Solution properties of hydrophobically modified polyacrylamides and their potential use for polymer flooding application
Kandile, Nadia; A. .M. Al-Sabagh; R.A. El-Ghazawy; M.R. Noor El-Din; E.A. El-Sharaky;
Abstract
We tested nine hydrophobically modified polyacrylamides with molecular weights situ ated between 1.58 and 0.89 106 g/mol for enhanced oil recovery applications. Their solution prop erties were investigated in the distilled water, brine solution, formation water and sea water. Their
critical association concentrations were determined from the relationship between their concentra tions and the corresponding apparent viscosities (gapp) at 30 C at shear rate 6 s 1
. They were
between 0.4 and 0.5 g/dl. The brine solutions of 0.5 g/dl of HM-PAMs were investigated at different
conditions regarding their apparent viscosities. Such conditions were mono and divalent cations,
temperature ranging from 30 to 90 C, the shear rate ranging from 6 to 30 s 1 and the aging time
for 45 days. The surface and interfacial tensions for the HM-PAMs were measured for concentra tion range from 0.01 to 1 g/dl brine solutions at 30 C and their emulsification efficiencies were
investigated for 7 days. The discrepancy in the properties and efficiencies of the tested copolymers
was discussed in the light of their chemical
critical association concentrations were determined from the relationship between their concentra tions and the corresponding apparent viscosities (gapp) at 30 C at shear rate 6 s 1
. They were
between 0.4 and 0.5 g/dl. The brine solutions of 0.5 g/dl of HM-PAMs were investigated at different
conditions regarding their apparent viscosities. Such conditions were mono and divalent cations,
temperature ranging from 30 to 90 C, the shear rate ranging from 6 to 30 s 1 and the aging time
for 45 days. The surface and interfacial tensions for the HM-PAMs were measured for concentra tion range from 0.01 to 1 g/dl brine solutions at 30 C and their emulsification efficiencies were
investigated for 7 days. The discrepancy in the properties and efficiencies of the tested copolymers
was discussed in the light of their chemical
Other data
| Title | Solution properties of hydrophobically modified polyacrylamides and their potential use for polymer flooding application | Authors | Kandile, Nadia ; A. .M. Al-Sabagh; R.A. El-Ghazawy; M.R. Noor El-Din; E.A. El-Sharaky | Keywords | Hydrophobic association;Critical association concen tration;Solution properties;Polymer solutions;Rheological properties | Issue Date | 2016 | Publisher | Elsevier B.V. on behalf of Egyptian Petroleum Research Institute | Journal | Egyptian Journal of Petroleum | Volume | 25 | Issue | 4 | Start page | 433 | End page | 444 | DOI | http://dx.doi.org/10.1016/j.ejpe.2015.03.014 |
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