Tubing retrievable safety valve assembly with secondary flapper and seat
US12291941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2022 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Nov 29, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubing retrievable safety valve assembly and related methods are disclosed herein. The assembly includes a primary flapper, a secondary flapper, a flow tube, and a protective sleeve. The flow tube is shiftable between a downhole position that holds the primary flapper in an open position and an uphole position that allows the primary flapper to move to a closed position. The protective sleeve, when positioned in an uphole position, holds the secondary flapper valve in an open position. The protective sleeve is shiftable to a downhole position to allow the secondary flapper to move to a closed position, for example, upon failure of the primary flapper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.