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Whenever you perform a Cerberus analysis, you must always take care to understand how sensitive your results are to the input data. For example, if the friction coefficient for the well is slightly higher, would that make the difference between being able to do the job and not being able to? Or, if the well fluid is denser than originally thought, would that make a difference? And so on…

The Sensitivity Wizard provides a means to look at multiple data values and hence determine if the project is highly sensitive to input parameters.

On the first screen of the Wizard, you choose the parameter(s) you wish to investigate. You can select up to three different parameters to test simultaneously.

The results are shown in a Table. Note how the depth reached and the ability to pull varies with friction coefficient.

The next example is for coiled tubing. In this case, the maximum set-down force is also calculated. Note that the first three calculations reach TD successfully, while the last two do not.

The final example shows a more complex case with two parameters (friction coefficient and well density).

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