Deep Core Drilling: Electro-Mechanical or Thermal Drill?

• Main Authors: Donnou, D, Gillet, F, Manouvrier, A, Perrin, J, Rado G , C
• Other Authors: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE GRENOBLE (FRANCE) LAB DE GLACIOLOGIE
• Format: Text
• Language: English
• Published: 1984
• Subjects: Machinery and Tools; *DRILLING MACHINES; ANTARCTIC REGIONS; CENTRIFUGE SEPARATION; CORES; DEEP DEPTH; DRILLING; DRILLS; ELECTROMECHANICAL DEVICES; FLUIDS; FRANCE; GLACIERS; ICE; SYMPOSIA; THERMAL DRILLS; ICE DRILLS; DRILLING FLUIDS; COMPONENT REPORTS; FOREIGN REPORTS; Antarctic; Canada; Adelie Land; Antarc*; Antarctica
• Online Access: http://www.dtic.mil/docs/citations/ADP004812; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP004812

In 1977/78 at Dome C, Antarctica, it was not possible to drill deeper than 905 m because of hole closure. The thermal drill was subsequently been modified to drill deeper in a fluid filled hole. Simultaneously, we have developed an electro-mechanical drill which employs a centrifuge device for separating chips and drilling fluid. Both sets of equipment are described, as well as the main results obtained in the first tests made in Adelie Land in 1981/82. This article is from 'Proceedings of the International Workshop/Symposium on Ice Drilling Technology (2nd) Held at Calgary, Alberta, Canada on 30-31 August 1982,' ADA156733, p81-84.