Downhole pump speed control
US4076457A · kind A · utility
12Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Sep 17, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B47/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This is a method and apparatus for controlling a downhole, hydraulically actuated pump. Two fluid flow monitoring means generate signals which are a function of the power fluid flow rate to the downhole pump and the return fluid flow rate from the well. An automatic controller causes the power fluid flow rate to be maintained essentially directly proportional to the return flow. Thus, the power fluid flow is not varied in the opposite direction of any change in return flow to maintain the return fluid flow constant, but conversely, is changed in a manner which will tend to accentuate any changes in the return fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.