Controller and method of controlling a rod pumping unit
US10851774B2 · kind B2 · utility
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18Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2201/1211
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.