Grooved expandable recess shoe and pipe for deployment of mechanical positioning devices
US7730955B2 · kind B2 · utility
8Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2008 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/09
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A first, expandable casing member, in an unexpanded state, is provided with a lower axial end that has a radially expanded upset or recess shoe and a locating profile. The first casing member is run into a wellbore, expanded, and secured in place within the wellbore. A second expandable casing member is then provided in an unexpanded state and disposed into the wellbore through the first casing member using a running tool. The second casing member is located with respect to the first casing member and expanded using an expansion member carried by the running tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.