Study on adsorption behavior of dilute polymeric systems based on sulfonated polyacrylamide for improving oil recovery application

Authors

1 chemical, polymer & petrochemical technology development Division, Research Institute of Petroleum Industry, Tehran, Iran

2 Research Institute of Petroleum Industry-Tehran-Iran

3 Research Institute of petroleum Industry-Tehran-Iran

4 Arvandan Oil & Gas company, Tehran, Iran

Abstract
The adsorption of polymeric systems onto reservoir rock through altering the wettability of rock surface improves oil recovery and reduces the unwanted water production. . In this study, the adsorption behavior of dilute polymeric systems based on sulfonated polyacrylamide on the glass particles surfaces (representative of sandstone reservoirs) was investigated and the effect of this phenomenon on changing their surface properties was examined. Results show that crosslinked polymeric samples have lower adsorption on glassy surface comparing with uncrosslinked sulfonated polyacrylamide solution. Furthermore, the contact angle tests results showed that crosslinked samples change the surface property of glass particle less than sulfonated polyacrylamide solution. In addition the Langmuir isotherm model fitted the isotherm data better than the Freundlich model for these dilute polymeric systems. Furthermore, study of the thermodynamic of adsorption showed that their adsorption behavior on glassy surfaces is a spontaneous and exothermic process.

Keywords

Subjects


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