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- Title
AA-AM-SBMA 三元共聚物增稠剂合成及性能.
- Authors
李河金; 覃孝平; 杨辉; 韩东; 彭通; 李翠霞; 田海洋; 赵彬
- Abstract
A low damage ternary copolymer thickener AA-AM-SBMA for fracturing was synthesized by aqueous solution polymerization using acrylic acid (AA), acrylamide (AM), and amphoteric monomer methacrylethyl sulfobetaine (SBMA) as the main raw materials, with ammonium persulfate sodium bisulfite as the initiator system.The structure of AA-AM-SBMA was characterized by infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy, scanning electron microscopy, etc.The result showed that when prepared with injected water at 35 ℃, the viscosity and suspension properties of AA-AM-SBMA were comparable to those of partially hydrolyzed polyacrylamide (HPAM); when the concentration of sodium chloride in the mixing water was greater than 3 000 mg/L, AA-AM-SBMA could exhibit strong salt resistance; when the concentration of sodium chloride in the preparation water was 6 000 mg/L, the apparent viscosity of AA-AM-SBMA solution at 3 000 mg/L was 58.4% higher than that of HPAM solution under the same conditions.The degradation rate of AA-AM-SBMA at 120 ℃ for 2 h were 95.13%, which were 3.19% higher than that of HPAM under the same conditions.The results of core permeability recovery rate measurement showed that the permeability recovery rate corresponding to AA-AM-SBMA was 95.27%, 4.52% higher than that of HPAM under the same conditions, indicating that the introduction of SBMA was beneficial for reducing the damage of thickeners to core permeability.
- Publication
Applied Chemical Industry, 2024, Vol 53, Issue 4, p843
- ISSN
1671-3206
- Publication type
Article