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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 23, 2020 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.i8.40
pages 699-708

COMPARISON OF RESIDUAL OIL SATURATION FOR WATER AND SUPERCRITICAL CO2 FLOODING IN A LONG CORE, WITH LIVE OIL AT RESERVOIR CONDITIONS

R. Z. Moreno
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil
R. G. Santos
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil
C. Okabe
Petrobras S. A., San Paulo, Brazil
D. J. Schiozer
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil
O. V. Trevisan
Department of Petroleum Engineering, School of Mechanical Engineering, University of Campinas, Mendeleyev Street 200, Cidade Universitaria Zeferino Vaz − Barao Geraldo, Campinas − Sao Paulo, Brazil, 13083-860
E. J. Bonet
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil
S. Iatchuk
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil

Краткое описание

The measurement of residual oil saturation (ROS) is of paramount importance in predicting the expected recovery in a producing field. It is also a key factor for reservoir management and for defining possible long-term enhanced oil recovery (EOR) targets. Even though ROS has been known to depend on different factors, such dependence has not been investigated extensively in the laboratory, at reservoir conditions. This paper describes an experimental work focusing on the rock formation and conditions of a very highly productive field that is offshore Brazil. The objective was to compare the recovery efficiency between water and supercritical CO2 flooding at reservoir conditions in terms of ROS evolution. A careful program of displacement tests was conducted using long real unconsolidated porous media and live reservoir fluid at reservoir pressure and temperature. An improved version of a conventional test apparatus has been implemented successfully to allow high pressure displacements through long cores. A linear x-ray monitoring device permitted us to follow water and CO2 in situ saturations along the core. A numerical simulation study was developed to scrutinize possible effects from varying conditions. The results obtained in this work led to lower residual oil saturation in the CO2 flooding than water flooding. Experimental and numerical simulation results are compared.