Schlumberger

Downhole Safety Valves

Pump-Through Safety Valve

The pump-through safety valve (PTSV) is a safety valve that closes in response to annulus overpressure but can be reopened by pumping down the tubing.

Pump-Through Flapper Safety Valve

The pump-through flapper safety valve (PFSV) provides a reliable means for obtaining downhole shut-in and minimizing wellbore storage during final pressure buildup. It also has the ability to pump into the formation, irrespective of tubing or annulus pressure integrity above the valve.

Single-Ball Safety Valve

The single-ball safety valve (SBSV) is a fully open downhole safety valve that is run in the open position and closes permanently when the disk is ruptured. The operator mandrel is balanced to internal pressure, and is locked in the open position to prevent premature closure.

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