Definition(s)
Displacement
The volume of steel in the tubulars and devices inserted and/or withdrawn from the well bore.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Displacement (compressor)
Volume displaced by each stroke of a piston in a reciprocating compressor cylinder.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Displacement (pipe)
Physical volume of a pipe section, usually in cubic feet.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards