The Effect of Oxygen on Viscosity of the Cross-Linking Polymer

Recently, to prohibit water cut from rising, reduce the low efficient or inefficient recycle of the injection fluid in the high permeability of the reservoir and enhance the economic benefits of the exploitation, oilfield in the east of domestic has done a series of research studies on the nature of profile modification agent and the effect of pilot test. A good effect was obtained, but there still exist some factors influencing the properties of the profile modification solution. It means that the viscosity of Cr3+, Al3+, and compound ion cross-linked polymer solution in the anaerobic and aerobic environment were studied. After the solutions were added to the bactericide, the retention effect of viscosities and the gel were studied in an anaerobic and an aerobic environment. The results showed that the viscosity of the cross-linked polymer solution prepared by the produced water in an aerobic environment was higher than that of the cross-linked polymer solution prepared by produced water in an anaerobic environment. To some extent, the viscosity of the cross-linked polymer solutions added to bactericide was improved. The cross-linked polymer solution has a good gel action in anaerobic environment.