US Patent 10577921 Determining downhole tool trip parameters

Techniques for determining depth of a downhole tool in a wellbore include running a first downhole tool into a wellbore on a downhole conveyance; generating time-dependent logging data with the first downhole tool in the wellbore, at least one of the depth-dependent logging data or the time-dependent logging data associated with an electric or a magnetic property of a wellbore casing or a geological formation; correlating at the first downhole tool the time-dependent logging data with the depth-dependent logging data; and based on the correlation, determining at least one of a depth of the first downhole tool in the wellbore or a speed of the first downhole tool in the wellbore.