This is the name of a log measured along a well bore (a well-log). You might have encountered this acronym
ATE1 in your log evaluation software or any (ASCII) log files provided by the logging company. The official name for this log is
'Downhole Head Tension'. This log is not often acquired after (or during) drilling a well. The values of this log represent the tension of the logging cable as measured at the top of the logging tool
Concluding, this is a measure of the force tending to cause extension of a body, as experienced in a cable, rope, string, etc.This log usually has the unit
'Force'. This is the agency or influence that if applied to a free body results chiefly in an acceleration of the body and sometimes in elastic deformation and other effects.
Data from this log can be used to investigate the tension of the cable. Similar logs are listed below: