Underwater pipelines
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United States of America Patent
Stats
-
Mar 24, 1981
Grant Date -
N/A
app pub date -
Apr 17, 1978
filing date -
Apr 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of recovering an underwater pipe comprises inserting a recovery line attachment into the pipe, explosively deforming the pipe so that it is mechanically secured to the attachment, and bringing the pipe to the surface by means of a lifting line secured to the attachment. The attachment may include a body insertable into the end of the pipe and a portion having a generally conical surface so that it forms a water tight seal with the pipe when the pipe is explosively deformed into engagement with it.
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Cited Art Landscape
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