Enhanced Oil Recovery Techniques for Mature Oil Fields

Thesis Abstract

Abstract
This thesis explores the application of enhanced oil recovery (EOR) techniques in mature oil fields to maximize oil production. It examines the challenges faced in mature oil fields, such as declining production rates and reservoir complexity, and investigates various EOR methods that can be employed to enhance oil recovery efficiency. The study focuses on the analysis of the effectiveness of EOR techniques, including chemical, thermal, and gas injection methods, in revitalizing mature oil fields. The research methodology involves a comprehensive literature review to gather relevant data on EOR techniques and their applications in mature oil fields. Various case studies and field examples are analyzed to understand the practical implementation and outcomes of EOR projects in mature reservoirs. Additionally, reservoir simulation models are used to evaluate the impact of different EOR methods on oil recovery rates and reservoir performance. The findings of the study demonstrate that EOR techniques have the potential to significantly increase oil recovery from mature oil fields by improving sweep efficiency and displacement mechanisms. Chemical EOR methods, such as polymer flooding and surfactant injection, are found to be effective in mobilizing trapped oil in the reservoir. Thermal methods, such as steam injection and in-situ combustion, are shown to reduce oil viscosity and improve reservoir fluid mobility. Gas injection techniques, including CO2 and nitrogen injection, enhance oil displacement and improve recovery factors in mature reservoirs. The thesis concludes by summarizing the key findings and recommendations for the successful implementation of EOR techniques in mature oil fields. It highlights the importance of reservoir characterization, simulation modeling, and field testing in optimizing EOR strategies for each specific reservoir. The study emphasizes the economic and environmental benefits of EOR applications, including increased oil production, extended field life, and reduced environmental footprint. Overall, this thesis provides valuable insights into the potential of EOR techniques to revitalize mature oil fields and enhance oil recovery rates. It contributes to the existing body of knowledge on EOR applications in mature reservoirs and offers practical recommendations for the oil and gas industry to optimize production from aging fields.