the packer but has not yet contacted the casing with enough force to anchor it in place at this time the differential pressure that exists between the cross flowing reservoir intervals is applied to the full cross sectional area of the un anchored bha depending on the specific application the resulting forces could be significant and promote the aforementioned results in an effort to avoid the potential results of operating an inflatable packer in the presence of cross flow the pressure across the packer is preferably equalized through the center of the packer until it is firmly anchored to the wall to achieve this goal a pilot operated relief valve according to this invention is incorporated into the bha design the valve equalizes wellbore pressure across the inflatable packer while it is inflating and then closes the equalization path after the packer has fully contacted the casing walls during packer deflation the valve opens prior to release of the packer from the casing wall and remains open during the deflation process the valve is designed to be pressure actuated using a pilot pressure from the coiled tubing the use of coiled tubing pressure to control the valve 39 s operation enables the valve to actuate at the proper time relative to the packer inflation and deflation cycle an application in which the intervention tool is particularly useful is.