Back pressure valve
US11454074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Dec 7, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve assembly for use in a wellbore includes a housing defining a bore that extends axially therethrough, a valve seat positioned in the housing, and a valve element movably positioned in the housing. The valve seat and the valve element are concentric to one another, but non-concentric with the housing, such that a centerline defined through the valve seat and the valve element is offset from a central axis of the housing. The valve element is linearly actuatable relative to the housing between a closed position in which the valve element engages the valve seat and blocks the bore and an open position in which the valve element permits flow of fluid therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.