Method and apparatus for managing annular fluid expansion and pressure within a wellbore
US9835009B2 · kind B2 · utility
7Cited by
10References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Mar 25, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/07
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well, well head, drilling and completion system, and method for relieving pressure buildup between concentric casing annuli. The well head includes casing hangers and a tubing hanger that may include annular pressure relief conduits formed therein, which selectively vent casing annuli to the interior of the production tubing. Annular pressure relief valves are located within the annular pressure relief conduits, which may open and/or shut based on pressure, temperature, or elapsed time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.