4-Inch Drill

Description

The 4-Inch Drill is an electromechanical ice coring drill that takes a 104 mm (4-inch) diameter core. Cores can be retrieved from depths to approximately 400 meters. Winches with 100-, 200-, and 400-meter cables are available. The drill is of a mature design and has been used successfully for several decades. It is particularly useful on projects requiring a larger diameter core than produced by the Badger-Eclipse drills. Depending on configuration, the drill can be transported by light aircraft or helicopter.

An electrothermal version of this drill, which melts an annulus around the core, can be substituted for use in ice warmer than -10° C. Both versions use core dogs to break the core off and hold it for retrieval.

The current 4-Inch Drills are repaired as needed, however, the systems are aging. In some cases, replacement parts may no longer be available. To meet continued demand for a drill of this type, IDP has designed and is nearing completion of fabrication of the new Foro 400 Drill. A 4-Inch Drill system will still be maintained; however, the Foro 400 Drill will offer new capabilities and substantial weight savings.

Equipment Details

Name 4-Inch Drill
Type
Type
Ice coring
Number in Inventory
Number in Inventory
2
Max. Practical Depth
Max. Practical Depth
300-350 m
Hole Diameter
Hole Diameter
145 mm (5.7 inches)
Ice Core Diameter
Ice Core Diameter
104 mm (4 inches)
Ice Core Length
Ice Core Length
1 m
IDP Driller Required?
IDP Driller Required?
Yes, 1 driller (2 people required for drill operation)
Drill Fluid Required?
Drill Fluid Required?
No
Power Requirements/Source
Power Requirements/Source
220 V, 5 kW generator
Estimated Drilling Time
Estimated Drilling Time

100 m - 30 hours
150 m - 50 hours
200 m - 75 hours

Time to Move (breakdown and setup)
Time to Move (breakdown and setup)
6 hours
Helicopter Transportable?
Helicopter Transportable?
Yes
Light Aircraft Transportable?
Light Aircraft Transportable?
Yes
Shipping Weight
Shipping Weight

2600 lbs

Shipping Volume (Cube)
Shipping Cube

146

Comments
Comments

Complete unit operating is ~1000 lbs. Heaviest component is winch (on sled) at ~500 lbs.

Photos

Project History

2019-2020 Antarctic - Thwaites-Amundsen Regional Survey and Network (TARSAN)
2019-2020 Antarctic - RAID Antarctic Field Trial (AFT) 3
2018-2019 Antarctic - Reconstructing Carbon-14 of Atmospheric Carbon Monoxide from Law Dome, Antarctica, to Constrain Long-Term Hydroxyl Radical Variability
2017-2018 Antarctic - Minna Bluff Firn Core and Firn Air Sampling
2016-2017 Antarctic - Characterization of Upstream Ice and Firn Dynamics affecting the South Pole Ice Core
2015-2016 Antarctic - RAID/ASIG Packer Test
2013 Arctic - Greenland: Greenland Aerosols and Methane Records
2011 Arctic - Greenland: Greenland Ice Sheet Snow Accumulation Variability
2011 Arctic - Greenland: Greenland Ice Sheet Monitoring Network
2010 Arctic - British Columbia: Ice Core Paleoclimate Records from Combatant Col, Mount Waddington
2010 Arctic - Greenland: Summit Firn Air Cooling Feasibility Study
2010 Arctic - Greenland: Understanding the Physical Properties of Northern Greenland Near-Surface Snow

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