Fixed cutter stabilizing drill bit
US10753155B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Mar 10, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/55
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bit for drilling a wellbore includes: a body; and a cutting face including: a blade protruding from the body; and a row of cutters, each cutter including: a substrate mounted in a pocket formed adjacent to a leading edge of the blade; and a cutting table made from a superhard material, mounted to the substrate, and having a working face. A first subset of the row of cutters is oriented at a negative side rake angle. A second subset of the row of cutters is oriented at a zero or slightly positive side rake angle. The first and the second subsets are alternating. An innermost cutter of the first subset has a maximum absolute value of the negative side rake angle. The absolute value negative side rake angles of the rest of the cutters decrease as their distance from a center of the cutting face increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.