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Tan J.,Petrochina | Tan J.,Research Institute of Low Perminatly Field Exploration and Development | Li X.,Petrochina | Li X.,Research Institute of Low Perminatly Field Exploration and Development | And 5 more authors.
Speciality Petrochemicals | Year: 2012

In order to develop a hydrophobically associating polyacrylamide oil-displacing agent, hydrophobically associating polyacrylamide (PAMBA) modified with long chain fat was prepared by free radical copolymerization with octadecyl acrylate (ODA) , acrylamide (AM), 2-acrylamido-2-methyl propane sulfonic acid (AMPS) , and acrylic acid (AA). Fourier transform infrared spectrometer and X-ray diffraction (XRD) were used to characterize the structure of PAMBA. The salt resistance, temperature resistance and shear resistance of PAMBA were discussed. The results show that there are strongly intermolecular hydrophobically associating interactions in the PAMBA aqueous solution; the synthetic hydrophobically associating polyacrylamide (PAMBA) has good salt resistance. Compared with unmodified PAM, PAMBA maintains higher apparent viscosity at 60 °C, and the temperature resistance and shear resistance of PAMBA is improved appreciably. Source

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