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

System 21: Dual Zone - Single ESP -Concentric Tubing Strings

  1. Tailpipe Tubing
  2. Seal Bore Packer Or Tubing Retrievable Packer
  3. Spear
  4. Pump Support Block
  5. ESP Gauge
  6. Flush Joint Bypass Tubing
  7. ESP Motor
  8. Bypass Tubing Clamp
  9. MLE Cable
  10. ESP Seal Protector
  11. ESP Pump Intake
  12. ESP Pump
  13. Discharge Pressure Sub
  14. Discharge Head
  15. Telescopic Swivel
  16. Stinger
  17. Flow Crossover
  18. Inner Tubing (Lower Zone Injection)
  19. Outer Tubing (ESP Production From Upper Zone)

Multiple reservoirs can be produced independently in the same well bore.

In cases where the upper zone requires an ESP and the lower zone flows naturally, a dual zone completion can be used with two concentric production tubing strings.

A flow crossover with high strength bypass tubing is used with a pump support. Zone isolation is either with a seal bore packer or a retrievable tubing packer.

The seal bore packer allows zonal isolation during workover, where the tubing retrievable packer does not.

Advantages