Rotary downlink system
US7298285B2 · kind B2 · utility
4Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Apr 9, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for downlink communication with a downhole tool having a mud-powered downhole motor that includes receiving a sensor signal related to a rotational speed of a rotor in the mud-powered downhole motor, and interpreting the sensor signal to derive a downlink signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.