Slimhole drilling and directional drilling for on-site inspections under a Comprehensive Test Ban: An initial assessment

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Description

On Site-Inspection (OSI), under the Comprehensive Test Ban being negotiated in the Conference on Disarmament in Geneva, may include drilling at the site of a suspected clandestine underground nuclear explosion to recover radioactive samples. It is in the interest of the drilling party to operate as light and compact a system as possible because it is likely that the drilling equipment will first be airlifted to the country being inspected, and then will be carried by air or surface to the inspection site. It will be necessary for the inspection party to have the capability for more than vertical drilling ... continued below

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12 p.

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Heuze, F.E. July 1, 1995.

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Description

On Site-Inspection (OSI), under the Comprehensive Test Ban being negotiated in the Conference on Disarmament in Geneva, may include drilling at the site of a suspected clandestine underground nuclear explosion to recover radioactive samples. It is in the interest of the drilling party to operate as light and compact a system as possible because it is likely that the drilling equipment will first be airlifted to the country being inspected, and then will be carried by air or surface to the inspection site. It will be necessary for the inspection party to have the capability for more than vertical drilling since there may not be a drilling site available vertically above the suspected nuclear cavity location. This means having, the ability to perform directional drilling and to obtain accurate positioning of the drilling tool. Consequently, several directions may be explored from a single surface drilling pad. If the target depth is expected to be at or less than 600 m (2000 ft), slant drilling may be required to a length well in excess of 600 m. Clearly, the operation must be designed with health and safety features to prevent radioactive exposure if the drilling encounters a nuclear source region. The DOE/LLNL community has developed a strong expertise in this regard. In this initial assessment we focus on the portability and directionality of drilling systems.

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12 p.

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OSTI as DE95015988

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  • Other Information: PBD: Jul 1995

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  • Other: DE95015988
  • Report No.: UCRL-ID--121295
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/95585 | External Link
  • Office of Scientific & Technical Information Report Number: 95585
  • Archival Resource Key: ark:/67531/metadc792365

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Creation Date

  • July 1, 1995

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • Feb. 17, 2016, 4:22 p.m.

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Heuze, F.E. Slimhole drilling and directional drilling for on-site inspections under a Comprehensive Test Ban: An initial assessment, report, July 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc792365/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.