Saltel Industries

Frédéric Nicolas

Benjamin Saltel

Yoann Riou

Jean-Louis Saltel

Gwenaël Tanguy

James Leighton

Samuel Thiebaut

The present invention relates to a device for laying an expansible lining in a conduit. The device may include a patch having an initial diameter less than that of the conduit, and the patch may be configured to deform by radial expansion beyond an elastic limit to an expanded diameter such that it may contact a wall of the conduit. The device may also include an expander tool axially displaceable inside the patch, and the expander tool may be configured to cause the radial expansion of the patch to an expanded diameter. The device may also include a checking member mounted in proximity to the expander tool. A section of the checking member may be calibrated so that the checking member and the expander tool are capable of passing freely inside the patch when the patch is properly expanded, and the checking member and the expander tool are unable to pass inside the patch when the patch is improperly expanded.

Device for applying an expandable skirt having application diameter control upon advance

Method for repairing a hanger (D) of a liner (B), for making a leak-tight connection, the liner (B) being placed inside and in the continuation of the casing (A) of a well, the method consisting in axially positioning a metal tubular blank () in the well, the blank having a solid wall radially deformable beyond its elastic limit and comprising an upper cylindrical portion () whose outer diameter is slightly smaller than the inner diameter of the casing (A), a lower portion () also cylindrical whose outer diameter is slightly smaller than the inner diameter of the liner (B), and an intermediate portion () of diameter varying between these two diameters, and causing radial expansion of at least one of these two cylindrical portions () beyond its elastic limit so that they are applied closely and firmly and in leak-tight manner against the inner face of the wall opposite the casing (A) or liner (B).

Method for repairing a liner hanger, device and blank for implementation thereof

The method of the invention comprises inserting into the well or the piping to be cased, a tube () including tube sections previously connected end to end, proceeding with the radial expansion of the tube using an inflatable bladder () so that the wall thereof bears against that (C) of the well or the piping; wherein the method is characterized in that the expansion is achieved not on the entire length of the tube but only at certain areas () thereof which are spaced from each other by non-expanded portions (), so that the total length of the expanded areas () is substantially smaller than the total length of the non-expanded areas (), the number of expanded areas () being at least equal to three. The invention can be used in the field of water or crude oil production.

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Rennes, France

Frédéric Nicolas