Upper Zone Natural Flow / Lower Zone ESP (Seal Bore Packer)
Upper Zone Natural Flow / Lower Zone ESP (Seal Bore Packer)

Upper Zone Natural Flow / Lower Zone ESP (Seal Bore Packer)

System 17: Dual Zone - Single ESP -Concentric Tubing Strings

Pod Bottom Crossover Assembly
  1. Tailpipe Tubing
  2. Seal Bore Packer
  3. Lower Pod Crossover Assembly
  4. Pod Casing Clamp
  5. Pod Casing
  6. ESP Gauge
  7. ESP Motor
  8. MLE Protector
  9. ESP Seal Protector
  10. ESP Pump Intake
  11. ESP Pump
  12. Discharge Pressure Sub
  13. Discharge Head
  14. FMDV
  15. Pod Hanger Assembly
  16. Offset Union
  17. Stinger
  18. Flow Crossover
  19. Outer Tubing (ESP Production From Lower Zone)
  20. Inner Tubing (Natural Flow Production From Upper Zone)

Multiple reservoirs can be produced independently in the same well bore. In cases where the upper zone can flow naturally and the lower zone requires an ESP, a dual zone completion can be used with two concentric production tubing strings.

When the distance between zones is restricted, a pod system with seal bore packer can be used.

This also allows zones to be isolated with an isolation valve to prevent communication between zones during a workover.

Flow Crossover Assembly (Independent Production To Sureface)

Advantages

  • Increased production by producing two zones independently with dissimilar productivity
  • Only need to drill one well to maximise production from both zones
  • Pod system eliminates ESP cable going past perforations
  • Seal bore packer used when distance between zones is small
  • Allows zone isolation with an isolation valve during workover to prevent zone communication

Download the Dual Zone ESP Completions Catalogue PDF