Determination of reflectivity and water depth for firing marine

Details Determination of reflectivity and water depth for firing marine Determination of reflectivity and water depth for firing marine

1977-10-25

1979-03-27

Wilbur, Maynard R.

Communications: electrical

Selective

Having indication or alarm

181110, 181111, 181120, G01V 104, G01V 138

Patent

active

041468716

ABSTRACT:
In marine seismic exploration, seismograms recording reflected energy generated from the firing of a seismic source are used to measure the characteristics of the medium through which the energy passes. These measurements are converted into control parameters for an array of seismic sources. When the array is fired under control of these parameters, seismograms having enhanced reflections are produced. As an example, at least one seismic source is fired to produce seismograms which are used in the measurement of water bottom reflectivity and water depth. The measured reflectivity and water depth are converted into a time domain operator representative of the inverse of the reverberation distortion in the water layer. An array of sources is then fired in a sequence which produces an acoustic pressure wave having the inverse time domain characteristics.

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"Water Reverberations-Their Nature and Eliminations", Geophysics, vol. 24, No. 2, Apr. 1959, pp. 233-261, by M. Backus.
"Spectra of Water Reverberations for Primary and Multiple Reflections", Geophysics, vol. 37, No. 5, Oct. 1972, pp. 788-796, by Pflueger.

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