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Investigation of wettability alteration through relative permeability measurement during MEOR process: A micromodel study
, Article Journal of Petroleum Science and Engineering ; Vol. 120, issue , 2014 , p. 10-17 ; Mahmoodi, M ; Biria, D ; Ayatollahi, S ; Sharif University of Technology
Abstract
Microbial Enhanced Oil Recovery (MEOR) as a tertiary process employs microorganisms and their metabolites to reduce the residual oil saturation of the reservoir mainly through interfacial tension (IFT) reduction and wettability alteration. In spite of its great potential and the mentioned advantages, application of MEOR has been limited because of the lack of practical convincing experimental results. In this study, the effects of MEOR process on wettability changes and the reduction of residual oil saturation have been examined by providing microscopic visualization of two phase flow in transparent glass micromodels. Biosurfactant producing bacterial strain (Enterobacter cloacae) was...
Enhancement of fungal delignification of rice straw by Trichoderma viride sp. to improve its saccharification
, Article Biochemical Engineering Journal ; Volume 101 , September , 2015 , Pages 77-84 ; 1369703X (ISSN) ; Karimi, M ; Biria, D ; Kariminia, H. R ; Jeihanipour, A ; Sharif University of Technology
Elsevier
2015
Abstract
Fungal delignification can be considered as a feasible process to pre-treat lignocellulosic biomass in biofuel production, if its performance is improved in terms of efficiency thorough a few modifications. In this study, Trichoderma viride was utilized to investigate the effect of wet-milling, addition of surfactant (Tween 80) and optimization of operating factors such as temperature, biomass to liquid medium ratio and glucose concentration on biodelignification of rice straw. Next, the enzymatic hydrolysis of pretreated biomass was studied at various pretreatment times. Results revealed that the wet milling and addition of surfactant increases the lignin removal about 15% and 11%,...
Laboratory studies of MEOR in micromodel as a fractured system
, Article International Petroleum Technology Conference 2007, IPTC 2007, Dubai, 4 December 2007 through 6 December 2007 ; Volume 3 , 2007 , Pages 2057-2064 ; 9781615673360 (ISBN) ; Panahi, H ; Biria, D ; Roostaazad, R ; Haghighi, M ; Mohebbi, A ; Sharif University of Technology
2007
Abstract
Microbial enhanced oil recovery (MEOR) is receiving renewed interest worldwide in recent years as a viable method while not damaging the reservoir is proven to be remarkably effective, however to some extent costly. This method is based on microorganisms' activities to reduce residual oil of reservoirs, which is dependent on behavior of inherent microorganisms or injection of bioproduct of external microorganisms. In this work, five bacterial species were taken from MIS crude oil that is one of the aging Persian fractured reservoirs. These microorganisms are substantially strong in increasing oil recovery especially by reducing IFT and other MEOR mechanisms such as change of wettability of...
Laboratory studies of MEOR in micromodel as a fractured system
, Article Society of Petroleum Engineers Eastern Regional Meeting 2007: Unbridling Energy's Future, Lexington, KY, 17 October 2007 through 18 October 2007 ; October , 2007 , Pages 39-46 ; 9781604239362 (ISBN) ; Panahi, H ; Biria, D ; Roosta, R ; Haghighi, M ; Mohebbi, A ; Sharif University of Technology
2007
Abstract
Microbial EOR (MEOR) is receiving renewed interest worldwide. The method is based on microorganisms' activities to reduce residual oil of reservoirs, which is dependent on behavior of inherent microorganisms or injection of bioproduct of external microorganisms. Five bacterial species were taken from MIS crude oil that is one of the aging Persian fractured reservoirs. Visualization experiments were carried out to examine the behavior of MEOR in micromodels designed to resemble the fractured system: static and dynamic. A new surface sample of the MIS oil was taken at the well head and physical specifications were measured at the lab. This was fairly light oil with API gravity of 42.5. The...