Definition(s)
Master Choke Line Valve
The valve on a choke and flow line that is nearest to the preventer assembly, used to stop flow through flow line and choke.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
The valve on a choke and flow line that is nearest to the preventer assembly, used to stop flow through flow line and choke.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards