Concentric insulating conduit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 30, 1985
Grant Date -
N/A
app pub date -
May 5, 1983
filing date -
May 5, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A concentric insulating tubular conduit member for use in forming a conduit string, such as a tubing string in a subterranean well, is disclosed. Each individual concentric conduit comprises an outer tubing and an outwardly flared inner tubing welded to the outer tubing at the ends. Insulation may be contained within the sealed annular cavity between the inner and outer tubing members and between inner and outer coupling members at the juncture between adjacent tubing sections. Centralizers are positioned in the annular cavity between the inner and outer tubular members at one or more points between the ends of each conduit section. Each centralizer has an axially extending cylindrical section and a radial support section in contact with one of the tubular members.
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Cited Art Landscape
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