Apparatus and methods for creation of down hole annular barrier
US7798225B2 · kind B2 · utility
79Cited by
134References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Nov 26, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/117
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.