ROPE-CABLE WITH LIGHT-WEIGHT PLASTIC CORE TO HANDLE CARGOES AND CHEMICAL REAGENTS IN OIL AND GAS WELLS Russian patent published in 2009 - IPC D07B1/12 

FIELD: oil-and-gas industry, handling equipment.

SUBSTANCE: proposed rope-cable comprises plastic core and two cable lays made from steel galvanised wire. Aforesaid core has one, two or more holes arranged regularly both across rope-cable cross section and along its length. Armor inner layer is made by cable lay consisting of 10 to 24 wires with diametre of 0.6 mm to 1.6 mm, while outer layer consists of cable lay made up of 6 to 24 wires with diametre varying from 1.0 mm to 2.0 mm. Cable lay wires are laid densely inner layer and with gaps in outer layer.

EFFECT: higher flexibility, possibility to use for transfer of fluid and gaseous components and to lay current conductors in cable core holes.

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