Flapper Investigation Tool

The Flapper Investigation Tool (FIT) is used to confirm proper function of the flapper before running intervention tools through a tubing retrievable safety valve. If the flapper is only partially open, there is a risk of parting wireline and losing the toolstring when equipment is retrieved back through the safety valve. This risk can be effectively managed by using the FIT to confirm the flapper is fully open before running wireline in the well.