low residual monomer content, Good water solubility

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymers obtained by the above two methods have their own characteristics, and some properties such as temperature resistance, salt resistance, shear resistance and surface activity are indeed improved compared with traditional polyacrylamide, but the process operation is relatively It is cumbersome, and the molecular weight of the obtained product is small (no more than 20 million), which limits the application of polymers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Acrylamide copolymer, preparation method and application thereof
  • Acrylamide copolymer, preparation method and application thereof
  • Acrylamide copolymer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The present invention also provides a method for preparing an acrylamide copolymer, the preparation method comprising: polymerizing a monomer mixture in water under solution polymerization conditions and in the presence of an initiator, wherein the monomer The mixture contains monomer E, monomer F and monomer G, the monomer E is a monomer having a structure shown in formula (8), and the monomer F is a monomer having a structure shown in formula (9)-(12) At least one of the monomers of the structure, the monomer G is a monomer having a structure shown in formula (13), and the weight ratio of the monomer E, the monomer F and the monomer G is 1: 0.001-10: 0.001-10, more preferably 1: 0.01-1.5: 0.01-0.2, most preferably 1: 0.01-1: 0.01-0.1; the solution polymerization reaction conditions make the polymer obtained after the polymerization reaction The viscosity average molecular weight is 30 million-38 million, preferably 32 million-35 million,

[0039]

[0040]

[00...

Embodiment 1

[0082] This embodiment is used to illustrate the preparation method of the acrylamide copolymer provided by the present invention

[0083] Add 1000 grams of acrylamide (AM), 10 grams of 2-acrylamido-2-methylpropanesulfonic acid and 10 grams of surface-active functional monomers of the structure shown in formula (15), 4080 grams of deionized water in a beaker , under stirring, the temperature of the solution was controlled at 5°C with frozen brine, and the pH was adjusted to 7 by adding sodium hydroxide. Transfer the monomer solution to a polymerization bottle, add 10.2 mg of water-soluble azo initiator 2,2'-azobis(2-amidinopropane) dihydrochloride and 10.2 mg of amine N,N,N', For N'-tetramethylethylenediamine, deoxygenate with high-purity nitrogen gas for 0.5 hour, add 10.2 mg of sodium bisulfite and 10.2 mg of ammonium persulfate, continue nitrogen gas flow until the thermocouple in the polymerization bottle starts to heat up, and the reaction time is 8 hours. The colloid is...

Embodiment 2

[0085] This embodiment is used to illustrate the preparation method of the acrylamide copolymer provided by the present invention

[0086] Add 1000 grams of acrylamide (AM), 1000 grams of 2-acrylamido-2-methylpropanesulfonic acid and 100 grams of surface-active functional monomers of the structure shown in formula (15), 4900 grams of deionized water in a beaker , under stirring, the temperature of the solution was controlled at 15°C with frozen brine, and the pH was adjusted to 7 by adding sodium hydroxide. Transfer the monomer solution to a polymerization bottle, add 1.05 grams of water-soluble azo initiator 2,2'-azobis(2-amidinopropane) dihydrochloride and 1.05 grams of amines N,N,N', For N'-tetramethylethylenediamine, deoxygenate with high-purity nitrogen for 0.5 hour, add 1.05 grams of sodium bisulfite and 1.05 grams of ammonium persulfate, and continue to pass nitrogen until the thermocouple in the polymerization bottle starts to heat up, and the reaction time is 4 hours....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Apparent viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an acrylamide copolymer, a preparation method and an application thereof. The acrylamide copolymer includes a structure unit A, a structure unit B and a structure unit C, wherein the structure unit A having the unit represented as the formula (1), the structure unit B having at least one of the units represented as the formulas (2)-(5), and the structure unit C having the unit represented as the formula (6). Weight ratio of the structure unit A, the structure unit B to the structure unit C is 1:0.001-10:0.001-10. The viscosity average molecular weight of the acrylamide copolymer is 30 million to 38 million. The acrylamide copolymer has good water-solubility, low residual monomer content and high molecular weight; especially, under high-temperature and high-salt conditions, apparent viscosity of a solution of the acrylamide copolymer is greatly increased than that of common polyacrylamide, so that the acrylamide copolymer can be used as an oil-displacing agent in tertiary oil recovery of high-temperature and high-salt oil reservoir.

Description

technical field [0001] The invention relates to an acrylamide copolymer, a preparation method of the acrylamide copolymer, the acrylamide copolymer prepared by the method and the application of the acrylamide copolymer. Background technique [0002] Polymer flooding mainly injects a certain scale of polymer solution, increases the viscosity of the displacement fluid, and reduces the water phase permeability of the oil layer to reduce the mobility ratio and adjust the water absorption profile to achieve the purpose of increasing the volume of the displacement phase, thereby improving the recovery. Rate. [0003] As the main polymer oil displacement agent, partially hydrolyzed polyacrylamide (HPAM) has been popularized and applied on a large scale in conventional oil reservoir EOB technology, and has played an important role in stabilizing and increasing oilfield production. With the reduction of reserves in conventional oil reservoirs, the application of HPAM in high-tempera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F220/56C08F220/58C08F226/10C08F220/54C08F212/32C09K8/588
Inventor 伊卓林蔚然祝纶宇杜超刘希方昭张文龙
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com