This paper concerns on experimental investigation of biopolymer/polymer flooding in fractured five-spot systems. In this study, a series of polymer injection processes were performed on five-spot glass type micromodels saturated with heavy crude oil. Seven fractured glass type micromodels were used to illustrate the effects of polymer type/concentration on oil recovery efficiency in presence of fractures with different geometrical properties (i.e., fractures orientation, length and number of fractures). Four synthetic polymers as well as a biopolymer at different levels of concentration were tested. Also a micromodel constituted from dead-end pores with various geometrical properties was designed to investigate microscopic displacement mechanisms during polymer/water flooding. The results showed that polymer flooding is more efficient by using hydrolyzed synthetic polymers with high molecular weight as well as locating injection well in a proper position respect to the fracture geometrical properties. In addition, by monitoring of microscopic efficiency, pulling, stripping, and oil thread flow mechanisms were detected and discussed. The results showed that flow rate, fluid type, polymer concentration, and geometrical properties of pores influence the efficiency of mentioned mechanisms. Furthermore, it was detected that polymer's velocity profile play a significant role on oil recovery efficiency by influencing both macroscopic and microscopic mechanisms. This study demonstrates different physical and chemical conditions that affect the efficiency of this enhanced oil recovery method.
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September 2013
Research-Article
Experimental Investigation of Microscopic/Macroscopic Efficiency of Polymer Flooding in Fractured Heavy Oil Five-Spot Systems
Mohammad Hossein Sedaghat,
Mohammad Hossein Sedaghat
1
e-mail: m.sedaghat66@gmail.com
1Corresponding author.
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Mohammad Hossein Ghazanfari,
Mohammad Hossein Ghazanfari
Chemical and Petroleum
Engineering Department,
Engineering Department,
Sharif University of Technology
,Tehran
, 11365-9465, Iran
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Mohammad Parvazdavani,
Mohammad Parvazdavani
EOR Studies Center,
Research Institute of Petroleum Institute (RIPI)
,Tehran
, 18745-4163, Iran
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Saeid Morshedi
Saeid Morshedi
Chemical and Petroleum
Engineering Department,
Engineering Department,
Sharif University of Technology
,Tehran
, 11365-9465, Iran
Search for other works by this author on:
Mohammad Hossein Sedaghat
e-mail: m.sedaghat66@gmail.com
Mohammad Hossein Ghazanfari
Chemical and Petroleum
Engineering Department,
Engineering Department,
Sharif University of Technology
,Tehran
, 11365-9465, Iran
Mohammad Parvazdavani
EOR Studies Center,
Research Institute of Petroleum Institute (RIPI)
,Tehran
, 18745-4163, Iran
Saeid Morshedi
Chemical and Petroleum
Engineering Department,
Engineering Department,
Sharif University of Technology
,Tehran
, 11365-9465, Iran
1Corresponding author.
Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received April 8, 2012; final manuscript received December 11, 2012; published online March 25, 2013. Assoc. Editor: Rainer Tamme.
J. Energy Resour. Technol. Sep 2013, 135(3): 032901 (9 pages)
Published Online: March 25, 2013
Article history
Received:
April 8, 2012
Revision Received:
December 11, 2012
Citation
Hossein Sedaghat, M., Hossein Ghazanfari, M., Parvazdavani, M., and Morshedi, S. (March 25, 2013). "Experimental Investigation of Microscopic/Macroscopic Efficiency of Polymer Flooding in Fractured Heavy Oil Five-Spot Systems." ASME. J. Energy Resour. Technol. September 2013; 135(3): 032901. https://doi.org/10.1115/1.4023171
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