Isolation Valve Cleanup Subs
Remove debris above ball-type isolation valves
Clean up isolation valves with jetting or circulation subs to reduce the risk that debris will hinder valve operation.
Premium isolation valve
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.
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.
Schlumberger isolation valves have set the standard for barrier valve performance and reliability, and the 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.
As the industry leader in isolation valve technology since the first FIV formation isolation valve installation in 1996, we have gone beyond existing standards to understand how and to what extent debris affects valve performance.
We developed 30 different debris mixtures to represent the most common types of downhole debris and varied the mixtures by particle size and fluid density.
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. As a result, the valve