IPC Definitions - January 01, 2012

E21B 47/04 - Definition fr

Definition statement

This group covers:

Processes or apparatus for measuring the distance from the surface to a particular point in a borehole e.g. the bottom of the borehole or the top of a fluid or fluent, non-gaseous substance in the borehole.

Informative references

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

Measuring liquid level in general

G01F

Measuring depth in general

G01B