Thesis Abstract

Abstract
Enhanced Oil Recovery (EOR) techniques play a crucial role in maximizing hydrocarbon extraction from mature oilfields. This thesis presents a comprehensive comparative analysis of three prominent EOR methods chemical injection, thermal recovery, and gas injection, focusing on their effectiveness in revitalizing production from mature oilfields. The study evaluates the technical, economic, and environmental aspects of each method to provide insights into the most suitable approach for enhancing oil recovery from challenging reservoirs. The introduction highlights the significance of EOR in the oil and gas industry, emphasizing the need for sustainable and efficient methods to extract remaining reserves from mature oilfields. The background of the study provides context on the challenges faced in mature oilfield development and the potential benefits of implementing advanced EOR techniques. The problem statement identifies the limitations of conventional recovery methods and the increasing demand for innovative solutions to enhance hydrocarbon production. The objectives of the study aim to compare the performance of chemical, thermal, and gas injection methods in terms of oil recovery efficiency, production costs, and environmental impact. The scope of the study includes a detailed analysis of case studies and field applications to illustrate the practical implications of each EOR method. The significance of the study lies in its potential to guide decision-making in selecting the most suitable EOR technique for specific reservoir conditions. The literature review explores existing research and case studies on chemical, thermal, and gas injection methods in EOR applications. The analysis covers the principles, mechanisms, advantages, and limitations of each technique, providing a comprehensive overview of their implementation in mature oilfields. The research methodology outlines the approach taken to compare and evaluate the performance of EOR methods through field data analysis, simulation studies, and economic assessments. The findings from the comparative analysis reveal the strengths and weaknesses of chemical, thermal, and gas injection methods in enhancing oil recovery from mature oilfields. The discussion delves into the technical challenges, operational considerations, and economic implications associated with each EOR technique, offering insights into their applicability and effectiveness in different reservoir conditions. In conclusion, this thesis synthesizes the key findings and implications of the comparative analysis to provide recommendations for selecting the most suitable EOR method based on reservoir characteristics, economic viability, and environmental sustainability. The summary highlights the potential benefits of integrating advanced EOR techniques in mature oilfield development to optimize hydrocarbon production and maximize resource recovery while ensuring long-term sustainability in the oil and gas industry.

Thesis Overview