Bore protector
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United States of America Patent
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Dec 8, 2015
Issued Date -
N/A
app pub date -
Jan 11, 2012
filing date -
Jan 11, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention provides a bore protector for a tubing hanger, the bore protector is to be arranged in a tubing hanger in a spool in a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well. The bore protector is distinctive in that it comprises a means to be releasably fastened in at least one of: the spool in the Xmas tree and the tubing hanger, and a wear sleeve extending down into the tubing hanger, covering the tubing hanger sealing surfaces for the tubing hanger plugs, the wear sleeve comprises a shoulder at or near an upper end, the shoulder is arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve is releasably fastened.
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