Study On The Application Of A New Composite Profile Control Agent In Different Reservoir

As the extension of the water flooding time, the production of the oil well has been declined,the profile control in the high water-cut stage has become an important measures in our country we can obtain the water control stability and the production potential effect after the multi-round profile control has been applied in high water-cut stageAs a strong plugging agent the modified starch has an excellent pour performance and sealing performance. The chemical and physical properties of the modified gel and polymer gel have been studied in this paper. and evaluated the injection-way injection-timing,volume and combinations.study on the static gelling properties and blocked performance of the modified starch and polymer gel The results show that compare to the polymer gel,the modified starch agent has good pour performance and sealing effect;study on the injection-timing of the profile gel,the result shows that the earlier profile control injection the effect is better;study on the volume of the profile gel the result shows that the profile effect will be better when increased the volume in every profile round;study on the influence of the different profile combination in multi-round profile control,we found that composition from strong to the weak distribution of many rounds up of profile control system,can effectively restrain the diminishing phenomenon in multi-round profile control.