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By certification 
RuiFeng “EP” packer is a single string, hydraulic-set, tubing-retrievable packer designed for well using ESP system. It incorporates multiple pass-through ports that can be used to accommodate an electric cable, gas vent valve, chemical injection valve, down-hole control line or other ESP accessories.
This ESP packer is installed with the completion tubing and is set by applying pressure to the tubing. A bi-directional carburized slips is utilized to hold the packer in place and minimizing the risk of casing damage. For big size EP packer, a hold down button slip will be configured to against differential pressure from below.
Retrieval is accomplished with a straight upward pull on tubing without a retrieving tool. And the shear release value can be adjusted on request at the field.
Features and Benefits
● Multiple bore for feed-through equipment
● Bi-directional Slip
● Multi durometer element package ensure pressure integrity under high or low pressure
● Add button slip design as request for big size
● No tubing movement during set
● Low setting pressure
● Straight upward pull to release.
● Field-adjustable shear release value
● Feedthroughs can be configured on request to suit application requirement
Application
● ESP Completions
● Single-String Production Well
● Shallow zone application
● Vertical or Deviated Well
http://www.ruifengpetrotech-en.com/
