Coring apparatus and methods to use the same
US8210284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Nov 3, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B25/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coring apparatus that includes a housing that is selectively pivotable in a downhole tool, a rotatable coring bit, a gear drive rotatively coupled to the housing, and a key member configured to engage an inner surface of the gear drive and an outer surface of the coring bit and configured to maintain a rotational relationship between the coring bit and the gear drive. A pinion is rotatively coupled to the housing and configured to engage an outer surface of the gear drive, and a motor is affixed to the housing and operatively coupled to the pinion. The gear drive, the key member, the pinion and the motor are configured to pivot in unison with the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.