This article is protected by copyright. All rights reserved Article Laboratory Investigation of Oil Viscosity Effect During Carbonated Water Injection: Comparison of Secondary and Tertiary Recovery † Mohammad Javad Shokri Afra 1 , Mohsen Bahaloo Horeh 1 , Behzad Rostami 1,* , Hamidreza Norouzi 1 1 Institute of Petroleum Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran * Corresponding author: Behzad Rostami, Associate professor in Petroleum Engineering Postal address: Institute of Petroleum Engineering-College of Engineering-University of Tehran -North Kargar St.-Tehran- Iran- P.O Box: 113654563 Email address: brostami@ut.ac.ir Phone number: + 989125210473, +982161114736 † This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: [10.1002/cjce.23097] Received 28 May 2017; Revised 25 October 2017; Accepted 26 October 2017 The Canadian Journal of Chemical Engineering This article is protected by copyright. All rights reserved DOI 10.1002/cjce.23097