Hybrid roller cone and junk mill bit
US10337272B2 · kind B2 · utility
0Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2017 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Feb 25, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hybrid bit for use in a wellbore includes: a body having a shank for connection to a drilling motor or drill pipe and a plurality of legs attached to the shank; and a plurality of cutting structures. The cutting structures include a roller cone mounted to a first one of the legs and a fixed mill mounted to a second one of the legs and including a pad dressed with a cermet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.