IPC Definitions - January 01, 2012
E21B 47/00 - Definition
This main group covers:
Processes or apparatus for collecting data about either a borehole created by drilling of the earth or the borehole after pipe insertion.
References relevant to classification in this main group
This main group does not cover:
Monitoring pressure or flow of drilling fluid | E21B 21/08 |
Attention is drawn to the following places, which may be of interest for search:
Geophysical logging | G01V |