Method for determining horizontal geophone orientation in ocean bottom cables
US6205403A · kind A · utility
29Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method is provided for determining the orientation or horizontal geophones used in marine seismic surveying. First-arrival signals are processed by rotating a coordinate system mathematically until the signal from the transverse receiver has minimum energy. The amount of rotation is used to calculate, from the known azimuth from the source, any misalignment of the horizontal geophone as the receiver is placed on the ocean bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.