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Energies 2010, 3(9), 1529-1575; doi:10.3390/en3091529

Review

Enhanced Oil Recovery: An Update Review

Vladimir Alvarado ^1,*  and Eduardo Manrique ²

¹ Department of Chemical and Petroleum Engineering, University of Wyoming, Department 3295, 1000 E. University Ave, Laramie, WY, USA ² TIORCO (NALCO & STEPAN Company), 2452 Trenton Way, Suite M, Denver, CO 80231, USA

* Author to whom correspondence should be addressed.

Received: 27 June 2010 / Accepted: 10 August 2010 / Published: 27 August 2010

(This article belongs to the Special Issue Oil Recovery)

Download PDF Full-Text [339 KB, uploaded 27 August 2010 14:44 CEST]

Abstract: With the decline in oil discoveries during the last decades it is believed that EOR technologies will play a key role to meet the energy demand in years to come. This paper presents a comprehensive review of EOR status and opportunities to increase final recovery factors in reservoirs ranging from extra heavy oil to gas condensate. Specifically, the paper discusses EOR status and opportunities organized by reservoir lithology (sandstone and carbonates formations and turbiditic reservoirs to a lesser extent) and offshore and onshore fields. Risk and rewards of EOR methods including growing trends in recent years such as CO₂ injection, high pressure air injection (HPAI) and chemical flooding are addressed including a brief overview of CO₂-EOR project economics.

Keywords: enhanced oil recovery; EOR; reservoir lithology; CO₂; steam injection; air injection; chemical flooding

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