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Used to prevent pressure recorders from flowing up the well during testing programs.


The No-Blow consists of 7 components:

  1. 1. Top Sub
  2. 2. Spring *
  3. 3. End Cap
  4. 4. Shaft
  5. 5. Spring Retainer *
  6. 6. Key Housing
  7. 7. Key
  8. 8. Cam


The No Blow Tool is commonly ran in conjunction with a J Unlatching Head.

Attach the No Blow Tool as well as any accessories to the toolstring and lower carefully into the wellbore to desired depth, set down on pre ran no-go and J off using a J unlatching tool. Remove toolstring from the wellbore.