On the enhancement of low frequencies in marine seismic data

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On the enhancement of low frequencies in marine seismic data

Conference Paper (2016)

Author(s)

Guus Berkhout (External organisation)

Gerrit Blacquière (TU Delft - Civil Engineering & Geosciences)

Research Group

Applied Geophysics and Petrophysics

DOI related publication

https://doi.org/10.1190/segam2016-13847470.1 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:c6c73efc-8f28-4d56-899c-214c3d664242

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Publication Year

2016

Language

English

Research Group

Applied Geophysics and Petrophysics

Pages (from-to)

162-167

Event

SEG International Exposition and 86th Annual Meeting (2016-10-16 - 2016-10-21), Dallas & Kay Bailey Hutchison Convention Center, Dallas, United States

Downloads counter

147

Abstract

Low frequencies are most important in seismic imaging. They enhance the resolution, penetrate deeper and they are indispensable in impedance estimation. In this paper a fourstep approach for enhancing the low frequencies in marine acquisition and (pre)processing is proposed: 1) positioning the sources and detectors at the optimum depth, 2) carrying out proper deghosting and 3) (pre)processing the low frequencies separately. In step 4), the missing ultra-low frequency information (trend) comes from the velocity distribution and from modern gravity gradiometry.