Experimental study of effective compounds in a smart water injection process

Abstract The process of smart water injection into carbonate reservoirs has always faced many challenges. This study attempted to investigate this issue by examining two effective factors active ionic compounds in brine and the oil phase. potential for reaction among three phases’ oil, rock, changing wettability requires presence oil. These optimal concentrations are driving force alteration process. In first step, contact angle spontaneous imbibition were performed on outcrop samples limestone core effect water. efficiency calcium divalent magnesium cations mainly depends sulfate ion concentration. However, reservoir physical condition other reactions network can be helpful determination essential ions reaction. Finally, these lead formation a stable film change which leads an increase recovery. regard, as much minimum concentration seawater have positive function acceptable compared increased seawater. cores saturated with further investigation, again, tests measuring performed. difference between rate ultimate recovery illustrates that carboxylic acid functional group original crude structure facilitate displacement oil-free components. Therefore, acidic components affect through electrostatic interaction surface minerals brine. Active act critical indicator processes.