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US 6,044,906 AGranted
Inflatable tubular sleeve for tubing or obturating a well or pipe
AssigneeDrillflex
InventorJean-Louis Saltel
Life of this patent
Estimating the term…
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.
Claims14
A radially deformable inflatable tubular sleeve (1;
- 5;
- 8) for tubing or obturating a well (P) or a pipe, the sleeve comprisings:
- a tube having a wall, and
- a series of breakable restraining rings (2;
- 6;
- 9) offset axially relative to each other alone the wall and adapted to break one after the other in the longitudinal direction of the sleeve when said tube is inflated by an internal fluid under pressure.
3 more elements
A tool for obturating a well (P) or a pipe, comprising:
- a sleeve (1;
- 5;
- 8) having a tube and a plurality of breakable restraining rings (2;
- 6;
- 9) disposed alone a longitudinal axis of the tube;
- and
- a preform (3) disposed about the tube.
4 more elements
Dependencies are inferred from the claim text.