Distributed fiber-optic telemetry for data transmission and real-time location of downhole autonomous sensing devices
US12345153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2022 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Aug 12, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system and method for using a Distributed Acoustic Sensor (DAS) system to receive signals transmitted from remote autonomous sensors and to locate the autonomous sensors are disclosed. The method includes installing a DAS system in a borehole consisting of at least one fiber-optic cable connected to at least one corresponding interrogator, deploying at least one autonomous sensor and conducting at least one measurement. The methods also include encoding the at least one measurement in at least one encoded acoustic signal, transmitting the at least one encoded acoustic signal to the at least one fiber-optic cable, and detecting the at least one encoded acoustic signal with the DAS system. Furthermore, the methods include recording the at least one encoded acoustic signal received by the DAS system at a surface location and processing the at least one encoded acoustic signal with a processing unit to decode and obtain the at least one measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.