This is the name of a log measured along a well bore (a well-log). The acronym
RAT1 is a unique identifier to recognize this particular log and can be encountered in your log evaluation software or your corporate datastores. The abreviatin stands for
'Downhole Uncalibrated Head Tension'. This log is not used too often in the industry. This log can be used to evaluate 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: