Low profile rod pumping unit with pneumatic counterbalance for the active control of the rod string
US9115574B2 · kind B2 · utility
3Cited by
12References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Apr 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18182
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Adaptable systems for a surface pumping unit that includes a low inertia pumping unit mechanism having a pneumatic counterbalance assembly are described, as well as methods for the use of such systems for subterranean fluid recovery. The system is capable of being integrated with well management automation systems, thereby allowing for response to active control commands, and automatically altering and/or maintaining a counterbalance force in the pumping unit by adding or removing air mass from a containment vessel associated with the pumping unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.