Method and system for pressure pipe drilling cement-mortar lined and coated steel cylinders
AssigneeSanexen Environmental Services Inc.
InventorsGilles Gagnon, Michael Davison, Martin Bureau
Life of this patent
Estimating the term…
Abstract
A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising internally lining the pipe with a fluid-tight sheath; drilling a first cavity through the exterior layer until exposing the interior layer; injecting a sealant into the first cavity; and drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath.
Claims20
A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising:
- internally lining the interior layer with a fluid-tight sheath;
- drilling a first cavity through the exterior layer until exposing an outer surface of the interior layer;
- injecting a sealant into the first cavity;
- and
- drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath, thereby providing a sealed passageway to an inside of the pipe for flow communication to the inside of the pipe.
A method for pressure pipe drilling a pipe, the pipe comprising an exterior layer and an interior layer, the method comprising internally lining the interior layer with a fluid-tight sheath, drilling to expose an outer surface of the interior layer thereby forming a first cavity, sealing walls of the first cavity, and drilling a second cavity in the first cavity through the interior layer and the fluid tight sheath, the second cavity opening inside the pipe.
Dependencies are inferred from the claim text.