Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

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

Journal of Porous Media

DOI: 10.1615/JPorMedia.v14.i4.80
pages 363-373

QUANTIFYING THE ROLE OF PORE GEOMETRY AND MEDIUM HETEROGENEITY ON HEAVY OIL RECOVERY DURING SOLVENT/CO-SOLVENT FLOODING INWATER-WET SYSTEMS

Ali Akbar Dehghan
Tehran Petroleum Research Center, Petroleum University of Technology, Iran; and Department of Chemical and Petroleum Engineering, University of Calgary, Canada
Riyaz Kharrat
Petroleum University of Technology, Petroleum Research Center, Tehran, Iran
Mohammad Hossein Ghazanfari
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
S. Vossoughi
Department of Chemical and Petroleum Engineering, University of Kansas, USA

Краткое описание

Porous medium characteristics (e.g., pore geometry and medium heterogeneity) as well as the chemical nature of the o-solvents crucially affect the oil displacement efficiency during solvent flooding processes. In this work, initially saturated models with heavy crude oil were used to perform a series of solvent injection experiments. Several one-quarter five-spot micromodels with pre-designed pore geometry were constructed and used. In addition, rock-look-alike flow patterns generated from thin sections of sandstone and dolomite reservoir rocks were etched onto glass plates to form micromodels mimicking the pore geometry and heterogeneity of these rocks. Four different groups of chemicals and their mixtures were used to investigate the effect of co-solvents when they were added to the main liquid hydrocarbon. Highresolution video pictures taken of the displacement process allowed microscopic analysis of the displacement mechanism at the pore level. Experimental results revealed that the displacement efficiencies of solvent mixtures greatly depend on the chemical properties of the added co-solvents. The most effective co-solvent with the greatest sweep efficiency was detected from different chemical mixtures. The experiments performed on various network patterns demonstrated that a higher coordination number along with a higher pore−throat size ratio of the flow paths improved the displacement efficiency. Media heterogeneity resulted in higher residual oil saturation by reducing the contact area, increasing the solvent bypass, and causing the oil to be trapped. The microscopic observations confirmed that the presence of connate water in strongly water-wet medium could improve the final recovery. However, the extent of this improvement greatly depends on the type of co-solvents used in the injection process.


Articles with similar content:

EXPERIMENTAL STUDY OF MISCIBLE DISPLACEMENT WITH HYDROCARBON SOLVENT IN SHALY HEAVY OIL RESERVOIRS USING FIVE-SPOT MICROMODELS: THE ROLE OF SHALE GEOMETRICAL CHARACTERISTICS
Journal of Porous Media, Vol.15, 2012, issue 5
Mohsen Masihi, Saber Mohammadi, Mohammad Hossein Ghazanfari, Riyaz Kharrat
MACROSCOPIC AND MICROSCOPIC INVESTIGATION OF ALKALINE−SURFACTANT−POLYMER FLOODING IN HEAVY OIL RECOVERY USING FIVE-SPOT MICROMODELS: THE EFFECT OF SHALE GEOMETRY AND CONNATE WATER SATURATION
Journal of Porous Media, Vol.18, 2015, issue 8
Amin Mehranfar, Davood Rashtchian, Mohsen Masihi, Mohammad Hossein Ghazanfari
EFFECT OF ORIENTATION OF STRATA ON MACROSCOPIC SWEEP EFFICIENCY OF WATER/POLYMER FLOODING IN LAYERED POROUS MEDIA
Journal of Porous Media, Vol.14, 2011, issue 9
Benyamin Yadali Jamaloei, Riyaz Kharrat, Hamid Emami-Meybodi
Dynamics of Pulsed Two-Phase Flow in Porous Media: Bead Pack and Core Plug Experiments
Journal of Porous Media, Vol.11, 2008, issue 1
Mariela Araujo Fresky , Denis Ivanov, Oneida Leon, Richard Marquez
EXPERIMENTAL INVESTIGATION OF TERTIARY OIL GRAVITY DRAINAGE IN FRACTURED POROUS MEDIA
Special Topics & Reviews in Porous Media: An International Journal, Vol.1, 2010, issue 2
Behzad Rostami, M. Rezaveisi, Shahab Ayatollahi, Riyaz Kharrat, C. Ghotbi