A device that separates entrained gas from the drilling fluid system.
Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards
Mud Gas Separator
Device that separates free gas from mud also known as a Gas Buster.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards