Searched for: author:"Eftekhari, A.A."
(1 - 9 of 9)
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Eftekhari, A.A. (author), Farajzadeh, R. (author), Bruining, J. (author)
We study the enhanced mass transfer of CO2 in water for a CO2 saturated layer on top of a water saturated porous medium, experimentally and theoretically. A relatively large experimental set-up with a length of 0.5 m and a diameter of 0.15 m is used in pressure decay experiments to minimize the error of pressure measurement due to temperature...
conference paper 2018
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Bobbert, F.S.L. (author), Lietaert, K. (author), Eftekhari, A.A. (author), Pouran, B. (author), Ahmadi, S.M. (author), Weinans, H.H. (author), Zadpoor, A.A. (author)
Porous biomaterials that simultaneously mimic the topological, mechanical, and mass transport properties of bone are in great demand but are rarely found in the literature. In this study, we rationally designed and additively manufactured (AM) porous metallic biomaterials based on four different types of triply periodic minimal surfaces (TPMS)...
journal article 2017
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Eftekhari, A.A. (author), Farajzadeh, R. (author)
We investigate the validity of the assumption that foam in porous media reduces the mobility of gas phase only and does not impact the liquid-phase mobility. The foam is generated by simultaneous injection of nitrogen gas and a surfactant solution into sandstone cores and its strength is varied by changing surfactant type and concentration. We...
journal article 2017
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Kapetas, L. (author), Vincent-Bonnieu, S.Y.F. (author), Danelis, S (author), Rossen, W.R. (author), Farajzadeh, R. (author), Eftekhari, A.A. (author), Mohd Shafian, SR (author), Kamarul Bahrim, RZ (author)
Foam can increase sweep efficiency within a porous medium, which is useful for oil-recovery processes[1]. The flow of foam in porous media is a complex process that depends on properties like permeability, porosity and surface chemistry, but also temperature. Although the surface activity of surfactants as a function of temperature is well...
journal article 2016
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Farajzadeh, R. (author), Lotfollahi, M. (author), Eftekhari, A.A. (author), Rossen, W.R. (author), Hirasaki, G.J.H. (author)
Accurate modeling of foam rheology on the field scale requires detailed understanding of the correlation between the fundamental properties of foam and the scalable parameters of the porous medium. It has been experimentally observed that foam experiences an abrupt coalescence when the capillary pressure in the porous medium approaches a certain...
journal article 2015
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Roebroeks, J. (author), Eftekhari, A.A. (author), Farajzadeh, R. (author), Vincent-Bonnieu, S. (author)
Foam flooding as a mechanism to enhance oil recovery has been intensively studied and is the subject of multiple research groups. However, limited stability of surfactant-generated foam in presence of oil and low chemical stability of surfactants in the high temperature and high salinity of an oil reservoir are among the reasons for foam EOR not...
conference paper 2015
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Khosrokhavar, R. (author), Eftekhari, A.A. (author), Farajzadeh, R. (author), Wolf, K.H.A.A. (author), Bruining, J. (author)
The growing concern about global warming has increased interest in improving the technology for the geological storage of CO2 in aquifers. One important aspect for aquifer storage is the rate of transfer between the overlying gas layer and the aquifer below. It is generally accepted that density driven natural convection is an important...
conference paper 2015
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Farajzadeh, R. (author), Lotfollahi, M. (author), Eftekhari, A.A. (author), Rossen, W.R. (author), Hirasaki, G.J. (author)
Accurate modelling of foam rheology on the field scale requires detailed understanding of the correlation between the fundamental properties of foam and the scalable parameters of the porous medium. It has been experimentally observed that foam experiences an abrupt coalescence when the capillary pressure in the porous medium approaches a...
conference paper 2015
document
Eftekhari, A.A. (author)
This thesis evaluates the possibility of using underground coal gasification with a low CO2 footprint. The thesis consists of two parts. In the first part, by using the concept of exergy, a framework was constructed through which the practicality (feasibility) of an energy conversion/extraction method can be systematically evaluated. This...
doctoral thesis 2013
Searched for: author:"Eftekhari, A.A."
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