초록 ▼

A frangible sealing disk for use downhole in combination with packer components. The sealing disk is a molded ceramic disk having a circular seating face and extending centrally through a dome-shaped seal. The seal is preferred for use in combination with a packer assembly for pressure sealing the b

A frangible sealing disk for use downhole in combination with packer components. The sealing disk is a molded ceramic disk having a circular seating face and extending centrally through a dome-shaped seal. The seal is preferred for use in combination with a packer assembly for pressure sealing the borehole, either up hole or down, so that the seal may be broken away easily when it is desired to remove or reset the packer assembly.

대표청구항 ▼

[ What is claimed is:] [1.] An operative sealing combination comprising:a downhole packer assembly having packing elements set to close off a borehole annulus;a plug body secured below said packer assembly;a dome shaped ceramic seal disposed dome-down in said plug body; a second dome shaped ceramic

[ What is claimed is:] [1.] An operative sealing combination comprising:a downhole packer assembly having packing elements set to close off a borehole annulus;a plug body secured below said packer assembly;a dome shaped ceramic seal disposed dome-down in said plug body; a second dome shaped ceramic seal disposed dome-up above said dome-down dome shaped ceramic seal; andmeans secured in said plug body to retain said ceramic seals in blocking relationship to a central bore such that it is only necessary to break the ceramic seals to allow pressure relief.