Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1991-01-03
1992-09-01
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
367144, 367154, 181110, 181120, G01V 138
Patent
active
051445883
ABSTRACT:
The invention provides a seismic transmitter source system which includes a floatation device that contains a plurality of air tight chambers in a serial connection. A separate one way check valve is placed between each adjacent pair of the chambers. Pressurized air is continuously supplied to an end chamber. The one-way check valves enable the air to pass to the remaining chambers in one direction. A transmitter subarray containing a plurality of spaced apart transmitters is suspended from the floatation device by means of severasl pivotly connected links. The front end of the transmitter array is connected to a point near the front end of the floatation device. During operation, the seismic transmitter source system is pulled from a tow point located at the front of the floatation device, pulling both the floatation device and the transmitter subarray in substantially a horizontal straight line position while maintaining the transmitter subarray at a near constant depth below the water surface.
REFERENCES:
patent: 4087780 (1978-05-01), Itria et al.
patent: 4716553 (1987-12-01), Dragsund et al.
patent: 4719987 (1988-01-01), George, Jr. et al.
patent: 4745583 (1988-05-01), Motal
patent: 4956822 (1990-09-01), Barber et al.
Curto Rick A.
Johnston Otis A.
Eldred J. Woodrow
Madan Paul S.
Western Atlas International Inc.
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