Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
US9677343B2 · kind B2 · utility
0Cited by
135References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 22, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Sep 22, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/55
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fixed bladed drill bit has a working face that includes a plurality of blades converging at a center of the working face and diverging towards a gauge of the bit, each blade having a leading face and a trailing face, and at least one row of cutting elements disposed on at least one of the plurality of blades proximate to the leading face of the blade, where the row of cutting elements includes at least one pointed cutting element having a cutting end with a rounded apex and at least one shearing cutter. The at least one shearing cutter includes a first shearing cutter positioned proximate to a periphery of the working face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.