WELLBOND® (lost circulation resin)

WELLBOND® (lost circulation resin)

WELLBOND® is a lost circulation remedy technology used with the OBM.

It consists of two components:

  • WELLBOND® organic resin
  • Calcium Chloride - cross-linking agent

When lost returns occurs:

  • determine the thief zone
  • mix WELLBOND® in a mixing tank
  • set the drill pipe at the top of or opposite the loss zone
  • pump the slurry through the drill pipes (no need to change the BHA)
  • pump the buffer liquid (base oil) to prevent resin from contacting CaCl2 inside the pipes
  • make sure the slurry and CaCl2 brine are displaced from the pipes
  • close the rams, gently squeeze the slurry into the loss zone (50 psi maximum)
  • hold the squeeze pressure 1-2 hours or until it dissipates



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