Downhole power generation assembly
View Patent ↗In one aspect of the invention, a downhole power generation assembly has a downhole tool string component comprising a bore. A collar is rotatably supported within the bore and has a centralized fluid passageway and a plurality of turbine blades. The collar is connected to a power generation element such that rotation of the collar moves the power generation element and induces an electrical current.
1. A downhole power generation assembly, comprising:
a downhole tool string component comprising a bore;
a first collar rotatably supported within the bore and comprising a centralized fluid passageway and a plurality of fluid engaging blades;
the first collar being connected to a power generation element such that rotation of the first collar moves the power generation element and induces an electrical current;
wherein an end of the first collar is connected to a second collar comprising the power generation element.
2. The assembly of claim 1 , wherein the power generation element is a magnet or a coil.
3. The assembly of claim 1 , wherein the power generation element is attached directly to the second collar.
4. The assembly of claim 1 , wherein the power generation element is a magnet adapted to induce a current in a coil disposed proximate the first collar where the magnet moves.
5. The assembly of claim 1 , wherein the bore of the first collar narrows proximate an end of the first collar.
6. The assembly of claim 1 , wherein the fluid engaging blades are attached to an outer surface of the first collar.
7. The assembly of claim 1 , wherein the fluid engaging blades are attached within the centralized fluid passageway.
8. The assembly of claim 1 , wherein the first collar comprises at least one perforation connecting the outer surface to the centralized fluid passageway.
9. The assembly of claim 8 , wherein the perforation is a slot angled with respect to a central axis of the downhole tool string component.
10. The assembly of claim 8 , wherein the perforation is adapted to allow fluid to be sucked into the centralized fluid passageway.
11. The assembly of claim 1 , wherein the bore proximate the first collar increases in diameter.
12. The assembly of claim 1 , wherein the centralized fluid passageway is flush with a primary diameter of the downhole tool string component.
13. The assembly of claim 1 , wherein the first collar is rotatably supported within the bore through a plurality of bearings.
14. The assembly of claim 13 , wherein at least one of the bearings is rotatably supported by an axel.
15. The assembly of claim 14 , wherein at least one of the axels forms an angle with a central axis of the downhole tool string component.
16. The assembly of claim 1 , wherein the first collar is substantially coaxial with a central axis of the downhole tool string component.
17. The assembly of claim 1 , wherein the power generation element is in communication with a battery.
18. The assembly of claim 1 , wherein the power generation element is in communication with an electronic device.
19. The assembly of claim 1 , wherein the downhole tool string component comprises a communication coupler proximate an end of the downhole tool string component and in electrical communication with the power generation element.