Remote digitization of electromagnetic telemetry signal
US11905827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Apr 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/001
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digitizing apparatus for transmitting electromagnetic telemetry signals to facilitate drilling operations comprises a local receiver and one or more remote transmitters. A method uses the remote transmitter to measure an electric potential between a pair of ground stakes that are positioned at some distance away from the local receiver. The local receiver is coupled to a surface receiver that is located at or near a drilling rig. The remote transmitter converts the electric potential into a digital signal and transmits the digital signal wirelessly to the local receiver. The local receiver then converts the digital signal into an analog signal that is provided to the surface receiver for processing. The remote transmitter and local receiver may comprise GPS clocks to synchronize the signals to maintain a constant phase shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.