Real time telemetry
US9035788B2 · kind B2 · utility
10Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2007 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A real time telemetry system is disclosed for use with a drilling system including a rotary valve 28 controlling the supply of drilling fluid or mud to a downhole tool. The system comprises receiving data to be transmitted, encoding the data as a duration, and controlling the rotation the rotary valve 28 such that the rotary valve 28 is rotated for the said duration at a predetermined rotary speed to cause the formation of pressure fluctuations or waves in the drilling fluid or mud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.