Overshot with dynamic seal feature
US8590613B2 · kind B2 · utility
1Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Dec 31, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An overshot has an articulated seal that can be set against the fish when the fish is engaged by the tool. The seal can be actuated from swelling due to exposure to well fluid or mechanically or hydraulically from the string that supports it. The use of spears or overshots with the articulated seal feature is contemplated. If a swelling design is used it can respond to water or hydrocarbons that are found at the subterranean location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.