Electrical cables with stranded wire strength members
AssigneeSchlumberger Technology Corporation
InventorsJoseph P. Varkey, Garud Sridhar
Life of this patent
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Abstract
Disclosed are high strength wellbore electric cables, which are formed from a plurality of strength members. The strength members are formed from several stranded filament wires which may be encased within a jacket of polymeric material. The strength members may be used 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, etc., and have improved resistant to corrosion, torque balancing, and gas migration from a wellbore to the surface.
Claims19
A wellbore electrical cable comprising:
- a. a central component;
- and,
- b. an inner layer of strength members, the inner layer comprising at least three (3) strength members, wherein the inner layer is disposed adjacent the central component at a lay angle, and wherein each strength member comprises;
- i. a central filament,
- ii. at least three (3) filaments helically disposed adjacent the central filament, and
- iii. a polymer jacket encasing the central filament and filaments disposed adjacent the central filament and filling interstitial space between the filaments;
- and
- c. a contiguous polymer jacket matrix encasing and bonding the strength members and the central component.
Dependencies are inferred from the claim text.