Rheological and thermal stability of novel weak gels based on sulfonated polyacrylamide/scleroglucan/chromium triacetate |
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| Authors: | Ehsan Alvand Jamal Aalaie Mahmood Hemmati Vali Ahmad Sajjadian |
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| Affiliation: | 1. Chemicals, Polymers and Petrochemicals Technology Development Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran;2. Arvandan Oil and Gas Company, Tehran, Iran |
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| Abstract: | The present study deals with weak gels based on sulfonated polyacrylamide (SPA)/scleroglucan (SC)/Cr3+ with an exceptional thermal stability in electrolyte media. The rheological results showed that on increasing the SC concentration the shear viscosity and storage modulus of the SPA/SC/Cr3+ system were increased and the dependence of the storage modulus on frequency became weaker. The yield stress of the SPA/SC/Cr3+ system was higher than that of the corresponding SPA/SC system. The thermochemical stability increased with increasing relaxation time. The SPA/SC/Cr3+ semi‐interpenetrating network exhibited the lowest viscosity loss in electrolyte media; therefore this system may be a potential candidate for enhanced oil recovery applications. © 2016 Society of Chemical Industry |
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| Keywords: | sulfonated polyacrylamide scleroglucan chromium triacetate oil recovery weak gel thermochemical aging |
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