Viscosity and retention of sulfonated polyacrylamide
Viscosity and retention of sulfonated polyacrylamide polymers at high temperature Abstract The viscosity and retention of several copolymers of acrylamide (AM) with sodium salt of 2‐acrylamido‐2‐methylpropane sulfonic acid (PAMS), and also hydrolyzed polyacrylamide (HPAM) have been studied under aerobic condition with and without the sacrificial agent, isobutyl alcohol (IBA) added at a temperature of 80°C.
The viscosity of the polymer solution at a low (near zero) shear rate, , in UTCHEM model is calculated as a function of polymer and electrolyte concentrations by using the modified Flory–Huggins model [ 32] as shown in Equation (5).
Viscosity and retention of sulfonated polyacrylamide
Abstract The viscosity and retention of several copolymers of acrylamide (AM) with sodium salt of 2‐acrylamido‐2‐methylpropane sulfonic acid (PAMS), and also hydrolyzed polyacrylamide Viscosity and retention of sulfonated polyacrylamide polymers at high temperature. Masoud Rashidi. Corresponding Author.
The viscosity at high temperature has been studied as a function of aging time, shear rate, sulfonation degree, molecular weight, and concentration of IBA. The retention in porous medium for...
A New Empirical Model for Viscosity of Sulfonated
In this study, the zero value was selected for the lower value, while 1000 had been selected as the upper value since. it would be unlikely for the viscosity of the sulfonated polyacrylamide solution to be zero and the. polymer solution viscosity to be as high as 1000 cp (mPa.s) in the selected ranges for the model.
Polymer solutions are shear thinning liquids meaning that their viscosity decreases with shear rate. In addition, polymer solutions’ viscosity changes with their concentration due to mixing with brine (dilution) and the effects of adsorption, salinity, pH, and temperature [ 27, 32 ].
Physico-Chemistry Characterization of Sulfonated
viscosity and adsorption/retention measurements of the sulfonated copolymers and HPAM. The factors which may affect the viscosity of the polymers and have been identified in this work as most likely influencing also adsorption and retention of the polymers are shear rate, polymer concentration, sulfonation degree, molecular weight, NaCl
oil recovery techniques, the efficiency of polyacrylamide is reduced for two reasons. First, the polymer is degraded in the shear flow that is most severe at the points of injection into the well; second, the polymer is irreversibly retained within the porous structure of the reservoir material.9,10 Its retention results
The performance of polymer solutions in enhanced oil
Rashidi M, Blokhus AM, Skauge A (2010) Viscosity and retention of sulfonated polyacrylamide polymers at high temperature. J Appl Polym Sci 119:3623–3629 Article
Polyacrylamide (IUPAC poly(2-propenamide) or poly(1-carbamoylethylene), abbreviated as PAM) is a polymer (-CH 2 CHCONH 2-) formed from acrylamide subunits. It can be synthesized as a simple linear-chain structure or cross-linked, typically using N,N '-methylenebisacrylamide.In the cross-linked form, the possibility of the monomer being present is reduced even further.
Physico-Chemistry Characterization of Sulfonated - CORE
The ultimate aim of this work is to develop an understanding of the sulfonated polyacrylamide copolymers with a range of different sulfonation and molecular weight at high salinity and high temperature conditions. Most of the work in this thesis deals with viscosity and adsorption/retention measurements of the sulfonated copolymers and HPAM.
Fig. 3(a) and (b) show variations in the viscosity, up to an 180-h-long ageing time (t a), when polyacrylamide was dissolved in water at different concentrations and temperatures.It is obvious that the solution viscosity has a remarkable dependence on ageing time. Initially, viscosity increases slightly up to a peak, and then a gradual decrease is followed by a steady-state value for all the
