While primary recovery relies on natural reservoir pressure and secondary recovery employs water or gas injection, EOR provides the final and most aggressive push to maximize field profitability. Surfactant flooding, a more advanced technique, reduces the surface tension between the oil and water, essentially allowing the oil to detach from the rock surface and be carried away by the water stream.
CO2 Flooding and Miscible Displacement: How CO2 Achieves Miscible Recovery
Chemical Flooding: Precision Engineering at the Molecular Level Polymer Flooding and Surfactant Systems Chemical flooding relies on the injection of specially formulated polymers or surfactants to manipulate the interaction between the oil, water, and rock. The most common method involves the injection of steam directly into the formation, which heats the oil and reduces its density and viscosity.
Enhanced oil recovery addresses this issue through thermodynamic or viscosity modification processes. This allows the oil to move more freely toward the extraction wells.
CO2 Flooding and the Science of Miscible Displacement
This miscible mix reduces the oil's viscosity dramatically and minimizes the capillary trapping that leaves oil stuck in the rock. Thermal Recovery: Using Heat to Mobilize Oil Steam Injection and In-Situ Combustion Thermal recovery is particularly effective for heavy oil reservoirs where the viscosity is so high that the oil does not flow easily.
More About What is enhanced oil recovery
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