Definition(s)
Closed Returns System
Flow path from the drill string non-return valves (floats) to the rotating control device and flow choke that can hold pressure.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Flow path from the drill string non-return valves (floats) to the rotating control device and flow choke that can hold pressure.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards