The FORTRESS isolation barrier valve isolates reservoir fluids in the lower completion and allows operators to transition from the lower to the upper completion without intervention. The valve is designed to withstand severe debris environments and optimize the available actuation energy— predictably, consistently, and reliably.
The new FORTRESS valve design was based on extensive testing, done to identify the effects of debris and the relation of debris to the actuation energy required to remotely open 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 to minimize the energy lost to frictional effects of debris. The result was much more energy available for actuation.
In addition to the enhanced mechanical shifting tool, an optional hydrostatically actuated contingency shifting tool is now available with up to five times the force of the mechanical tool, ensuring that the valve can be opened remotely in extreme conditions.
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 ISO 28781 barrier standards.
FIV with Dynamic Underbalanced Perforation Increases Production