Hydraulic pumping unit with a variable speed triplex pump
US4066123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Dec 23, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/103
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention is a hydraulic pumping unit which uses a cyclone feed pump means to vary the speed of the above-ground pump, while still providing proper cleaning of the power fluid for the downhole pump. The ability to conveniently change the speed of the above-ground pump allows the speed of the pump to be reduced whenever well conditions make such a reduction appropriate, and this provides a very substantial reduction in the cost of power for the prime mover (typically an electric motor). In addition to the cyclone feed pump and a speed control means to vary the speed at which the prime mover drives the above-ground pump, this invention uses a flowback line connected from the cyclone overflow to the feed pump inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.