+ PCP AUTO FLOW VALVE - Zenith Oilfield Technology Ltd

+ PCP AUTO FLOW VALVEPROTECTION FROM DESCENDING SOLIDSThe Zenith PCP Auto Flow Valve is a development of the field-proven Auto Flow Valve (AFV)which has been successfully installed in hundreds of ESP wells worldwide. The PCP-AFV isa tubing-mounted downhole tool, installed as part of a PCP completion to protect the pumpfrom sand and debris settlement.ZENITH

ZENITH PCP AUTO FLOW VALVE (PCP-AFV)The Zenith PCP-AFV is situated above thepump. The main housing is installed on tubingalong with the PCP stator. A drop off subis mounted on the rod string which lockswithin the body of the tool when the rotor isinstalled, preventing any solids bypass fromabove to below the tool.1. 2.When the PCP is off the PCP-AFV’s annular flow ports automatically open (fig. 1), preventingpump damage from sands and debris descending into the pump — the fluid columndrains directly to the annulus.When the PCP is on the PCP-AFV automatically pilots its annular ports to the closed positionand an internal flow path opens for produced fluids.BENEFITSIncreases progressing cavity pump runlife:» Pump damage prevention on shut-down by avoiding tubing solids descending into the pumpFEATURESAllows removal and reinstallation of the rotor without pulling the valve to surfaceAllows the rotor to be spaced out in line with standard installation proceduresInterlock mechanism from the AFV ensures that side ports are fully closed before production flow path is openA single return spring operates the interlock and closes the valveDrop off sub rotationally locked within the main tool —rod string always rotates on bearing section within the drop off subZKG-0605-005_20 — Nov 2009 — © Zenith — zenithoilfield.comZenith Oilfield Technology patents pending & protected worldwide