Upper Zone ESP / Lower Zone Natural Flow (Seal Bore Packer Or Tubing Retrievable Packer)
System 21: Dual Zone - Single ESP -Concentric Tubing Strings
- Tailpipe Tubing
- Seal Bore Packer Or Tubing Retrievable Packer
- Pump Support Block
- ESP Gauge
- Flush Joint Bypass Tubing
- ESP Motor
- Bypass Tubing Clamp
- MLE Cable
- ESP Seal Protector
- ESP Pump Intake
- ESP Pump
- Discharge Pressure Sub
- Discharge Head
- Telescopic Swivel
- Flow Crossover
- Inner Tubing (Lower Zone Injection)
- 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.