Open Hole Multi Stage Stimulation
40-405 Activation Sub

Product Overview


The Activation Sub is a high performance purpose built ball activated blanking device which allows hydraulic activation of tools in the "ZONE SEEKER" multi-stage stimulation system. Once the Zone Seeker system has reached target depth and tools are ready to be set a ball is dropped from surface and circulated down to the Activation Sub. Once the ball has seated surface pressure is increased and all hydraulic set packers may be activated. At this point communication between the tubing and the annulus is closed and will remain closed until the delta port has been activated.


  • Industries shortest and slimest design ensures liner felxibility and trouble free deployment in all well profiles.
  • Compact size provides ease of handling, eliminates the need for handling joints, reduces leak paths and significantly increases rig floor safety.
  • Reliable field proven ball activation system.
  • Purpose designed for open hole multi-stage stimulation applications.
  • Composite phenolic activation balls combine high strength with low desnsity.
  • Available in corrosion resistant alloys for hostile environments.
  • Standard and premium thread connections available.
  • 10,000 psi differential pressure rating as standard.

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