... ). The surfactant used was ENORDET AOS 1618 with 1 wt% NaCl. The alkali used was Na 2 CO 3 . In the beginning of each experiment, a surfactant solution containing predetermined amounts of AOS, NaCl, and Na 2 CO 3 was prepared. Then 12.5 ml of the surfactant were put into a graduated vial. The solution was degassed...

... Abstract NaOH, which is used in traditional Alkaline/Surfactant/Polymer Flooding technique, can result in formation damage and equipment corrosion 1 , 2 . In order to replace NaOH with Na 2 CO 3 , a new type Gemini surfactant-DEDS is synthesized. Its dose is very lower than traditional...