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The Model B-Tandem Tension Packer is a tension-set retrievable packer without slips. The packer is small, reasonably priced and very effective for wells where set-down weight is unavailable. It is used as an isolation packer in multiple-zone, single string water flood installations. The B-Tandem can be attained in sizes from 4-1/2 in. to 9-5/8 in., and is rated to 5,000 psi from below at temperatures up to 275°F. BENEFITS AND CHARACTERISTICS ? Compact, simple, economical packer for zone isolation ? Built-in unloader allowing fluid to bypass packing element system ? Large bore available for 7” ? Can be shearpinned in unjayed position, allowing the packer to be set without tubing rotation ? Electroless nickel plated for corrosion resistence APPLICATIONS ? Multiple-zone, single-string waterflood installations ? Wells where set-down weight is not available ? Run in tandem above any packer against which an upstrain can be Pulled OPERATION Shear screws secure the setting mechanism in either the jayed or unjayed position. If run in the jayed position, apply set-down weight to part the shear screws. Then, rotate the tubing to the left to get 1/8 turn at the tool. If run in unjayed position, the shear screws can be parted by either set-down weight or tension. With the mechanism in the unjayed position, apply enough tension to maintain 6,000 to 12,000 lb. pack-off Slack off on the tubing string to withdraw the applied tension and to equalize pressure across the packer. Then, turn rightwards 1/8 rotation at the tool. The packer is now in the retrieving position for removal from the well. MODEL B-TANDEM TENSION PACKER
