Virtual surface seismic data from downhole passive arrays

G. R T Schuster*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Monitoring oilfield reservoirs by downhole seismic arrays typically consists of picking traveltimes of direct arrivals and lacating the hypocenter of the fracturing rock. The 3-component array typically has no more than a handful of geophones located in one or more wells. To broaden the use of this downhole recording array I propose that it can, in principle, also be used to record 3D VSP data from controlled surface sources. These VSP data with free surface multiples can than be interferomentrically transformed into virtual surface seismic reflection data, so that the subsurface reflection coverage is almost the same as a surface seismic experiment. To support this proposal, I present interferometric imaging results from 2D and 3D VSP data. Images from free surface related multiples show that the subsurface reflection illuminiation is almost as wide as that of a surface seismic experiment and is much larger than that from a conventional VSP image.

Original languageEnglish (US)
Title of host publicationWorkshop Passive Seismic - Passive Seismic
Subtitle of host publicationExploration and Monitoring Applications
PublisherEuropean Association of Geoscientists and Engineers, EAGE
StatePublished - 2006
Externally publishedYes
EventWorkshop Passive Seismic: Exploration and Monitoring Applications - Dubai, United Arab Emirates
Duration: Dec 10 2006Dec 13 2006

Other

OtherWorkshop Passive Seismic: Exploration and Monitoring Applications
CountryUnited Arab Emirates
CityDubai
Period12/10/0612/13/06

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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