Rod pumping unit and method of operation
US10900481B2 · kind B2 · utility
1Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2016 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Oct 21, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A controller for operating a prime mover of a rod pumping unit includes a processor configured to operate the prime mover over a first stroke and a second stroke. The controller is further configured to compute a first motor torque imbalance value for the first stroke and engage adjustment of a counter-balance. The controller is further configured to estimate a second motor torque imbalance value for the second stroke. The controller is further configured to disengage adjustment of the counter-balance during the second stroke upon the second motor torque imbalance value reaching a first imbalance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.