Fixed bladed bit that shifts weight between an indenter and cutting elements
US8616305B2 · kind B2 · utility
7Cited by
126References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2009 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 23, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one aspect of the present invention, a downhole fixed bladed bit comprises a working surface comprising a plurality of blades converging at a center of the working surface and diverging towards a gauge of the bit, at least on blade comprising a cutting element comprising a superhard material bonded to a cemented metal carbide substrate at a non-planer interface, the cutting element being positioned at a positive rake angle, and the superhard material comprising a substantially conical geometry with an apex comprising a curvature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.