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In recent years, focused on how to further improve the Class II oil layer polymer-flooding effect and the Class II oil layer polymer-flooding technology, it has been in-depth discussed by Sazhong development zone, Daqing Oilfield, which has already formed into related technologies that completely improve the recovery of Class II oil layer, nowadays which has achieved more than 8 percentage improvement of the recovery effect. Based on the existing recovery technology of Class II oil layer polymer-flooding, the further studies of this paper has led to the two kinds of influencing factors: uncontrollable factors and controllable factors affecting the recovery of Class II oil layer polymer-flooding, which gained a better understanding of the recovery technology for Class II oil layer polymer-flooding. |
