In-situ rheology and mechanical degradation of EOR polyacrylamide solutions under moderate shear rates

Ahmed M. Mansour; Rashid S. Al-Maamari; Abdulaziz S. Al-Hashmi; Alan Zaitoun; Hamed Al-Sharji

doi:10.1016/j.petrol.2014.02.009

In-situ rheology and mechanical degradation of EOR polyacrylamide solutions under moderate shear rates

Ahmed M. Mansour, Rashid S. Al-Maamari, Abdulaziz S. Al-Hashmi, Alan Zaitoun, Hamed Al-Sharji

Petroleum and Chemical Engineering

Research output: Contribution to journal › Article

16 Citations (Scopus)

Abstract

A study of rheological behavior and mechanical degradation of hydrolyzed polyacrylamides (anionic) used in EOR/IOR applications under low-to-medium shear rates (γ-1) has been carried out. Aqueous polymer solutions have been injected into a core sample. Polymer degradation rate was evaluated from the flow induced viscosity loss of the polymer solution. Polymer degradation and mobility reduction were evaluated at different shear rates, salinities and concentrations. The effects of polymer viscosity, brine salinity and re-circulation of polymer effluent on degradation were investigated. The experiments revealed that polymer degradation in cores is low (

Original language	English
Pages (from-to)	57-65
Number of pages	9
Journal	Journal of Petroleum Science and Engineering
Volume	115
DOIs	https://doi.org/10.1016/j.petrol.2014.02.009
Publication status	Published - 2014

Keywords

Adsorption
HPAM
Mechanical degradation
Mobility reduction
Permeability reduction

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Fuel Technology

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10.1016/j.petrol.2014.02.009

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Mansour, A. M., Al-Maamari, R. S., Al-Hashmi, A. S., Zaitoun, A., & Al-Sharji, H. (2014). In-situ rheology and mechanical degradation of EOR polyacrylamide solutions under moderate shear rates. Journal of Petroleum Science and Engineering, 115, 57-65. https://doi.org/10.1016/j.petrol.2014.02.009

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abstract = "A study of rheological behavior and mechanical degradation of hydrolyzed polyacrylamides (anionic) used in EOR/IOR applications under low-to-medium shear rates (γ-1) has been carried out. Aqueous polymer solutions have been injected into a core sample. Polymer degradation rate was evaluated from the flow induced viscosity loss of the polymer solution. Polymer degradation and mobility reduction were evaluated at different shear rates, salinities and concentrations. The effects of polymer viscosity, brine salinity and re-circulation of polymer effluent on degradation were investigated. The experiments revealed that polymer degradation in cores is low (",

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AU - Zaitoun, Alan

AU - Al-Sharji, Hamed

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KW - Mechanical degradation

KW - Mobility reduction

KW - Permeability reduction

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