IPC Definitions - January 01, 2012
E21B 47/10 - Definition
This group covers:
Processes or apparatus for determining if the pipes are sufficiently fluid-tight to prevent leakage or ingress of liquid or gas;
Processes or apparatus for detecting unwanted fluids flowing from the formation into the borehole;
Processes or apparatus for detecting the presence and properties of production fluids in the borehole;
Processes or apparatus for determining well debit or flow rate.