A-2 Series Equalizing Standing Valve for D series Landing Nipples
Applications - Flow control in single or dual completions - Packer setting tool - Tubing testing tool Benefits - Holds pressure applied above the valve and allows flow from below the valve Features: - External fishing neck - Integral equalizing device - Available in various materials - Reliable, field-proven design - Rugged construction with a large flow area
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Description
The A-2 series equalizing standing valves are slickline retrievable, ball seat type check valves with integral running and pulling necks designed to hold pressure only from above.
Operation
The A-2 equalizing standing valve is installed in the well using standard slickline methods. The appropriate JD series pulling tool and attached standing valve are lowered into the tubing until the assembly shoulders against the packing bore of the nipple. The valve packing seals in the polished section. Downward jarring
releases the JD pulling tool for retrieval to the surface.
When removing the equalizing standing valve, upward jarring with the appropriate JD series pulling tool equalizes and removes the assembly.