By a News Reporter-Staff News Editor at Journal of Engineering -- Fresh data on Chemical Engineering are presented in a new report. According to news reporting from Edmonton, Canada, by VerticalNews journalists, research stated, "In porous media, accurate determination of petrophysical properties such as effective porosity and permeability are important to understand the porosity-permeability relationships that help in improving the oil extraction mechanisms. Measuring porosity and permeability for on-chip porous media is difficult due to their small length scales."
The news correspondents obtained a quote from the research from the University of Alberta, "Hence in the present work, we conduct experiments to calculate the effective porosity and permeability of on-chip porous media containing different pore-networks. Four different types of on-chip porous media varying in number of pore bodies and pore throats are fabricated in this work. Porosity for each on-chip porous media is determined by using image analysis technique. Absolute permeability is estimated by measuring the pressure drop across the pore network and applying Darcy's law. The pore sizes of the networks range from 40 mu m to 70 mu m and the porosity of the on-chip porous media varies from 0.39 to 0.67. The flow resistance in the networks, measured by the quantity Delta P/Q, is found to decrease with the increase in Darcy number (root K/h(2)). The permeability values range between 2.66 +/- 0.06 and 15.93 +/- 0.55 Darcy (2.625 x 10(-12) +/- 0.059 x 10(-12) and 15.72 x 10(-12) +/- 0.542 x 10(-12) M-2). It is found that as the number of pores and throats in on-chip porous media increases, the porosity increases as expected resulting in approximately one order of permeability increase."
According to the news reporters, the research concluded: "The results of this study would help in understanding the porosity and the permeability values in on-chip porous media that are miniaturized versions of oil reservoirs, which can be effective in understanding pore scale porosity-permeability relationships."
For more information on this research see: On-chip porous media: Porosity and permeability measurements. Chemical Engineering Science, 2013;99():274-283. Chemical Engineering Science can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Chemical Engineering Science - www.elsevier.com/wps/product/cws_home/215)
Our news journalists report that additional information may be obtained by contacting J. Joseph, University of Alberta, Dept. of Mech Engn, Micro & Nanoscale Transport Lab, Edmonton, AB T6G 2G8, Canada. Additional authors for this research include N.S.K. Gunda and S.K. Mitra.
Keywords for this news article include: Canada, Alberta, Edmonton, Chemical Engineering, North and Central America
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC