Foam Flooding Technology Research And The Application On The Oil Field Of He Kou Cheng Dong

Enhanced foam combination flooding is proposed based on polymer flooding, surfactant flooding and gas flooding. In this technique, polymer can enhance the stability of foam and decrease adsorption of foamer.In the paper series surfactant and polymer were evaluted for their foaming ability, and DP-4 is select4ed as a foamer system suitable toⅣreserivoir of Shengli oil field for its excellent foaming ability, foam stabilizing, salt tolerance and oil resistance. So this system can improve the conditions in interlamination and enhance the oil recovery. It could offer technical support to enhance oil recovery after the polymer flooding.Based on physical simulation, CMG software was selected to optimize such parameters, foamer concentration and gas injection method for enhanced foam flooding.Before the implementation of field experiment, one well group is selected to practise injection test for further investigating the foaming ability of DP-4 under reserivoir conditions, adjusting the project papameter and confirming the reasonable injection method.