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Petroleum Reservoir Engineering Practice by Nnaemeka Ezekwe

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Chapter 17. Enhanced Oil Recovery

17.1 Introduction

Enhanced oil recovery (EOR) is sometimes called tertiary oil recovery or improved oil recovery. In this book, EOR processes are defined to include all processes that increase oil recovery beyond primary or secondary recovery processes. This definition was broadened to include EOR processes that have been used to improve oil recovery beyond the primary stage of reservoir depletion, such as steam flooding, or at the end of secondary recovery processes that involve waterflooding. This definition of EOR processes might appear to be in conflict with the inclusion of immiscible gasflooding as a secondary recovery process in Chapter 16. Immiscible gasflooding was presented in Chapter 16 as a matter ...

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