Types of Enhanced Oil Recovery Techniques
Various EOR techniques are utilized in the oil industry, including thermal, chemical, and miscible gas injection methods. a) Thermal EOR : Involves injecting steam or hot fluids into the reservoir to reduce oil viscosity, enhance mobility, and improve extraction rates. Steam flooding and in-situ combustion are common thermal EOR methods. b) Chemical EOR : Utilizes chemicals, such as polymers or surfactants, to alter the oil-water interaction and improve oil flow. This method reduces interfacial tension, increases sweep efficiency, and displaces oil trapped in small pores. c ) Miscible Gas EOR : Involves injecting gases, such as carbon dioxide or nitrogen, into the reservoir to mix with the oil and reduce its viscosity. This method improves displacement efficiency and helps recover oil from challenging reservoirs. Energy Efficiency and Environmental Benefits EOR techniques not only enhance oil recovery but also contribute to energy efficiency and environmental sus...