Application of super-virtual seismic refraction interferometry to enhance first arrivals: A case study from Saudi Arabia

Abdulrahman Abdullatif Abdulrahman Alshuhail, Ali Aldawood, Sharif Hanafy

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Complex near-surface anomalies are one of the main onshore challenges facing seismic data processors. Refraction tomography is becoming a common technology to estimate an accurate near-surface velocity model. This process involves picking the first arrivals of refracted waves. One of the main challenges with refraction tomography is the low signal-to-noise ratio characterizing the first-break waveform arrivals, especially for the far-offset receivers. This is especially evident in data recorded using reflection acquisition geometry. This low signal-to-noise ratio is caused by signal attenuation due to geometrical spreading of the seismic wavefield, near-surface-generated noise, and amplitude absorption. Super-virtual refraction interferometry improves the quality of the first-break picks by enhancing the amplitude of the refracted waves and attenuating the amplitude of the random noise.
Original languageEnglish (US)
Pages (from-to)34-39
Number of pages6
JournalThe Leading Edge
Volume31
Issue number1
DOIs
StatePublished - Jan 2012

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