Definition(s)
Foam (Phase System)
Two-phase system, similar to an emulsion, in which the dispersed phase is air or gas.
Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards
Foam (Floating Material)
Bubbles floating on the surface of the drilling fluid. NOTE The bubbles are usually air-cut drilling fluid but can be formation gasses.
Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards
Foam
Foam is generally defined as gas dispersed in liquid in a ratio such that its bulk density approaches that of gas rather than liquid. Pure liquids rarely foam when gassed.
Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Foam
A two-phase system where the dispersed portion is air. Applied to UBD in water sensitive formations. Recyclable foams are available.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Foam
Foam is the extinguishing medium produced when foam solution passes through a foam generator and is mixed with air. <fixed foam fire-extinguishing systems>.
Source: IMO Resolution MSC.327(90), amendments to the International Code for Fire Safety Systems, 25 May 2012, International Maritime Organization. Regulatory Guidance
Foam
Foam is the extinguishing medium produced when foam solution passes through a foam generator and is mixed with air.
Source: IMO MSC.1/Circ.1271, Guidelines for the approval of high-expansion foam using inside air for the protection of machinery spaces and cargo pump-rooms, 4 June 2008, International Maritime Organization. Regulatory Guidance