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Seismic interferometry experiment in a shallow cased borehole using a seismic vibrator source‡

2010; Wiley; Volume: 59; Issue: 3 Linguagem: Inglês

10.1111/j.1365-2478.2010.00933.x

1365-2478

Flávio Poletto, Lorenzo Petronio, Biancamaria Farina, Andrea Schleifer,

Geophysics and Sensor Technology

Geophysical ProspectingVolume 59, Issue 3 p. 464-476 Seismic interferometry experiment in a shallow cased borehole using a seismic vibrator source‡ Flavio Poletto, Corresponding Author Flavio Poletto Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), Italy E-mail: fpoletto@ogs.trieste.itSearch for more papers by this authorLorenzo Petronio, Lorenzo Petronio Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this authorBiancamaria Farina, Biancamaria Farina Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this authorAndrea Schleifer, Andrea Schleifer Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this author Flavio Poletto, Corresponding Author Flavio Poletto Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), Italy E-mail: fpoletto@ogs.trieste.itSearch for more papers by this authorLorenzo Petronio, Lorenzo Petronio Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this authorBiancamaria Farina, Biancamaria Farina Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this authorAndrea Schleifer, Andrea Schleifer Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, OGS, Borgo Grotta Gigante n. 42/c, 34010 Sgonico (TS), ItalySearch for more papers by this author First published: 10 December 2010 https://doi.org/10.1111/j.1365-2478.2010.00933.xCitations: 9 † This paper is based on extended abstract P278 presented at the 70th EAGE Conference & Exhibition Incorporating SPE EUROPEC 2008, 9–12 June 2008 in Rome, Italy. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat ABSTRACT We present the results of a seismic interferometry experiment in a shallow cased borehole. The experiment is an initial study for subsequent borehole seismic surveys in an instrumented well site, where we plan to test other surface/borehole seismic techniques. The purpose of this application is to improve the knowledge of the reflectivity sequence and to verify the potential of the seismic interferometry approach to retrieve high-frequency signals in the single well geometry, overcoming the loss and attenuation effects introduced by the overburden. We used a walkaway vertical seismic profile (VSP) geometry with a seismic vibrator to generate polarized vertical and horizontal components along a surface seismic line and an array of 3C geophones cemented outside the casing. The recorded traces are processed to obtain virtual sources in the borehole and to simulate single-well gathers with a variable source-receiver offset in the vertical array. We compare the results obtained by processing the field data with synthetic signals calculated by numerical simulation and analyse the signal bandwidth and amplitude versus offset to evaluate near-field effects in the virtual signals. The application provides direct and reflected signals with improved bandwidth after vibrator signal deconvolution. Clear reflections are detected in the virtual seismic sections in agreement with the geology and other surface and borehole seismic data recorded with conventional seismic exploration techniques. Citing Literature Volume59, Issue3May 2011Pages 464-476 RelatedInformation