Earth-boring tools utilizing asymmetric exposure of shaped inserts, and related methods
US10612311B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Apr 25, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/567
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An earth-boring tool includes a body, blades extending longitudinally and generally radially from the body, and primary cutting elements located on each blade. The earth-boring tool may include a group of at least two adjacent blades comprising the primary cutting elements and one or more first shaped inserts located rotationally behind the primary cutting elements, and one or more additional blades comprising the primary cutting elements and one or more second shaped inserts located rotationally behind the primary cutting elements, the second shaped inserts exhibiting a greater exposure relative to the first shaped inserts. Distribution of the second shaped inserts relative to the longitudinal axis may be asymmetric with respect to the longitudinal axis of the body. Methods include drilling a subterranean formation including engaging a formation with the primary cutting elements, the first shaped inserts, and the second shaped inserts of the earth-boring tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.