FORTRESS Premium Isolation Valve

Suitable for deepwater and other debris-laden environments

The FORTRESS premium isolation valve is a bidirectional barrier valve that isolates reservoir fluids in the lower completion and enables operators to transition from the lower to the upper completion without intervention. It is designed to withstand severe debris environments and optimize the available actuation energy—predictably, consistently, and reliably. The valve

  • enhances well productivity by preventing formation damage and minimizing fluid loss
  • saves rig time and costs by minimizing interventions
  • increases safety by providing a downhole barrier against pressure reversals.

It works with all isolation requirements and applications: intelligent, multizone, gravel-pack, frac-pack, and stand-alone screen completions; well suspension and temporary abandonment; and remedial workovers.

Improved performance in debris-laden environments

The FORTRESS valve design is based on extensive testing to identify the effects of debris on the actuation energy available to operate the valve. On the basis of the testing, we modified numerous valve and shifting tool features to minimize gaps where debris tends to collect and the energy lost to the frictional effects of debris. The result is much more energy available for actuation.

Interventionless opening option

The Trip Saver one-time remote-opening mechanism can be included to provide interventionless one-time opening of the FORTRESS valve using a predetermined number of tubing pressure cycles applied against the closed valve. Before the remote-opening mechanism is actuated, the FORTRESS valve can be opened and closed mechanically multiple times.

New shifting tool options

In addition to the enhanced mechanical shifting tool, an optional hydraulically actuated contingency shifting tool is now available for FORTRESS valves that have an anchor profile. It can be deployed via slickline, braided line, or CT. Moreover, the ReSOLVE instrumented wireline intervention service features shifting tools that can be used to open and close the FORTRESS valve. The service provides real-time monitoring, dynamic tool control, and verified downhole actuation.

Stringent qualification procedures

Schlumberger isolation valves have set the standard for barrier valve performance and reliability, and the new FORTRESS valve is no exception. It has been more stringently tested that any other valve in the industry. Qualified to bubble-tight conditions, it meets or exceeds API 19V/ISO 28781 V1 and Q1 barrier standards.

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Technical Paper

FIV with Dynamic Underbalanced Perforation Increases Production

Industry Article

FORTRESS Valve Is Debris Tested to Higher Standards 

FORTRESS Isolation Valve
Debris accumulation is one of the biggest factors affecting valve performance. We conducted a study to better understand the effects of debris and how to minimize them.
View Debris Testing summary

Design Features Optimize Available Actuation Energy

Fortress isolation valve animation
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