Surface Logging Equipment

There are two different ways to produce logs at surface which
basically depend on the means the downhole equipment is run in
hole, these could be run either on wireline or slickline (using battery
packs to provide power to the tools).
The STP panel is used to power up downhole tools and acquires
realtime data at surface, from all the downhole sensors connected to
an electrical cable.
In case of using a slickline wire a different panel called DTR is used
at surface which records the measured depth and time (among
others, like line tension and cable speed) that will be used to
synchronize the data recorded downhole to finally produce logs
similar to those created with an SRO logging system.