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U.S. Department of Energy
Office of Scientific and Technical Information

Method and apparatus for the insulation of conduit

Patent ·
OSTI ID:5432396
A method and apparatus are described for combining foamable resins in a remote location, such as in the space between concentric pipes. The resin dispenser and mixer are withdrawn as foam is formed. The method may be used in thermally insulating the annulus of a steam or other hot fluid injection well. (4 claims)
Assignee:
Dow Chemical Co.
Patent Number(s):
US 3444279
OSTI ID:
5432396
Country of Publication:
United States
Language:
English