IPC Main Group
E21B 29/00 Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
Related Keywords
CUTTING pipes in boreholes
6 direct subcodes
Child Classifications
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- E21B 29/02 by explosives or by thermal or chemical means
- E21B 29/04 Cutting of wire lines or the like
- E21B 29/06 Cutting windows, e.g. directional window cutters for whipstock operations
- E21B 29/08 Cutting or deforming pipes to control fluid flow
- E21B 29/1 Reconditioning of well casings, e.g. straightening
- E21B 29/12 specially adapted for underwater installations