Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
US6626251B1 · kind B1 · utility
68Cited by
4References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Feb 6, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved drill bit is provided with a sensor for monitoring an operating condition during drilling. A fastener system is provided for securing an erodible ball in a fixed position relative to a flow pathway until a predetermined operating condition is detected by the sensor, and for releasing the erodible ball into the flow pathway to obstruct the flow through at least one bit nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.