THE SINGLE-SHOT HYDROSTATIC OVERPRESSURE REVERSING VALVE MAY BE OPENED BY APPLYING INTERNAL TUBING PRESSURE.
An internal sleeve is sheared in the lower adapter to allow communication from the tubing to the annulus. The internal pressure rating must be higher than the highest expected tubing pressure at the tool. This is adjustable by adding or removing the required number of shear screws.
An internal sleeve is sheared in the lower adapter to allow communication from the tubing to the annulus. The internal pressure rating must be higher than the highest expected tubing pressure at the tool. This is adjustable by adding or removing the required number of shear screws.
