Roller cone earth-boring rotary drill bits including disk heels and related systems and methods
US10689911B2 · kind B2 · utility
0Cited by
9References
18Claims
0Family size
Assignee
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Key dates
| Filing date | May 24, 2017 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Oct 20, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Earth-boring rotary drill bits include heel portions exhibiting reduced aggressiveness. Earth-boring rotary drill bits may comprise a bit body and a plurality of roller cones coupled to the bit body. Each roller cone comprises a plurality of rows of cutting elements, and a continuous disk heel located further from an axis of rotation of the roller cone than the at least one row of cutting elements, the continuous disk heel exhibiting a reduced amount of aggressiveness compared to the at least one row of cutting elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.