Electrical conveyance for downhole tools

1. An electrical conveyance system, comprising:

an electrical power manifold;

a drill string coupled to the electrical power manifold;

a multi-conductor conduit extending through an interior of the drill string;

a stinger assembly extending from an exterior of the electrical power manifold to an interior of the electrical power manifold to couple the multi-conductor conduit to an electrical power source, the stinger assembly including:

a stationary cable;

a rotating cable; and

a slip ring coupling the stationary cable and the rotating cable; and

a pulsed-power drill bit coupled to the drill string and the multi-conductor conduit.

2. The electrical conveyance system of claim 1 , further comprising a top drive coupled to the electrical power manifold.

3. The electrical conveyance system of claim 2 , wherein a lower connection of the top drive is coupled to an upper connection of the electrical power manifold.

4. The electrical conveyance system of claim 2 , wherein an upper connection of the top drive is coupled to a lower connection of the electrical power manifold.

5. The electrical conveyance system of claim 1 , wherein the multi-conductor conduit further includes a plurality of centralizing fins separating an outer wall of the multi-conductor conduit from an inner wall of the drill string to create an annulus between the outer wall of the multi-conductor conduit and the inner wall of the drill string.

6. The electrical conveyance system of claim 1 , wherein the electrical power manifold further includes a seal positioned at an opening in a housing of the electrical power manifold.

7. The electrical conveyance system of claim 1 , wherein the electrical power manifold further comprises:

a connector coupling the multi-conductor conduit to the stinger assembly; and

an actuator coupled to the stinger assembly to raise and lower the connector such that the connector couples the multi-conductor conduit and the stinger assembly in a lowered position and decouples the multi-conductor conduit and the stinger assembly in a raised position.

8. The electrical conveyance system of claim 1 , wherein the electrical power manifold further includes an idler gear coupling an upper connection formed on an uphole end of the housing and a lower connection formed on a downhole end of the housing.

9. The electrical conveyance system of claim 1 , wherein the electrical power manifold further includes a kelly port in a housing of the electrical power manifold for coupling to a kelly hose.

10. The electrical conveyance system of claim 1 , wherein the stinger assembly further includes a cleaning system at an end of the stinger assembly where the stinger assembly couples to the multi-conductor conduit.

11. The electrical conveyance system of claim 1 , wherein the multi-conductor conduit is arranged in a coaxial design.

12. An electrical power manifold, comprising:

a housing;

a chamber formed within the housing;

an upper connection formed on an uphole end of the housing;

a lower connection formed on a downhole end of the housing; and

a stinger assembly extending from an exterior of the housing to an interior of the housing to couple with a multi-conductor conduit in a drill string, the multi-conductor conduit coupling a pulsed-power drill bit to an electrical power source, the stinger assembly including:

a stationary cable;

a rotating cable; and

a slip ring coupling the stationary cable and the rotating cable.

13. The electrical power manifold of claim 12 , further comprising a seal positioned at an opening in the housing.

14. The electrical power manifold of claim 12 , further comprising:

a connector coupling the multi-conductor conduit to the stinger assembly; and

an actuator coupled to the stinger assembly to raise and lower the connector such that the connector couples the multi-conductor conduit and the stinger assembly in a lowered position and decouples the multi-conductor conduit and the stinger assembly in a raised position.

15. The electrical power manifold of claim 12 , further comprising an idler gear coupling the upper connection and the lower connection.

16. The electrical power manifold of claim 12 , further comprising a kelly port in the housing for coupling to a kelly hose.

17. The electrical power manifold of claim 12 , wherein the stinger assembly further includes a cleaning system at an end of the stinger assembly where the stinger assembly couples to the multi-conductor conduit.

18. The electrical power manifold of claim 12 , wherein a lower connection of a top drive is coupled to the upper connection.

19. The electrical power manifold of claim 12 , where an upper connection of a top drive is coupled to the lower connection.

20. The electrical power manifold of claim 12 , wherein the multi-conductor conduit is arranged in a coaxial design.

21. A method for conveying electrical power to a downhole tool, comprising:

installing a drill string in a wellbore, the drill string containing a multi-conductor conduit extending through the interior of the drill string;

coupling a downhole end of the drill string to a pulsed-power drill bit and an uphole end of the drill string to an electrical power manifold;

changing the position of a switch to selectively supply power to the electrical power manifold or to a top drive coupled to the electrical power manifold;

supplying power to the electrical power manifold; and

performing a subterranean operation using the pulsed-power drill bit.

22. The method of claim 21 , further comprising actuating an actuator on the electrical power manifold to couple a stinger assembly in the electrical power manifold to the multi-conductor conduit.

23. The method of claim 21 , further comprising pumping a drilling fluid into the wellbore.

24. The method of claim 21 , wherein installing the drill string in the wellbore includes powering the top drive to rotate the drill string.