Positionable downhole gear box
US9169694B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2013 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | May 25, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The subject matter of this specification can be embodied in, among other things, a tool string positionable in a wellbore that includes a spur gear driven by a source of input rotation, a planetary gearbox having an attachment structure to connect to the spur gear. The gearbox includes a central sun gear, a collection of planet gears disposed in a planet gear carrier disposed around the central sun gear, and a ring gear disposed around the planet gears and planet gear carrier. The attachment structure drives a hydraulic pump or electrical generator at a rotational speed different than a rotational speed of the source of input rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.