Research And Application Of Super Gel Plugging In Deep Fractured Reservoir

Oilfield tests prove that profile control and water shutoff is still has great potential, one reason is that the low recovery degree of test area, on the other hand is due to the new breakthrough in whole block profile control and water shutoff technology in decision technique and plugging agent technology. The potential of profile control and water shutoff decreases gradually with the time of development. There are two limits in profile control and water shutoff, one is the limit on the number usage of plugging agent; the other is a limit on the mechanism of plugging agent. The performance for the development of profile control and water shutoff is the breakthrough of efforts on the two limits, including lower plugging agent cost, combination reasonable plugging agent, grasp the plugging agent injection time, extend the validity period of the plugging agent, improve the integral effect of plugging agent, develop a technology kind of using secondary oil recovery in the maximum while developing the tertiary oil recovery limited.In this paper, the author carries on the analysis of profile control effect to the West 33-23 block, completing the contrast effect of the block oil well before and after. Based on the improvement of existing super solid gel system and field application, completing the super plugging capability on fractured advantages channels, improving the use of water injection rate and the validity period of plugging, improving the flooded in reservoir water, interlayer and internal contradictions, expanding into the waves and the volume, increasing ultimate recovery.Through the research and application of this subject, the water channeling characteristics of Fuyu oilfield are fully understood, forming a comprehensive technological research report, preferably selecting with a high strength profile control system suitable for plugging in Fuyu oilfield with the dual advantage of channel reservoir.