Steam Injection is not a common EOR method, but rather a thermal recovery method.

The primary objective of EOR techniques is to increase oil production from existing reservoirs, thereby maximizing the recovery of hydrocarbons.

Polymer Flooding involves injecting a polymer solution into the reservoir to increase the viscosity of the injected water, improving its sweep efficiency and displacing more oil.

MEOR techniques work by injecting microorganisms that produce gases, acids, or solvents into the reservoir, which can alter the properties of the oil or reservoir rock, leading to improved oil recovery.

Gas Injection involves injecting a gas, such as carbon dioxide or nitrogen, into the reservoir to reduce the viscosity of the oil, making it easier to flow.

ASP flooding is effective in reducing the interfacial tension between oil and water, allowing for better displacement of oil from the reservoir rock.

Surfactant Flooding involves injecting a surfactant solution into the reservoir to reduce the interfacial tension between oil and water, improving oil displacement and recovery.

Steam injection is used to vaporize the oil, reducing its viscosity and making it easier to flow and recover from the reservoir.

Solvent Injection involves injecting a solvent, such as propane or butane, into the reservoir to dissolve the oil, reducing its viscosity and making it easier to recover.

Thermal EOR methods work by reducing the viscosity of the oil, making it easier to flow and recover from the reservoir.

Foam Flooding involves injecting a foam into the reservoir to improve the sweep efficiency of the injected fluid, reducing channeling and improving oil displacement.

Polymer flooding is effective in increasing the viscosity of the injected water, improving its sweep efficiency and displacing more oil.

Thermal EOR involves injecting a hot fluid, such as hot water or steam, into the reservoir to reduce the viscosity of the oil, making it easier to flow and recover.

MEOR techniques aim to produce gases, acids, or solvents through microbial activity, which can alter the properties of the oil or reservoir rock, leading to improved oil recovery.

Chemical Flooding involves injecting a mixture of water and chemicals, such as surfactants and polymers, into the reservoir to improve oil displacement by reducing interfacial tension, increasing viscosity, or altering wettability.