IPC Definitions - January 01, 2012

E21B 47/00 - Definition fr

Definition statement

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

Informative references

Attention is drawn to the following places, which may be of interest for search:

Geophysical logging

G01V