Cup packer is mainly composed of upper joint, cup and center tube.
It is a kind of selfsealing packer. The pipe annulus is sealed by
interference cup and casing inwall. On the impact of downhole
pressure difference, cup expanses to seal the annulus and it just
can bear one-way big pressure differential.
Cone cup is the main part of cup packer. It is vulcanized rubber on
the metal frame. Cup packer is used in well together with other
downhole tools. When the tool down to the designed position, it’s
sealed by compression between cup and
inwall and pressure difference. Pull the column to realize