Inflatable tubular sleeve for tubing or obturating a well or pipe
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United States of America Patent
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-
Apr 4, 2000
Grant Date -
N/A
app pub date -
Jun 4, 1998
filing date -
Aug 4, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radially deformable inflatable tubular sleeve for tubing or obturating a well (P) or a pipe. The sleeve includes a tube and a series of breakable restraining rings positioned along the tube. The rings are arranged so that each ring breaks one after the other in the longitudinal direction of the sleeve when the tube is inflated by an internal fluid under pressure. As a ring breaks, liquid (B) present in the well is moved progressively forward so as to prevent pockets forming on the outside of the tubing.
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