Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system
US6698536B2 · kind B2 · utility
26Cited by
25References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Feb 20, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N2250/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roller cone drill bit is disclosed which includes at least one roller cone rotatably mounted to a bit body. The bit body includes therein a lubricant reservoir adapted to supply lubricant to bearings on which the roller cone rotates about the bit body. The bit includes a sensor adapted to detect drilling fluid contamination of the lubricant. The bit includes a processor/transmitter operatively coupled to the sensor and adapted to communicate signals corresponding to detected contamination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.