Method for detecting breaks in geophone cables for seismic data acquisition system
US5303202A · kind A · utility
6Cited by
2References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 1, 1993 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Sep 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/164
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for a seismic data acquisition system (FIG. 1) for determining whether a geophone circuit break is in a seismic cable conductor pair (22) or in a takeout conductor pair (26). A resistor (32, 32A) is positioned across the takeout conductor pair (26) for a geophone group (20). An impedance measuring device (30) determines if the break is in the seismic cable conductor pair (22) by measuring infinity for an open circuit, or by measuring the impedance of the resistor (32, 32A) if the break is in the takeout conductor pair (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.