Electric safety valve with well pressure activation
US11248441B2 · kind B2 · utility
5Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Oct 10, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety valve may include: an outer housing comprising a central bore extending axially through the outer housing; a flow tube including: a translating sleeve; and a flow tube main body disposed within the translating sleeve, wherein the flow tube main body has an upper end and a lower end; a piston operable to transmit a force to the translating sleeve; a flapper valve disposed on a distal end of the outer housing; and an electromagnet assembly operable to maintain the safety valve in an open state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.