Frangible core barrel
US9540896B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jun 6, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B25/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coring assembly comprises an outer barrel coupled to a coring bit. An inner barrel is disposed within the outer barrel. An inner sleeve is disposed within the inner barrel and includes at least one frangible region that allows the inner sleeve to break so that coring operations can continue after the occurrence of a core jam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.