Definition(s)
Circulating Head
A device attached to the top of drill pipe or tubing to allow pumping into the well.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
A device attached to the top of drill pipe or tubing to allow pumping into the well.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards