Power cable having multiple layers including foamed protective layer
AssigneeSchlumberger Technology Corporation
InventorsJason HOLZMUELLER, Mark METZGER, John MULLHOLLAND
Life of this patent
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Abstract
A technique facilitates construction and operation of a power cable which may be used to supply power to an electric submersible pumping system downhole into a wellbore. The power cable comprises at least one electrical conductor. Each electrical conductor is insulated with an insulation layer and protected from deleterious fluids by a fluid barrier layer. Further protection is provided by a protective layer disposed around the fluid barrier layer. The protective layer is foamed to provide a cushion layer and to further protect components of the power cable. An armor layer may be disposed around the protective layer.
Claims20
A system for conducting electricity, comprising:
- a cable having:
- a plurality of conductors for conducting electricity;
- an insulation layer in contact with each conductor of the plurality of conductors;
- a fluid barrier layer in contact with each insulation layer;
- a protective layer in the form of a foamed protective layer in contact with each fluid barrier layer;
- and
- an armor layer in contact with the protective layer.
A method for conducting electricity in a harsh environment, comprising:
- providing a conductor for conducting electricity;
- covering the conductor with an insulation layer;
- surrounding the insulation layer with a fluid barrier layer to prevent ingress of deleterious fluids to the conductor;
- placing a foamed protective layer along the fluid barrier layer;
- and
- enclosing the foamed protective layer with an armor layer.
A system, comprising:
- an electric submersible pumping system deployed in a wellbore, the electric submersible pumping system comprising a submersible pump powered by a submersible electric motor;
- and
- a power cable routed downhole along the wellbore and electrically coupled with the submersible electric motor, the power cable comprising:
- three conductors for providing three-phase electrical power to the electric submersible pumping system;
- a plurality of insulation layers with each insulation layer being disposed around a corresponding conductor of the three conductors;
- a fluid barrier layer in contact with each insulation layer;
- a foamed protective layer in contact with the fluid barrier layer, the foamed protective layer comprising a plurality of enclosed gas pockets to is provide cushioning;
- and
- an armor layer surrounding the foamed protective layer.
Dependencies are inferred from the claim text.