The Praxis wire-line retrievable Pump Pro Valve (PPV-W) is typically installed on a standard lock in a ported nipple or sliding sleeve situated above an Electrical Submersible Pump (ESP) in situations where the well can flow without assistance. The PPV-W allows production to pass through the annular ports when the pump is switched off.
When the ESP is switched on, the PPV-W pilots the annular ports to the closed position. Pump discharge pressure maintains the PPV-W in this position. When the pump is switched off, the annular flow ports automatically reopen, allowing communication to the annulus. By rerouting flow around, rather than through, the ESP, significant improvements in production may be realized. When the well is no longer free flowing the PPV-W can be retrieved and replaced with an isolation sleeve. The valve can then be redressed and installed in a new well significantly reducing cost.
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