Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
US6230822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1998 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jan 23, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of said bit body; at least one temperature sensor for monitoring at least one temperature condition of said improved drill bit during drilling operations; and at least one temperature sensor cavity formed in said bit body and adapted for receiving, carrying, and locating said at least one temperature sensor in a particular position relative to said bit body which is empirically determined to optimize temperature sensor discrimination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.