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Journal of Porous Media
Impact-faktor: 1.49 5-jähriger Impact-Faktor: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

Volumes:
Volumen 22, 2019 Volumen 21, 2018 Volumen 20, 2017 Volumen 19, 2016 Volumen 18, 2015 Volumen 17, 2014 Volumen 16, 2013 Volumen 15, 2012 Volumen 14, 2011 Volumen 13, 2010 Volumen 12, 2009 Volumen 11, 2008 Volumen 10, 2007 Volumen 9, 2006 Volumen 8, 2005 Volumen 7, 2004 Volumen 6, 2003 Volumen 5, 2002 Volumen 4, 2001 Volumen 3, 2000 Volumen 2, 1999 Volumen 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i6.10
pages 489-500

Hydrocarbon Recovery from Porous Media Using Supercritical Fluid Extraction

Ali H. Al-Marzouqi
Chemical and Petroleum Engineering Department, U.A.E. University, P.O. Box 17555, Al-Ain, United Arab Emirates
Abdulrazag Y. Zekri
Chemical and Petroleum Engineering Department, U.A.E. University, P.O. Box 17555, Al-Ain, United Arab Emirates
Adel A. Azzam
Chemical and Petroleum Engineering Department, U.A.E. University, P.O. Box 17555, Al-Ain, United Arab Emirates
Ali Dowaidar
Chemical and Petroleum Engineering Department, U.A.E. University, P.O. Box 17555, Al-Ain, United Arab Emirates

ABSTRAKT

Conventional techniques of oil recovery can deliver, on average, only one-third of the crude oil present in the reservoirs while two-thirds of the oil will remain in the rock formations. With the shortage of conventional oil in the world, enhanced oil recovery processes are necessary to free more of the trapped oil from rock formations. The main objective of this project is to assess the extraction efficiency of supercritical (SC) CO2 for oil recovery from soil and rocks. Effects of temperature (40−160° C), pressure (80-350 bar), modifier (heptane, toluene), water content (0−20%), CO2 flow rate (1−5 ml/min), grain size (100−600 μm), and type (sand stone and limestone) on the extraction capacity of SC CO2 and on the composition of extracted hydrocarbons were investigated. Results showed that SC CO2 alone (at 350 bar and 160° C) is capable of extracting over 78% of the original oil present in the soil samples. The extraction efficiency of CO2 increased with pressure and either decreased with temperature (at 250 bar) or remained almost the same (at 350 bar). Chemical modification of CO2 by adding organic solvents increased the extraction efficiency. Presence of water at high concentrations (> 10%) drastically reduced the extraction efficiency.


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