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Colloids Interfaces 2018, 2(2), 16; doi:10.3390/colloids2020016

Interfacial Chemistry in Steam-Based Thermal Recovery of Oil Sands Bitumen with Emphasis on Steam-Assisted Gravity Drainage and the Role of Chemical Additives

Department of Chemistry, Centre for Petroleum and Surface Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, UK
Received: 17 February 2018 / Revised: 21 March 2018 / Accepted: 26 March 2018 / Published: 29 March 2018
(This article belongs to the Special Issue Colloids and Interfaces in Oil Recovery)
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Abstract

In this article, the importance of colloids and interfaces in thermal heavy oil or bitumen extraction methods is reviewed, with particular relevance to oil sands. It begins with a brief introduction to the chemical composition and surface chemistry of oil sands, as well as steam-based thermal recovery methods. This is followed by the specific consideration of steam-assisted gravity drainage (SAGD) from the perspective of the interfacial chemistry involved and factors responsible for the displacement of bitumen from reservoir mineral surfaces. Finally, the roles of the different chemical additives proposed to improve thermal recovery are considered in terms of their contributions to recovery mechanisms from interfacial and colloidal perspectives. Where appropriate, unpublished results from the author’s laboratory have been used to illustrate the discussions. View Full-Text
Keywords: emulsions; heavy oil and bitumen; interfaces; oil sands; petroleum colloids; SAGD; surfactants; thermal recovery; wettability emulsions; heavy oil and bitumen; interfaces; oil sands; petroleum colloids; SAGD; surfactants; thermal recovery; wettability
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Taylor, S.E. Interfacial Chemistry in Steam-Based Thermal Recovery of Oil Sands Bitumen with Emphasis on Steam-Assisted Gravity Drainage and the Role of Chemical Additives. Colloids Interfaces 2018, 2, 16.

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