Float Valve Equalizing Sub

Purpose

Provides a safe means of bleeding wellbore pressure from below a retrievable float valve.

Description

The Float Valve Equalizing Sub consists of twelve main components:

1. 1. Shaft
2. 2. Top Sub
3. 3. Nut
4. 4. Male Back-up Ring
5. 5. Female Back-up Ring
6. 6. Snap Ring
7. 7. T-Handle
8. 8. O-Ring
9. 9. O-Ring
10. 10. Backup Ring
11. 11. O-Ring
12. 12. O-Ring

Application

The Float Valve Equalizing Sub is utilized at surface when there is a need to bleed the pressure from below a retrievable float valve, these are generally installed into a common profile nipple.

The Float Valve Equalizing Sub can be fitted with any number of cross over swages for the particular thread needed, once the Float Valve Equalizing Sub has been attached to the corresponded thread swage and attached to the drill string, simply screwing the shaft downward will push the float off seat and allow pressure to be bled off through a threaded port and down a hose to be vented safely away from personnel.

Precautions

Care should be taken to ensure that the Float Valve Equalizing Sub is kept in good working order and that all seals are properly maintained.