Research progress on improving heat tolerates and salt resistance of polymer flooding for enhanced oil recovery
The research progress of new types for enhanced oil recovery(EOR) of heat and salt resistance polymers at home and abroad is summarized.A new method for improving heat tolerates and salt resistance of poly-acrylamide polymers is proposed as developing an inexpensive and efficient divalent metal ion complexing agent.The mechanism of divalent metal ion complexing agent is analyzed and the further study direction is put forward.