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This document discusses enhanced oil recovery (EOR) methods that can be used to extract additional oil from reservoirs when traditional production methods become inefficient. It outlines three main EOR techniques: chemical injection, miscible displacement, and thermal recovery. Chemical and miscible displacement methods involve injecting gases or chemicals to mobilize remaining oil, while thermal recovery uses steam injection to reduce oil viscosity in heavy oil reservoirs. The overall goal of EOR is to maximize the amount of oil recovered from each reservoir or well.Read less