Tubular for downhole use
AssigneePro-Pipe Service & Sales Ltd.
InventorDaniel Porodo
Life of this patent
Estimating the term…
Abstract
A tubular for downhole use, the tubular including a pipe, an insulation layer surrounding the pipe, and a protective layer around the insulation layer and comprising a polymer. The protective layer can also include a compression layer adjacent to the insulation layer. There may be reinforcement material in the protective layer, for example encapsulated by the elastomer. The tubular may have bare portions at the ends for manipulation of the tubulars to form a tubing string. A sleeve may be provided using the same layer structure to insulate the bare portions which form joints of the tubing string. The sleeve can also include a base layer.
Claims20
A process for constructing an insulated tubular, the process comprising:
- treating a tubular to prepare a surface of the tubular to receive an insulation layer;
- installing the tubular on a rotating device;
- winding or depositing an insulation layer onto the surface of the tubular with rotation of the tubular on the rotating device;
- compacting the insulation layer to provide a compacted insulation layer;
- providing an interfacing layer onto a surface of the compacted insulation layer, wherein the interfacing layer is spiral wound around the insulation layer, and wherein a reinforcement material is spiral wound around the interfacing layer to provide a rippled pattern;
- and
- applying a protective layer onto a surface of the interfacing layer, wherein the rippled pattern increases the available surface area for bonding to the protective layer.
A process for constructing an insulated tubular, the process comprising:
- treating a tubular to prepare a surface of the tubular to receive an insulation layer;
- installing the tubular on a rotating device;
- winding or depositing an insulation layer onto the surface of the tubular with rotation of the tubular on the rotating device;
- compacting the insulation layer to provide a compacted insulation layer;
- providing an interfacing layer onto a surface of the compacted insulation layer;
- and
- applying a protective layer onto a surface of the interfacing layer,
- wherein the rotating device is a lathe.
A process for constructing an insulated tubular, the process comprising:
- treating a tubular to prepare a surface of the tubular to receive an insulation layer;
- installing the tubular on a rotating device;
- winding or depositing an insulation layer onto the surface of the tubular with rotation of the tubular on the rotating device;
- compacting the insulation layer to provide a compacted insulation layer;
- providing an interfacing layer onto a surface of the compacted insulation layer;
- and
- applying a protective layer onto a surface of the interfacing layer,
- wherein the interfacing layer is 2-way tape.
Dependencies are inferred from the claim text.