Debris preventing downhole air lock device and method
US10584557B2 · kind B2 · utility
1Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2018 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Nov 15, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An air lock device for sealing a casing located inside a well, the air lock device including a body having a bore and configured to be attached with each end to the casing; a moving element located inside the bore; and a blocking element connected to the moving element, the blocking element preventing a fluid to pass through the bore of the body. The moving element forms an inner chamber with the body in which the blocking element is trapped after the blocking element is punctured by the moving element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.