Drill bit systems with temperature sensors and applications using temperature sensor measurements
US9297251B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Dec 16, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/013
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit includes a plurality of blades. The blades provide a plurality of cutting elements or teeth arranged on a leading face of the blade. At least one temperature sensor is provided adjacent at least one of the teeth of at least one blade to sense a local temperature of the blade adjacent that tooth. Multiple temperature sensors may be provided adjacent different teeth of a blade or adjacent the teeth of at least two blades, or adjacent multiple teeth of multiple blades. Another temperature sensing element may be provided on a proximal portion of the blade distant from the cutting elements or on the shank of the bit to provide a reference temperature for the drill bit or for the blade. Information obtained by the temperature sensing elements is used to provide information regarding at least one of the drill bit, the drilling environment and the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.