Coring apparatus and methods to use the same
US9447683B2 · kind B2 · utility
1Cited by
24References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2014 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B25/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.