Expandable earth-boring wellbore reamers and related methods
US8453763B2 · kind B2 · utility
13Cited by
50References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jul 13, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position. In some embodiments, the tools may include a formation-engaging surface comprising a gage area. In other embodiments, the tools may include a radially recessed area extending from a back edge of the formation-engaging surface. Methods for removing such expandable reamer tools from a borehole are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.