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Hostile Environment
Stainless
Steel Cables
MP-35N
Electrical
Resistance Considerations
Operating
Procedures
Applications
Mechanical Properties
Metallurgy
Figures 1, 2, 3, 7,8
Physical Properties
SUPA 70
SUPA 75
SUPA 70, 75, 80
Manual Menu
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Corrosion Resistant Cables
Operating
Procedures
for MP35N and Stainless Steel Logging Cables
Camesa
would like to offer some simple advice regarding operating procedures with
corrosion resistant cables in order for you the user to obtain the maximum
trouble free life from the cable.
One
major difference between the corrosion resistant cables and the ordinary plow
steel cable is that the corrosion resistant cables will not rust or corrode.
It often appears after several runs as if the corrosion resistant cable is a
"brand new" cable.
With
normal GIPS high carbon steel cables, the buildup of rust and other borehole
particles between the armor wires during logging operations helps to stabilize
the cable once the tension- rotation profile has been established after the
first several runs. The absence of such a buildup in the corrosion
resistant cables leads to a cable more susceptible to torque and rotation
problems, even if the cable has many runs on it. If the outer armor is
allowed to become loose, it can easily be "milked". Armor wire
"Birdcages" can form at the entrance to flow tubes or pack-offs.
In
order to minimize torque effects, the cable should be run relatively slowly, and
more importantly, large differences in cable tension between running into the
well and coming out of the well should be avoided. Such differences
build up torque, cause rotation, and can lead to loose armor. It is
very important that these cables are run carefully, and closely inspected for
signs of loose armor after every few runs.
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