Pump-Out Sub


Pump-Out Sub

The WellEnTech Pump-Out Sub is a device designed to be placed at the end of a tubing string to provide a means of isolating the tubing bore from well fluids until the Pump-Out Sub is activated. The design is particularly suited to velocity strings where the production conduit is coiled tubing. The activation pressure is fully adjustable and the tool is designed so that only the application of tubing pressure will activate the tool. Alternatively a ball seat can be fitted to facilitate tubing fill when running in hole. The Pump-Out Sub can be attached directly to jointed pipe or to coiled tubing via a suitable connector. It can also be supplied with or without a catcher depending on operational requirements. A range of catcher types and styles are available. The illustrations below both show the Subs complete with Catcher, as well as a Drop Ball Pump-Out Sub and a Pump-out Plug Version.


  • Compact design
  • Dual barrier design
  • Multi-function operation
  • Maximised through bore
  • Connection to suit tool joint or coil connector
  • Velocity Strings
  • Injection operations
  • Well Kill or Stimulation applications

Prior to running in hole, the WellEnTech Pump-Out Sub is dressed with the required amount of shear screws. The Sub can then be fitted to the tubing and run in hole to the required depth. A predetermined pressure is then applied to the tubing string, resulting in the Pump Out Plug shearing and dropping into the catcher or well bore, permitting well fluid to circulate up though the tubing in the case of a velocity string application.


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