Coring apparatus and methods
US8689903B2 · kind B2 · utility
2Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2011 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B25/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coring apparatus is provided, which apparatus, in one exemplary embodiment, includes a rotatable member coupled to a drill bit configured to drill a core from a formation, a substantially non-rotatable member in the rotatable member configured to receive the core from the formation, and a sensor configured to provide signals relating to rotation between the rotatable member and the substantially non-rotatable member during drilling of the core from the formation, and a circuit configured to process the signals from the sensor to estimate rotation between the rotatable member and the non-rotatable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.