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JoeSmith

08/18/08 10:43 PM

#75642 RE: alien42 #75641

Very good catch spooky, it was Shell and Flotation Tech (and others) that built and tested the first up/down looking ACDP system.
That is the type system we shipped 8-14 imo. Now they use fiber optic instead of the modems.

Shell
Global Solutions (US) and RD
Instruments, working in co-operation
with Floatation Technologies, Linkquest,
and Evans-Hamilton, set about designing
a downward/upward-looking system for
offshore operations.
A validation test for this configuration
was performed in the Gulf of Mexico,
where Shell Oil was drilling from the
Transocean Sedco Forex Deepwater
Nautilus semi-submersible in 1574m
water depth. The rig was already fitted
with an RDI 75kHz Vessel Mounted (VM)
downward-looking ADCP mounted in the
rig’s port pontoon some 9m below the
surface. This current profiler provided
real time data for the top 600 – 800m of
water.
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