Electro-hydraulic high-pressure oilfield pumping system
US11891884B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2020 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Sep 14, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electro-hydraulic high-pressure oilfield pumping system includes a fracturing (frac) pump and a primary electric motor as a prime mover that delivers power to the frac pump. The primary electric motor may be a constant speed AC (alternating current) motor. A hydraulic starting motor may rotate a shaft of the primary electric motor to achieve or approximate its fixed rated speed before the primary electric motor is energized. A slow frac hydraulic motor may rotate the shaft of the primary electric motor as a passive torque transmission device that delivers power in a downstream direction through a transmission and to the frac pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.