Definition(s)
UBD Zone
Section of well, in the context of Underbalanced Operations, where performing UBD.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Section of well, in the context of Underbalanced Operations, where performing UBD.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards