The IDP replicate coring system for the Deep Ice Sheet Coring (DISC Drill) functions by tilting and forcing the sonde against the drill hole wall with ‘actuators’ that push against the wall upon command from the surface. This gradually deviates the drilling out of the main borehole into the side wall and eventually into the new replicate hole. The replicate coring system was constructed in 2011. The system was tested at WAIS Divide during the 2011-2012 field season. No core was obtained, but using insight from that test, IDP engineers made modifications to the sonde and carried out further testing in Madison. During the 2012-2013 field season at WAIS Divide, the system produced five azimuth and depth-controlled deviations at four target depths. A total of 285 m of excellent quality replicate ice core was recovered.
At the urging of the science community, IDP engineers undertook evaluation of a less complex replicate coring method that might be applied with the Foro 1650 Drill and Foro 3000 Drill. A Replicate Coring System for 98mm Electromechanical Drill – Whipstock Conceptual Documentation report was completed, describing a more passive replicate coring approach through implementation of a whipstock device, similar to those used in the oil and gas industry. IDP believes this concept shows promise for successful implementation at Hercules Dome with the Foro 3000 Drill.
|Name||Replicate Ice Coring System|
|Number in Inventory||
Number in Inventory
|Ice Core Diameter||
Ice Core Diameter
|Ice Core Length||
Ice Core Length
|Rock Core Diameter||
Rock Core Diameter
|Rock Core Length||
Rock Core Length
|IDP Driller Required?||
IDP Driller Required?
Yes, see Deep Ice Sheet Coring Drill for more information.
See Deep Ice Sheet Coring Drill for more information.
|Pavel Talalay, Hong J (2021) Perspectives for development of ice drilling technology: continuation of the discussion. Annals of Glaciology, 62, (84), 143-156. doi: 10.1017/aog.2020.81. https://doi.org/10.1017/aog.2020.81||2021|
|Mary R Albert, Kristina R Slawny, Grant Boeckmann, Chris J Gibson, Jay A Johnson, Keith Makinson, Julius Rix (2020) Recent Innovations in Drilling in Ice. Chapter 6 of Advances in Terrestrial Drilling: Ground, Ice and Underwater, Bar-Cohen and Zacny, eds., 157-220. https://www.routledge.com/Advances-in-Terrestrial-Drilling-Ground-Ice-and-Under…||2020|
|Kyle Zeug (2018) Replicate Coring System for 98mm Electromechanical Drill - Whipstock Conceptual Documentation. 1-16.||2018|
|Chris J Gibson, Jay A Johnson, Alexander J Shturmakov, Nicolai B Mortensen, Joshua J Goetz (2014) Replicate ice-coring system architecture: mechanical design. Annals of Glaciology, 55, (68), 165-172. doi: 10.3189/2014AoG68A019. https://doi.org/10.3189/2014AoG68A019||2014|
|Jay A Johnson, Nicolai B Mortensen, Chris J Gibson, Joshua J Goetz, Alexander J Shturmakov (2014) Replicate ice-coring system testing. Annals of Glaciology, 55, (68), 331-338. doi: 10.3189/2014AoG68A034. https://doi.org/10.3189/2014AoG68A034||2014|
|Nicolai B Mortensen, Joshua J Goetz, Chris J Gibson, Jay A Johnson, Alexander J Shturmakov (2014) Replicate ice-coring system architecture: electrical, electronic and software design. Annals of Glaciology, 55, (68), 156-164. doi: 10.3189/2014AoG68A014. https://doi.org/10.3189/2014AoG68A014||2014|
|Alexander J Shturmakov, Donald A Lebar, Charles R Bentley (2014) DISC drill and replicate coring system: a new era in deep ice drilling engineering. Annals of Glaciology, 55, (68), 189-198. doi: 10.3189/2014AoG68A017. https://doi.org/10.3189/2014AoG68A017||2014|
|U.S. Science Community, IDPO (2009) Replicate Ice Coring System - Science Requirements. 1-5.||2009|
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