Equipment

IDDO maintains and operates existing drills and borehole logging winches, and develops new systems with two principal foci:

  1. to provide high quality ice cores, and
  2. to produce boreholes that provide access to the interior and beds of ice sheets and glaciers for such purposes as embedding instruments, collecting gas samples, setting seismic charges, studying subglacial processes, studying subglacial geology, collecting subglacial bedrock core, and borehole logging.
 

Intermediate Depth Logging Winch

The Intermediate Depth Logging Winch is a Mount Sopris logging hoist that has been modified for polar field use. The winch is capable of logging boreholes 1500 meters deep, can operate at temperatures as low as -45 degrees C, and is transportable by Twin Otter. The winch allows full-range speed control down to a complete stop, and can maintain a uniform logging speed as low as 2.5 cm/s. The winch includes a digital depth measuring system using a bi-directional counter with a precision of 1 cm or better, and a cable-tension measuring system and a motor cut-out in the event of over-tension. The winch allows for automatic re-spooling of the cable via a level-wind system. The cable is a Teflon-coated standard four-conductor logging cable headed with a standard 1-inch outer-diameter Gearhart-Owen variant. The winch has a broadband slip-ring connector enabling it to transmit both analog and high speed digital signals from DC to ~10 MHz. The winch has an aluminum ramp system for loading/unloading from a Twin Otter.

A casing-mounted logging tower is available for use with the Deep Logging Winch.


The intermediate depth logging winch in operation at Siple Dome, Antarctica, during the 2013-2014 summer field season. Credit: Josh Goetz

The intermediate depth logging winch in operation at Siple Dome, Antarctica, during the 2013-2014 summer field season. Credit: Josh Goetz

The IDDO intermediate depth logging winch for logging boreholes up to 1500-meters deeep.


Equipment Details

Name Intermediate Depth Logging Winch
Type Logging
Number in Inventory 1
Max. Practical Depth 1580 meters
IDDO Driller Required? Yes (usually)
Power requirements/source 120V, 3.5kW generator
Helicopter Transportable? Yes
Light Aircraft Transportable? Yes
Trench Required? No
Shipping Weight Winch crate is 900 lbs
Winch control case is 75 lbs
Shipping Cube Winch crate is 57" x 42" x 35"
Winch control case is 39" x 24" x 12"
Comments Weights and dimensions above do not include a generator or fuel

Associated Documents