True Flow Products
Dual String Flow

Locate and quantify flow in dual completions

Managing the performance of dual string wells is challenging. Access below the short string is often blocked meaning that conventional diagnostics can’t reveal flow where it really matters—at the reservoir.


Dual String Flow brings all the advantages of our Total Flow product to dual string wells. It locates and quantifies reservoir flow, even at the short-string reservoir.


Delivered by our True Flow system using the Chorus (acoustic) platform and the Cascade (thermal) platform; Dual String Flow provides the clarity and insight needed to manage well system performance more effectively.


Dual String Flow is used to diagnose unexpected or undesirable well system behavior, especially in relation to the short string. It can also be used proactively to ensure the well system is working optimally.



  • Quantify flow profiles in well systems with dual completions
  • Poor production or injectivity performance
  • Unexpected change in well system performance
  • Unexpected water or gas breakthrough
  • Suspected cross-flow in wellbore or behind-casing
  • Input for recalibrating reservoir model
  • Reservoir flow assessment and characterisation


  • Understand the true sources of production and quantify flow profiles accurately
  • Know where injection fluids are going and quantify flow profiles accurately
  • Know source of gas breakthrough or unwanted production due to cross-flow and thief zones
  • Better well and reservoir management decisions, precisely targeted
  • Improve well system performance and extend productive life of asset


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