Cables with stranded wire strength members
AssigneeSchlumberger Technology Corporation
InventorJoseph Varkey
Life of this patent
Estimating the term…
Abstract
High strength cables formed from strength members. The strength members are formed from bimetallic filament wires which may be encased within a jacket of polymeric material. The bimetallic filament wires wherein the filaments include a high strength core and a corrosion resistant alloy clad forming the outer layer of the filament. The strength members may be used individually, as a central strength member, or even layered around a central axially positioned component or strength member, to form a layer of strength members. Cables of the invention may be of any practical design, including monocables, coaxial cables, quadcables, heptacables, slickline cables, multi-line cables, suspension cables, and the like.
Claims12
A cable comprising:
- a. a central component;
- and,
- b. a layer of strength members, the layer comprising at least three (3) strength members, wherein the layer is disposed adjacent the central component at a lay angle, and wherein each strength member comprises;
- i. a central filament, and
- ii. at least three (3) filaments helically disposed adjacent the central filament;
- wherein at least one of the filaments comprises a high strength core and a corrosion resistant alloy clad, the corrosion resistant alloy forming the outer layer of the at least one filament, and wherein the high strength core is steel and the corrosion resistant alloy clad is an alloy comprising nickel in an amount from about 10% to about 60% by weight of total alloy weight, chromium in an amount from about 15% to about 30% by weight of total alloy weight, molybdenum in an amount from about 2% to about 20% by weight of total alloy weight, and cobalt in an amount up to about 50% by weight of total alloy weight.
Dependencies are inferred from the claim text.