Author’s Accepted Manuscript Flow improvement of heavy crude oil through pipelines using surfactant extracted from soapnuts Ravindra Kumar, Shirsendu Banerjee, Ajay Mandal, Tarun Kumar Naiya PII: S0920-4105(17)30336-4 DOI: http://dx.doi.org/10.1016/j.petrol.2017.02.010 Reference: PETROL3874 To appear in: Journal of Petroleum Science and Engineering Received date: 5 January 2016 Revised date: 18 February 2017 Accepted date: 20 February 2017 Cite this article as: Ravindra Kumar, Shirsendu Banerjee, Ajay Mandal and Tarun Kumar Naiya, Flow improvement of heavy crude oil through pipelines using surfactant extracted from soapnuts, Journal of Petroleum Science and Engineering, http://dx.doi.org/10.1016/j.petrol.2017.02.010 This is a PDF file of an unedited manuscript that has been accepted fo publication. As a service to our customers we are providing this early version o the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain www.elsevier.com/locate/petrol