Valve apparatus having dissolvable or frangible flapper and method of using same
US10309193B2 · kind B2 · utility
2Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2017 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | May 22, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bridge plug for use in a wellbore having an anchoring system to grip the inner surface of the surrounding wellbore, as well as a sealing system or packing element to seal against the inner surface. A hinged flapper permits flow of fluid in one axial direction through a central through bore, but can selectively contact against a seat to create a fluid pressure seal and prevent fluid flow through said central through bore in an opposite axial direction. The flapper can be manufactured of frangible material and/or dissolvable material, permitting selective removal of the flapper when desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.