The Casing Integrity Testing Tool (CITT) combines the inflatable packer technology with a multi-set packer tool chassis enabling operators to perform multiple casing integrity tests in a single trip. Its design features a steel reinforced inflatable packer element and a tool chassis fitted with an Auto Dump Valve (ADV), which was designed to allow for multiple inflation cycles and prevent premature inflation in the case of hydraulic unbalances across the workstring during deployment.
The CITT can be deployed on workstring or coiled tubing, and it is inflated hydraulically by increasing applied pressure. Once the CITT is set, mechanical integrity of the casing string
can be tested by increasing applied pressure within the workstring annulus above the CITT.