Drill pipe tubing and casing protector
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United States of America Patent
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Aug 25, 2015
Grant Date -
May 24, 2012
app pub date -
Nov 22, 2011
filing date -
Nov 24, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An assembly and method for protecting a pipe string movable within a wellbore. A generally annular body (56) is internally dimensioned to fit around said pipe string, and an outer sleeve (62) formed from at least two part-annular sections (58,60) and rotatably located over the annular body (56). A pair of substantially annular clamping means are adapted to restrict longitudinal movement of the body (56) and outer sleeve (62) relative to the pipe string, each clamping means comprising a one-piece clamping ring (70) and a fastener (74) adapted to tighten the clamping ring (70) around the pipe string. The body (56), outer sleeve (62), and clamping rings (70) may be formed from one or more sacrificial materials that can break up and be circulated out of the wellbore.
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