Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 23, 2020 Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.2019028861
pages 1323-1345

EVALUATION OF POLYMER INJECTION, NEAR-WELLBORE, AND IN-DEPTH GEL TREATMENTS IN A STRATIFIED POROUS MEDIUM

Hossein Ali Akhlaghi Amiri
Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

RESUMO

In this work, water–oil displacement in a stratified oil reservoir was studied, using field-scale numerical simulations, and the effect of polymer injection, near-wellbore and in-depth gel treatments on oil recovery enhancement were evaluated. Water channeling, i.e., the main governing phenomenon in the studied cases, was highly affected by the permeability ratio between the layers and water/oil mobility ratio; and to some extent by other parameters including crossflow between the layers, reservoir dip, vertical permeability, the relative position of the layers, and the injection flow rate. As the permeability ratio between the layers increased from 5 to 1000, or by increasing oil–water viscosity ratio from 1 to 20, the water breakthrough time was almost 10 times shorter and the oil recovery factor was approximately halved, after 3 pore volume water injection. Relative position of the high and the low-permeability layers influenced oil recovery, due to the gravity drainage effect. This effect was pronounced at lower injection flow rates. Increasing the dip angle in the up-dip reservoir resulted in higher oil recovery and sharper displacement. Injection of a polymer slug resulted in a short-term water cut reduction and a jump in oil recovery (up to 20%); however, as polymer slug was diluted and displaced by the subsequently injected water, mostly through the high-permeability layer, the long-term recovery factor approached that of the waterflooding, especially in the cases with lower oil–water viscosity ratios. Enlarging the slug size of polymer was more effective than injecting more viscous polymer. Increasing the polymer viscosity up to 50%, did not improve oil recovery factor. In the reservoir with communicating layers, in-depth gel treatment resulted in almost 5% incremental oil recovery after 5 pore volume water injection; while less than 2% recovery improvement resulted by near-wellbore treatment. It was demonstrated that increasing gel-treated length and strength are more effective than the depth of treatment, especially in the long term.


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
IMPROVEMENT OF OIL RECOVERY THROUGH A NOVEL LOW-TENSION FOAM FLOODING AFTER ENHANCED OIL RECOVERY PROCESSES
Journal of Porous Media, Vol.21, 2018, issue 3
Yunlong Xie, Zhengxin Wang, Jun Lu, Shanfa Tang, Lei Tian, Xiaopei Yang, Xiaoyang Lei
EXPERIMENTAL INVESTIGATION OF WETTABILITY EFFECT AND DRAINAGE RATE ON TERTIARY OIL RECOVERY FROM FRACTURED MEDIA
Journal of Porous Media, Vol.15, 2012, issue 12
H. K. Al-Hadrami, P. Maroufi, A. Jahanmiri, M. Escrochi, H. Rahmanifard, Shahab Ayatollahi
A COUPLED WELLBORE−RESERVOIR FLOW MODEL FOR NUMERICAL PRESSURE TRANSIENT ANALYSIS IN VERTICALLY HETEROGENEOUS RESERVOIRS
Journal of Porous Media, Vol.16, 2013, issue 5
Farhad A. Farhadpour, Kourosh Khadivi, Mohammad Soltanieh