Scientific Drilling
Scientific Drilling
SD
Articles | Volume 29
Articles | Volume 29
https://doi.org/10.5194/sd-29-39-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/sd-29-39-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29
Technical development
 | 
26 Apr 2021
Technical development |  | 26 Apr 2021

New geophysical memory-logging system for highly unstable and inclined scientific exploration drilling

Jochem Kück, Marco Groh, Martin Töpfer, Andreas Jurczyk, and Ulrich Harms

Viewed

Total article views: 1,407 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
895 428 84 1,407 57 84
  • HTML: 895
  • PDF: 428
  • XML: 84
  • Total: 1,407
  • BibTeX: 57
  • EndNote: 84
Views and downloads (calculated since 26 Apr 2021)
Cumulative views and downloads (calculated since 26 Apr 2021)

Viewed (geographical distribution)

Total article views: 1,369 (including HTML, PDF, and XML) Thereof 1,369 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 29 Jul 2025
Download
Short summary
New cable-free borehole memory sondes allow measurements in boreholes with very unstable walls, which is common, e.g., in soft sediments below lakes. The drill-pipe-mounted memory sondes can pass through narrowed zones. While being pulled up by the drill pipes, they measure natural radioactivity, velocity of sound, electrical conductivity, magnetizability, and the temperature of the borehole rocks. We describe the memory sondes and appendant depth devices, both tested in thorough field tests.
Read more
Share