Method of seismic exploration
US4293935A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1978 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jun 16, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Seismic exploration on land and on ocean beds is performed by emitting vibrational acoustic signals of long time-duration within a desired frequency spectrum at one or a number of points, the signals corresponding to the waves received from the reflectors being then processed. The method further consists in forming the complex spectrum of the received signal corresponding to the emitted signal in respect of each frequency band, in forming the complex spectrum of a reference of the emitted signal in respect of each frequency band and in dividing the complex spectrum of the received signal by the complex spectrum of the reference of the emitted signal, at least an external portion of each complex spectrum being eliminated in the case of each complex spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.