Dongying zhaoxin company are a manufacturer of oil downhole tools , main products such as oil packer , gas seperator , torque anchor , tubing anchor , corssover , backwash valve ,elevator , centralize
1.Breif Introduction Cup packer is mainly composed of upper joint, cup and center tube. Cup packer is a kind of self-sealing packer. The pipe annulus is sealed by interference cup and casing inwall. ...
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