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After the primary and secondary oil recoveries, a substantial amount of oil is left in the reservoir which can be recovered by tertiary methods like the Alkaline-Surfactant Flood. Reasons for having some unproduced hydrocarbon in the reservoir include and not limited to the following; forces of attraction fluid contacts, low permeability, high visc...
Context in source publication
Context 1
... EOR process must be able to mobilize the oil droplets or oil blobs and create an oil bank that can easily pass through a producing well. Figure 1 shows a typical flow chart of enhanced oil recovery processes. to 12% surfactant concentration which when combined with the cost of the surfactants themselves proved cost prohibitive. ...
