A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 2. Mechanical design

Mason, William P.; Shturmakov, Alexander J.; Johnson, Jay A.; Haman, Scott T.

doi:10.3189/172756407786857640

Cited by 12 publications

(15 citation statements)

References 5 publications

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“…Overall, the DISC drill performed well in warming conditions, and little effect of the warming ice was witnessed on operator monitors or on the drill upon its return to the surface, except for very small amounts of refrozen water on the drill head itself during the last few runs. It is believed that the flow rate of the DISC drill pump (Mason and others, 2007) aided in continuously flushing the cutter head with cooled drilling fluid and prevented issues with coring normal-length cores, as had been experienced with other deep-drilling endeavors by IDDO’s international colleagues (L. Augustin, unpublished information).…”

Section: Drilling In Warm Icementioning

confidence: 99%

Production drilling at WAIS Divide

Slawny¹,

Johnson²,

Mortensen³

et al. 2014

Ann. Glaciol.

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ABSTRACT. The deep ice-sheet coring (DISC) drill was used for production ice-core drilling at WAIS Divide in Antarctica for six field seasons between 2007 and 2013. Continuous ice-core samples were obtained between the snow surface and 3405 m depth. During the 2012/13 austral summer, the DISC drill's newly designed replicate ice-coring system was utilized to collect nearly 285 m of additional high-quality core samples at depths of high scientific interest. Annual progress graphs are described, as well as milestones achieved over the course of the project. Drilling operations, challenges encountered, drill fluid usage, drilling results, and the drill crew's experiences with the DISC drill and replicate coring system during production drilling are described and discussed in detail. Core-processing operations are described briefly, as well as the logistical undertaking of the DISC drill's deployment to Antarctica.

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Section: Drilling In Warm Icementioning

confidence: 99%

Production drilling at WAIS Divide

Slawny¹,

Johnson²,

Mortensen³

et al. 2014

Ann. Glaciol.

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“…The mechanical design and aspects thereof are described by Gibson and others (2014). The modular design of the actuator section was tailored to suit the existing modularity of the deep ice-sheet coring (DISC) drill (Mason and others, 2007). Each actuator section makes use of three brush-type electric d.c. motors, each of which drives an actuator by means of reducer, lead screw and linkage.…”

Section: Forces Horizontal Planementioning

confidence: 99%

Replicate ice-coring system architecture: electrical, electronic and software design

et al. 2014

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ABSTRACT. The drilling of a deep borehole in ice is an undertaking that spans several seasons. Over recent decades such drilling has become widespread in both polar regions. Owing to the remoteness of the drill sites, considerable cost is associated with the drilling of a deep borehole of several thousand meters. The replicate coring system allows re-drilling of ice core at select depths within an existing parent borehole. This effectively increases the yield of the existing borehole and permits re-sampling of ice in areas of high scientific value. The replicate coring system achieves this through the combination of actuators, motors, sensors and a computerized control system. The replicate coring drill is a further development of the deep ice-sheet coring (DISC) drill, extending the capabilities of the DISC drill to include replicate coring.

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“…Eleven subsystems were identified for the DISC drill (Mason and others, 2007; Mortensen and others, 2007; Shturmakov and Sendelbach, 2007). The design of each of the subsystems influenced the design of the others, and consequently much of the design of the subsystems was done concurrently.…”

Section: Drill Subsystemsmentioning

confidence: 99%

A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 1. Design concepts

Shturmakov¹,

Lebar²,

Mason³

et al. 2007

Ann. Glaciol.

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The Deep Ice Sheet Coring (DISC) drill, developed by Ice Coring and Drilling Services (ICDS) under contract with the US National Science Foundation, is an electromechanical drill designed to take 122 mm diameter ice cores to depths of 4000 m. The conceptual design of the DISC drill was developed in 2002/03 based on science requirements written by K. Taylor and the United States ice-coring community and on engineering performance objectives. Detailed design of the drill began in June 2003. Special attention was paid to building safety into the design and operation of the drill system. The drill was designed and manufactured by a team of engineers and technicians from the University of Wisconsin–Madison and various subcontractors with assistance from the science community, the European ice-drilling community and polar logistical support organizations. ICDS successfully tested the drill in Greenland in 2006 and will continue its development to meet the science objectives of the West Antarctic Ice Sheet Divide Ice Core Project.

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A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 2. Mechanical design

Cited by 12 publications

References 5 publications

Production drilling at WAIS Divide

Production drilling at WAIS Divide

Replicate ice-coring system architecture: electrical, electronic and software design

A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 1. Design concepts

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