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Cable Installation for
Deep Wells
Cable Tension During
Installation
Operational Situations
Working Loads
Receiving & Handling
Installation & Spooling
Operating and Maintenance
Common Abuses
Damage Caused by
Excessive Tension
Wire Line Spooling
Installation Tension for
Well Logging Cables Chart
Cable Damage Due
to Drum Crush
Figures 1 - 5
Example for a 7H42 Cable
Example for a 7H47 Cable
Cable Installation
Tensions
Installation Tension
Graph
Manual Menu
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Receiving and Handling
When unloading reels of electromechanical cable, do not drop the reels to the
ground or floor from the freight car or truck. Reels are not designed to withstand this abuse. The
weight of the cable could collapse the reel. Removing cable from a collapsed reel is
very difficult, and very likely to damage the cable permanently.
When using a bar to roll a reel of cable, pry against the reel head, not against the cable it-self. When moving the reel in
any way, avoid contact with the cable.
Unload the reel directly from the truck or freight car onto the loading dock when possible.
UNREELING
During the unreeling process, it is imperative that the reel rotates as the cable is
unwound.
SPOOLING FROM REEL
TO DRUM
To reel a cable onto the spooling drum, the cable should travel from the top of the reel to the
top of the drum. This will prevent a reverse bend in the cable. A reverse bend may
make the cable livelier and harder to handle.
(Fig. 3 Preferred Way.)
THE CORRECT WAY TO UNREEL ELECTROMECHANICAL CABLE
1. The reel may be mounted on a shaft supported by two
jacks. (See Fig. 1.) By holding the end of the cable and
walking away from the reel, the workman pulls the cable from the reel and the reel rotates
properly.
2. The reel may also be mounted on an unreeling stand. (See
Fig. 2.) It can then be unwound as above. However, extra care must be exercised to keep the
cable under sufficient back- tension. If slack accumulates and the cable drops below
the lower reel-head, kinks will form. Solid back tension will also assure tight spooling onto the
winding drum for initial service.
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