A common technique used to increase oil production from aging oil fields is Enhanced oil recovery (EOR).

Enhanced oil recovery (EOR) involves using advanced techniques to extract more oil from mature fields where conventional methods (such as pumping) have become less effective. EOR methods include injecting substances like water, steam, carbon dioxide, or chemicals into the reservoir to increase pressure and reduce the viscosity of the oil, making it easier to extract. These techniques can significantly extend the life of aging oil fields and improve recovery rates, making them vital for maintaining oil production levels.