Equalizing Dummies

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    Equalizing Dummy Valves   

BST's wireline retrievable equalizing dummies are designed to isolate communication between casing and tubing, but are also designed to equalize the casing and tubing pressure when the equalizing prong is retrieved by wireline.  These valves have two sets of packing that straddle and pack off the casing ports in the mandrel pocket, and have integral top latches.

In operation, once the equalizing dummy valve has been properly installed, a positive seal isolates communication between between casing and tubing, and the pocket seal bores are protected from erosion.  To equalize casing/tubing pressure, a wireline trip is necessary to pull the equalizing prong.  If desired, fluid can then be circulated before pulling the equalizing standing valve.  A second wireline trip is necessary to pull the valve.

EDV-1.0R is a 1" equalizing dummy valve.

EDV-1.5R is a 1" equalizing dummy valve.


 Standard 17-4 PH stainless steel material, with monel and other premium materials optional.

  Two sets of packing to straddle and pack off the casing ports.

  Each equalizing dummy has an equalizing prong.

  Casing/tubing pressure is equalized by pulling the prong by wireline with a 1" JDC pulling tool with core extension..

 Each equalizing dummy has its own, integral top latch.

  Fluid can be circulated after equalization.

  Wireline retrievable.

All products listed are currently available from BST Lift Systems.  Please contact us for details.

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Copyright 2013 BST Lift Systems Inc.
Last modified: January 07, 2020

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