Before you run the Wizard, you use the tool configuration screen to specify which parts of the tool string are potentially vulnerable to sticking. For example, if the tool has standoffs then it is relatively invulnerable, and you might set the vulnerability to a low value. But, if the tool contains pads which will be applied to the well side for a prolonged time (such as a formation testing tool) then the value should be high.

Then, you run the Wizard. First, you define the top and bottom of the open hole zone where differential sticking is a risk, and the reservoir pressure in that zone.

Then, you make some selections to describe the circumstances of sticking.

• The severity ranges from no sticking at all up to severe sticking.
• The vulnerability describes which components of the cable/pipe and toolstring may potentially get stuck.
• The location allows you to be more specific about where in the well you believe the sticking is most likely to occur. 

Finally, you perform the calculations. There are two options, plotting a graph of surface weight against depth, and calculating the pull required to get free with the tools at a given depth.

The following is an example of the Pull to Get Free calculation.

The Well Viewer is a graphic which shows you where the tools are placed in the well relative to the various features and problem zones in play. Note that as well as the sticking zone, the vulnerable components of the toolstring are also indicated.