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Special Topics & Reviews in Porous Media: An International Journal
ESCI SJR: 0.277 SNIP: 0.52 CiteScore™: 1.3

ISSN Druckformat: 2151-4798
ISSN Online: 2151-562X

Special Topics & Reviews in Porous Media: An International Journal

DOI: 10.1615/SpecialTopicsRevPorousMedia.v4.i1.40
pages 33-43

EXPERIMENTAL DETERMINATION OF ABSOLUTE AND RELATIVE PERMEABILITY IN COMPOSITE CORES: EFFECT OF ORDERING

Nader Mosavat
Petroleum Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, Saskatchewan, Canada S4S 0A2
Mohammad-Reza Rasaei
Institute of Petroleum Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Iran
Farshid Torabi
Petroleum Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, SK, S4S 0A2, Canada; Department of Petroleum Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Iran

ABSTRAKT

Experimental studies and in particular core flood tests are key elements in understanding the fluid flow in porous media. To minimize capillary end effect and obtain adequate data, it is strongly suggest that core flood experiments he performed using longer core samples or composite cores. Although a number of researchers have studied different fluid flow characteristics in composite cores, more studies are still necessary to fill the knowledge gaps, particularly in areas such as the effects of individual core ordering on absolute and relative permeability values of composite cores. The aim of this study was to find the best arrangement in the composite core system, and therefore a generalized criterion, by comparing absolute and relative permeability data to the average of individual core samples. Unsteady-state, two-phase core flood tests were conducted using three different individual core samples and different arrangements of individuals in composite core, i.e., ascending, descending, and the Huppler's arrangement. Analysis of the results revealed that for both absolute and relative permeability, descending arrangement leads to the most accurate values when compared with the average absolute and relative permeability values of individual core samples. In addition, it is realized that descending arrangement gives a higher recovery factor than the other two arrangements. According to the results of this study, it is greatly recommended to stack the individual core samples in descending order to minimize the errors in experimental determination of absolute and relative permeability.


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