Patent ID: 7770639

Claim:
A method for determining the magnitude of creep for a well operation performed by a wireline supporting a tool string in a wellbore with one or more casing devices situated along the wellbore, the wireline controlled by surface equipment having an indicator, the method comprising the steps of: configuring the tool string for the well operation; selecting a first casing device having a first casing device depth; initializing a total increment to zero; performing the following steps until the first casing device is not detected: increasing the value of the total increment by an increment; moving the tool string within the wellbore at a selected speed to a greater depth than the first casing device depth; raising the tool string at the selected speed to a test depth that is greater than the first casing device depth by the value of the total increment; stopping the wireline at the test depth for a selected time duration; and monitoring the indicator for detection of the first casing device during the selected time duration; and determining an amount of creep as being equal to the value of the total increment minus one half of the increment.