Method of polarity determination of marine hydrophone streamers
Abstract
Abstract Method of the determination of the polarity of marine seismic hydrophone streamers whereby detectors in said streamers are accurately and quickly excited. Signals from said detectors are recorded before deployment of said streamer into the water. This invention provides for the use of a low frequency sound source in the air near a hydrophone streamer while onboard a seagoing vessel. The low frequency of the pressure source is adequately selected to allow similar responses from the receiving detectors within the hydrophone streamer. In order to achieve this similarity of response, the wavelength emitted from the source must be more than twice the difference of subtracting the maximum source-to-detector distance and the minimum source-to-detector distance of the streamer, as confined compactly onboard.
Inventors
- 👤 W Mayne
- 👤 R Quay
Bibliographic Details
Claims Analysis
Total Claims: 9References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |