E21B 23/00 Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
CPC: Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10)
Full Title
Full titles differ between systems:
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10)
Of 9 combined children, 7 exist in both systems.
2 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E21B 23/01 for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) since 1995 IPC+CPC Available in IPC and CPC
- E21B 23/02 for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing (E21B23/03 - E21B23/06 take precedence) IPC+CPC Available in IPC and CPC
- E21B 23/03 for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets since 1980 IPC+CPC Available in IPC and CPC
- E21B 23/04 operated by fluid means, e.g. actuated by explosion (E21B23/08 takes precedence) +13 CPC IPC+CPC Available in IPC and CPC
- E21B 23/08 Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems since 1980 IPC+CPC Available in IPC and CPC
- E21B 23/14 for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells since 1995 IPC+CPC Available in IPC and CPC