ACT Standing valves and companion seating nipples are normally used in intermitting or chamber lift wells at the bottom of the tubing or chamber. The seating nipple is an integral part of the tubing string. The standing valve seats on the No-Go of the seating nipple and seals in the honed bore of the nipple to prevent the fluid from flowing back into well bore when high pressure gas is injected under a slug of fluid. ACT manufactures E-3 type of standing valve, in all popular sizes. Acomplete line of seating nipples are available to accept the standing valves.
DESCRIPTION & SPECIAL FEATURES OF STANDING VALVE
The E-3 Equalizing Standing Valve has a standard fishing neck and may be equalized and retrieved by wireline. The equalizing feature allows the operator to open ports below the valve and seat without lifting the hydrostatic head. This feature in many cases eliminates the need for an operator to pull a wet string of tubing. This valve may also be used as test plug for testing tubing to check pressure leaks above the valve. Carbide balls are available for severe service in sandy wells.
The E Seating Nipples are precision nipples that contain a honed bore to accept and seal the standing valve.They are offered in a wide range of sizes compatible with the tubing string and a large selection of bores for different size standing valves.