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Harmonic distortion reduction on seismic vibrators

Zhouhong Wei and Thomas F. Phillips
Harmonic distortion reduction on seismic vibrators
Leading Edge (Tulsa, OK) (March 2010) 29 (3): 256-261

Abstract

To improve seismic resolution using vibroseis, vibrators must output the ground-force energy with minimum harmonic distortion. Four main sources within the vibrator system cause the ground force to suffer severe harmonic distortion: the nonlinear servo-valve flow-pressure characteristics, the servo-valve characteristics near null, the fluctuations in the hydraulic pressure, and the nonlinear contact-stiffness between the baseplate and the ground. Modeling was undertaken to investigate and quantify harmonic distortion from each source. As a result, three modifications have been made to reduce the harmonic distortion of the ground force.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 29
Serial Issue: 3
Title: Harmonic distortion reduction on seismic vibrators
Affiliation: ION Geophysical Corporation, United States
Pages: 256-261
Published: 201003
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 11
Accession Number: 2010-035127
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201020
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