Sump packer

The invention relates to a sump packer which comprises a center tube. The sump packer is characterized in that a setting locking mechanism and a suspension sealing assembly are arranged on the center tube, the setting locking mechanism comprises a pressing ring fixed to the center tube through a shear pin, the suspension sealing assembly comprises an upper slip, an upper cone, a sealing rubber cylinder component, a lower cone and a lower slip which are sequentially sleeved on the center tube, the sealing rubber cylinder component comprises a rubber cylinder, a female expansion ring, a male expansion ring and a shroud ring, the female expansion ring and the male expansion ring are symmetrically arranged on two sides of the rubber cylinder, and a supporting ring and a sealing ring are mounted between the rubber cylinder and the center tube. The sump packer has the advantages that the upper portion and the lower portion of the rubber cylinder of the packer can bear 5000Psi high pressure, the risk of setting the