Downhole power generation using hydraulic flow regulation
US9574425B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2012 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods of downhole power generation are disclosed, which provide for the generation of electrical power in a downhole environment by the use of an electrical generator coupled to a hydraulic circuit that receives energy from a source in the downhole environment. The hydraulic circuit can receive energy from flowing drilling fluid and/or from kinetic energy of one or more portions of the drill string. A direct or indirect coupling can be used to transfer energy from the downhole environment to a pump in the hydraulic circuit, which can act as a hydraulic flow source, providing flow through a flow regulation device or control circuit. The hydraulic fluid under such control can then be used to turn a hydraulic motor, which is used to turn an electric generator for the generation of electricity for downhole tools such as logging tools, related telemetry, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.