Print Email Facebook Twitter Systematic detection and correction of instrument-related time shifts using seismic interferometric surface waves Title Systematic detection and correction of instrument-related time shifts using seismic interferometric surface waves Author de Laat, J. Weemstra, C. Verdel, A. Jousset, P. Blanck, H. Publication year 2018 Abstract Timing errors are a notorious problem in seismic data acquisition and processing. A technique is presented that allows such time shifts to be detected and corrected in a systematic fashion. The methodology relies on virtual-source responses retrieved through the application of seismic interferometry (SI). In application to recordings of ambient seismic noise, SI involves temporal averaging of time-windowed crosscorrelation measurements. Because surface waves dominate the ambient seismic field, the retrieved interferometric responses are typically also dominated by surface waves. Under favorable conditions, these interferometric responses therefore approach the surface-wave part of the medium's Green's function. Additionally, however, its time-reverse is also retrieved under those conditions. This implies time-symmetry of the time-averaged receiver-receiver crosscorrelations. It is this time-symmetry that is exploited in this study. By comparing the arrival time of the interferometric surface waves at positive time to the arrival time of the interferometric surface waves at negative time for a large a number of receiver-receiver pairs, relative timing errors are determined in a least-squared sense. The proposed methodology is validated using both synthetic data and field data. The results hold particular promise for time-lapse (4D) seismic surveys. © 2018 Society of Petroleum Engineers. All rights reserved. Subject Data acquisitionData handlingInterferometrySeismologyAmbient seismic noiseCross-correlation measurementsCross-correlationsFavorable conditionsRelative timingSeismic data acquisitionsSeismic interferometriesTemporal averagingSurface waves To reference this document use: http://resolver.tudelft.nl/uuid:9481b82b-da62-498c-b5ea-861ab2f33cb0 DOI https://doi.org/10.3997/2214-4609.201801097 TNO identifier 867810 Publisher European Association of Geoscientists and Engineers, EAGE ISBN 9789462822542 Source 80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition, 80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition, 11 June 2018 through 14 June 2018 Bibliographical note Sponsor: AkerBP;ExxonMobil;Saudi Aramco;Shell;Total Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.