Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings

Introduced: September 1968

Of 10 combined children, 8 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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E21B 17/003 CPC only CPC only
E21B 17/006 CPC only CPC only
E21B 17/01 Risers since 1980 +3 CPC IPC+CPC Available in IPC and CPC
E21B 17/02 Couplings; joints +3 CPC IPC+CPC Available in IPC and CPC
E21B 17/10 Wear protectors; Centralising devices +9 CPC IPC+CPC Available in IPC and CPC
E21B 17/14 Casing shoes IPC+CPC Available in IPC and CPC
E21B 17/16 Drill collars since 1980 IPC+CPC Available in IPC and CPC
E21B 17/18 Pipes provided with plural fluid passages since 1980 IPC+CPC Available in IPC and CPC
E21B 17/20 Flexible or articulated drilling pipes since 1980 +2 CPC IPC+CPC Available in IPC and CPC
E21B 17/22 Rods or pipes with helical structure since 1980 IPC+CPC Available in IPC and CPC