Seismic streamer communication system
US4912684A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/201
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A communication system for a seismic streamer by which all power and data signals are inductively coupled to the cable leveling devices or instrument pods disposed along the streamer cable. A high permeability ring of magnetic material is dispose around the streamer, and a coil is wound around a segment of the core and connected to circuitry within the bird. The coil can be part of a resonant circuit. Power signals transmitted along the streamer are inductively coupled via the ring core and associated coil to each bird to provide charging of a battery source in the bird. Control signals transmitted along the streamer are coupled via the ring core and coil to the electronics via the ring core and coil to the streamer for transmission to a receiving site. Alternative embodiments are also disclosed in which inductive coupling structures include a portion within the streamer in efficient coupling relationship for power and data transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.