BOREHOLE LOGGING DEVICE

A logging device measures the inclination of a borehole and its bearing. The instrument rotates freely on a weighted cylindrical platform within a housing to position the axes of a pendulum and a gyroscope. The deviation of the pendulum from the vertical and the bearing of the gyroscope are measured by accurate potentiometers. An additional, more sensitive pendulum is used for small inclinations. /Patent Abstract/

• Supplemental Notes:
  • Notice of this patent appeared in Geophysics, Vol. 40, No. 3, June 1975.
• Corporate Authors:

  United States Patent Office

  2021 Jefferson Davis Highway
  Arlington, VA  United States  22202
• Authors:
  • Otte, H J
• Publication Date: 1974-11-5

Subject/Index Terms

• TRT Terms: Boreholes; Gyroscopes; Measuring instruments; Slopes
• Old TRIS Terms: Bearing /direction/; Borehole loggings
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00097705
• Record Type: Publication
• Report/Paper Numbers: 3,845,569 Patent
• Files: TRIS
• Created Date: Aug 13 1975 12:00AM