A kind of acrylamide series terpolymer and its preparation method and application
An acrylamide-based terpolymer, polymerization reaction technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of inability to meet the requirements of drag reduction water fracturing, poor compatibility, long dissolution time, etc. , to achieve the effects of improving inhibition and anti-filtration performance, high pump injection displacement and sand carrying, and reducing water sensitivity effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0051]
[0052]At room temperature, add 35.6g of acrylamide (AM), 55.2g of the monomer represented by formula (21) and 26g of 2-methoxyethyl acrylate into the reaction flask, add 272.5g of deionized water, and stir to make the single The body is completely dissolved and stirred evenly. Add 5.5 g of 1 wt % EDTA aqueous solution, 2.1 g of 1 wt % azobisisobutylamidine hydrochloride aqueous solution, 0.166 g of chain extender N, N'-dimethylethylenediamine, and 0.12 g of urea into the flask respectively. g, stir well to make it evenly mixed. Use 1% by weight sodium hydroxide solution to pH 7.5. The initial temperature of the system was controlled to 4°C, and after 30 minutes of nitrogen deoxygenation, 1.1 g of 1% by weight ammonium persulfate aqueous solution was added, and nitrogen deoxygenation was continued for 20 minutes. Close the reactor and keep it at 4°C. After reacting for 10 hours, raise the temperature to 20°C and react for 5 hours, then raise the temperature to 50°...
Embodiment 2
[0060]
[0061] Add 42.7g of AM, 70.7g of the monomer represented by formula (23) and 71.2g of polyethylene glycol methyl ether methacrylate (having the structure represented by formula (19), with a number average molecular weight of 475) into the reaction flask , add 550g of deionized water, stir to dissolve the monomer completely, add 4.65g of 1% by mass EDTA aqueous solution to the flask, add 1.23g of 1% by weight azobisisobutylamidine hydrochloride aqueous solution, and add chain extender Add 0.12g of N,N'-dimethylethylenediamine, add 1.13g of 0.1% sodium bisulfite solution, add 0.11g of urea, and stir well to make it evenly mixed. The initial temperature of the system was controlled to 4°C, and after 30 minutes of nitrogen deoxygenation, 1.0 g of 1% by weight ammonium persulfate aqueous solution was added and nitrogen deoxygenation was continued for 10 minutes. Seal the reactor and keep it at 2°C. After reacting for 8 hours, raise the temperature to 25°C. After reactin...
Embodiment 3
[0065]
[0066] At room temperature, 59.6g methacrylamide, 56.5g monomer represented by formula (25) and 37.5g poly(propylene glycol) methacrylate (having the structure represented by formula (20), with a number average molecular weight of 375) were added to In the reaction flask, add 235g of deionized water, stir to dissolve the monomer completely, add 7.56g of 1% by weight of EDTA aqueous solution to the flask, add 2.13g of 1% by weight of azobisisobutylamidine hydrochloride aqueous solution, add 0.01 g of chain extender N,N'-dimethylethylenediamine, 2.13 g of 0.1% by weight sodium bisulfite solution, 0.20 g of urea, and fully stirred to make the mixture uniform. The initial temperature of the system was controlled to 2°C, and after 30 minutes of nitrogen deoxygenation, 3.0 g of 1% ammonium persulfate aqueous solution was added and nitrogen deoxygenation was continued for 10 minutes. Seal the reactor and keep it at 2°C. After reacting for 8 hours, raise the temperature to...
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More