Oil well plug and abandonment method
US8291977B2 · kind B2 · utility
4Cited by
47References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of severing a well string that extends into an oil well from an oil platform with a deck includes supporting upper and lower sections of the well string, the lower section supported at the platform deck with a deck located string support. A shear mechanism cuts the well string at a position that can be above the deck located string support. The upper section is then lifted a selected distance and the deck located string support again supports the string at a position below the cut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.