System to enhance telemetry communication in well intervention operation
US11078782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 1, 2020 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Jan 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/108
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
System and method for telemetry communication provide enhance noise cancellation in well intervention operations. The system and method employ a surface panel operable to transmit and receive a telemetry signal through a wireline extending along a wellbore. A power converter receives and converts electrical power from the cable to operating power for a downhole tractor motor. A modem coupled to the cable processes and provides the telemetry signal to a microcontroller. A noise signal pathway provides a noise signal from the tractor motor directly to the microcontroller, the noise signal representative of electrical noise generated by the downhole tractor. The microcontroller performs noise cancellation on the telemetry signal to produce a de-noised telemetry signal by obtaining an estimated noise channel transfer function for the noise signal, and applying the estimated noise channel transfer function and the noise signal to the telemetry signal from the modem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.