Deep profile control method for fractured oil reservoir

The invention relates to a deep profile control method for a fractured oil reservoir. By the method, the recovery ratio of crude oil can be increased. Four sections of plugs are provided for plugging different types of fluid-channeling channels, wherein in the first section of plug, a high-strength solidification system is used for plugging fracture; in the second section of plug, inorganic gel is used for plugging microfracture or large pores; in the third section of plug, a water drive flow direction changing agent and weak gel are used for further filling the fracture and the pores so as to displace residual oil in the pores; and in the fourth section of plug: a strong gel YQY plugging agent is used for plugging the fracture near the wellbore. By the method, the problem that the oil well is flooded by water caused by the fracture of the fractured oil reservoir water injection well can be effectively solved; the water absorption condition of a storage layer is changed; the utilization ratio of the injected water is increased; the swept volume is enlarged; and the oil displacement efficiency is improved finally.