Huabei Oilfield The Xiliu10Fault Block In The High-temperature Reservoir Deep Profile Technology Rescarch

In this paper, Huabei Oilfield Xiliu10block as the research object, through a large number of dala research, found that in recent years XiLiu10block deep profile control effect is worse and worse, profile control system mainly exist long-term stability is poor, weak gel strength, sealing performance is weak and so on. This is largely affected the recovery degree of crude oil.Therefore, in view of the existing problems of profile control system, this paper combined with the feature of XiLiu10fault block oil reservoir, reference a large number of domestic and foreign research status about deep profile control in high temperature reservoirs, through a large number of indoor experiments, raises the formula of profile control system study, gel strength and performance evaluation, select the suitable for XiLiu10fault block reservoir of zwitterionic weak gel combined with nanometer microspheres profile control system. And then determine the core plugging rate, the breakthrough pressure and resistance to water flushing, optimizing technological parameters of the profile, finally resolved XiLiu10profile control system long-term stability is poor, weak gel strength, sealing performance is weak and so on. Research of weak gel combined with nanometer microspheres profile control system both for not profile processing oil field is more effective to improve oil recovery, or for oil fields to further improve oil recovery after profile control is of great practical significance.This article after finished the indoor research stage of the work, to make the study more representative and practical implications, in north China, huabei oilfield XiLiu selected10block injection Wells in field test. Can be seen through the analysis of the effect measures, select the combination of profile control system good temperature resistance, and can keep the long time stability, at the same time, the optimized process parameters can make the profile control effect is more significant, obvious effects of increased oil, achieved the purpose of improving oil recovery.