Method and apparatus for a subterranean and marine-submersible electrical transmission system for oil and gas wells

1. A structural member comprising:

a conductive electrical conduit for transmission of electrical power or data, said conduit comprising:

a core conductive member comprising a first conductive material, the first conductive material comprising beryllium alloy, the beryllium alloy having an electrical conductivity value greater than 25% International Annealed Copper Standard (IACS) and having a 0.2% offset yield strength greater than 30,000 psi;

a first layer encapsulating the core conductive member, the first layer comprising a dielectric material; and,

a second layer encapsulating the first layer;

said structural member having a length of greater than or equal to 1000 feet and having a tensile strength greater than or equal to a tensile strength sufficient to resist yield under a load of its own weight.

2. The structural member of claim 1 , wherein the second layer comprises a second electrically conductive material.

3. The structural member of claim 2 , wherein the second conductive material comprises beryllium alloy.

4. The structural member of claim 1 , wherein the second layer comprises a doped polymer.

5. The structural member of claim 1 , wherein the first layer comprises amorphous polyimide.

6. The structural member of claim 1 , wherein the core conductive member comprises a beryllium alloy tube, wherein the beryllium alloy comprises a tubular shape with a central cavity.

7. The structural member of claim 1 , wherein the beryllium alloy is copper beryllium alloy.

8. The structural member of claim 1 , wherein the core conductive member comprises a beryllium alloy tube, wherein the beryllium alloy further comprises a tubular shape encapsulating a third electrically conductive material.

9. The structural member of claim 8 , wherein the third electrically conductive material is copper wire.

10. The structural member of claim 1 , wherein the core conductive member comprising beryllium alloy comprises a tubular shape, the tubular-shaped beryllium alloy encapsulating a fourth material.

11. The structural member of claim 10 , wherein the fourth material comprises optical fiber.

12. The structural member of claim 1 , wherein the structural member is substantially free of an additional component providing mechanical strength to the conduit greater than or equal to the combined mechanical strength provided by the core conductive member, the first layer and the second layer.

13. The structural member of claim 1 , wherein the structural member consists essentially of said conductive electrical conduit.

14. The structural member of claim 1 , wherein the structural member consists of said conductive electrical conduit.

15. A method of transmitting electrical power or data to or from a subterranean or submarine environment to or from a second location, the method comprising:

coupling, through a structural member, one or more components in the subterranean or submarine environment to one or more components at the second location, the structural member comprising:

a conductive electrical conduit for transmission of electrical power or data, said conduit comprising:

a core conductive member comprising a first conductive material, the first conductive material comprising beryllium alloy having an electrical conductivity value greater than 25% International Annealed Copper Standard (IACS) and having a 0.2% offset yield strength greater than 30,000 psi;

a first layer encapsulating the core conductive member, the first layer comprising a dielectric material;

a second layer encapsulating the first layer;

said structural member having a length of greater than or equal to 1000 feet and having a tensile strength greater than or equal to a tensile strength sufficient to resist yield under a load of its own weight; and,

transmitting the electrical power or data through the conductive electrical conduit between the one or more components at the second location and the one or more components in the subterranean or submarine environment.

16. The method of claim 15 , wherein the second layer comprises a second electrically conductive material.

17. The method of claim 15 , wherein the electrical power is provided to a submarine environment in the exploration or production of hydrocarbon resources, and the second location is at or above the marine surface.

18. The method of claim 15 , wherein the electrical power is provided to a subterranean environment in the exploration or production of hydrocarbon resources, and the second location is at or above the surface of the earth.

19. The method of claim 15 , wherein the second conductive material comprises beryllium alloy.

20. The method of claim 15 , wherein the second layer encapsulation comprises a doped polymer.

21. The method of claim 15 , wherein the first layer comprises amorphous polyimide.

22. The method of claim 15 , wherein the core conductive member comprises a beryllium alloy tube, wherein the beryllium alloy comprises a tubular shape with a central cavity.

23. The method of claim 15 , wherein the beryllium alloy is copper beryllium alloy.

24. The method of claim 15 , wherein the core conductive member comprises a beryllium alloy tube, wherein the beryllium alloy further comprises a tubular shape encapsulating a third electrically conductive material.

25. The method of claim 24 , wherein the third electrically conductive material is copper.

26. The method of claim 15 , wherein the core conductive member comprising beryllium alloy comprises a tubular shape, the tubular-shaped beryllium alloy encapsulating a fourth material.

27. The method of claim 26 , wherein the fourth material comprises an optical fiber encapsulated in a polymeric material.

28. The method of claim 15 , wherein the conduit is substantially free of an additional component providing mechanical strength to the conduit greater than or equal to the combined mechanical strength provided by the core conductive member, the first layer and the second layer.

29. The method of claim 15 , wherein the structural member consists essentially of said conductive electrical conduit.

30. The method of claim 15 , wherein the structural member consists of said conductive electrical conduit.

31. The method of claim 15 , further comprising the step of powering submersible electrical devices.