Hybrid gas lift system
US11441401B2 · kind B2 · utility
1Cited by
17References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2021 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Feb 9, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Liquid is unloaded from a well with a hybrid gas lift system that includes a lift gas source and valves for injecting lift gas into production tubing. The types of valves include pressure production operated (“PPO”) valves and a surface operated valve. Pressure inside the production tubing is measured to monitor operation of the PPO valves, and identify if the PPO valves are experiencing and anomaly, such as multi-pointing or chattering. The surface operated valve is selectively actuated to correct anomalous operation of the PPO valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.