Flapper lock open apparatus
US6684958B2 · kind B2 · utility
18Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Apr 15, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Various techniques for holding open an SSSV using expansion technology are disclosed. A sleeve is delivered to the SSSV and expanded mechanically or hydraulically to deposit the deformed sleeve in position over a flapper or against a flow tube holding the flapper in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.