Stand-off device
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United States of America Patent
Stats
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Aug 27, 2002
Grant Date -
Sep 13, 2001
app pub date -
May 23, 2001
filing date -
Feb 5, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stand-off device for tubulars comprising a sleeve adapted to fit around a tubular, the sleeve comprising an outer surface and a plurality of blades extending along the outer surface of the sleeve, the blades comprising a bearing surface, wherein the bearing surface of each blade is curved longitudinally. The device may be metallic or non-metallic. Non-metallic devices further comprise a protective coating to inhibit abrasion, corrosion, sparking, and electrolysis. The stand-off device is particularly suitable for use with casing in deviated wellbores.
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