Abstract
In this article, extensional rheological data of various polymer solutions, to be used in Azad Trivedi viscoelastic model (AT-VEM) for predicting the viscoelastic behavior of synthetic polymer in porous media are provided. Extensional rheology measurements are performed for different polymer solutions using Capillary breakup extensional Rheometer (CaBER) to obtain the filament diameter with respect to time. Extensional rheological parameters, such as the extensional relaxation time, maximum elongational viscosity at the critical Deborah number and strain hardening index are determined from observed filament diameter with time-based on the Upper Convected Maxwell model, the finite extensible non-linear elastic model, and the power law model.
Highlights
Extensional rheological data from ex-situ measurements for predicting porous media behaviour of the viscoelastic enhanced oil recovery (EOR) polymers
Extensional rheology measurements are performed for different polymer solutions using Capillary breakup extensional Rheometer (CaBER) to obtain the filament diameter with respect to time
Extensional rheological parameters, such as the extensional relaxation time, maximum elongational viscosity at the critical Deborah number and strain hardening index are determined from observed filament diameter with timebased on the Upper Convected Maxwell model, the finite extensible non-linear elastic model, and the power law model
Summary
HPAM 3230, HPAM 3530, HPAM 3630 and pusher 700 polymers were obtained from SNF Floerger (USA). Hengfloc 63020 and Hengfloc 63026 were obtained from Henju Beijing (China). All the polymer solutions were prepared by stirring at 200 rpm for 24 h
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