/ RDLs / ISO 15926 Part 4: Core reference data - Edition 4 / DRILL COLLAR

DRILL COLLAR

Class
Identifier
https://posccaesar.org/ontology/15926-4/4.0/DRILL_COLLAR
Definition A <DRILL COLLAR> is a <THREADED PIPE> that is used at the bottom of the drill string - just above the drill bit - to add weight to the drill bit.