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S-wave Splitting Analysis: Covariance Matrix Method and Preliminary Application

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dc.contributor.author Li, Xu
dc.contributor.author Sze, Edmond
dc.contributor.author Burns, Daniel R.
dc.contributor.author Toksoz, M. Nafi
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.date.accessioned 2012-01-20T18:11:04Z
dc.date.available 2012-01-20T18:11:04Z
dc.date.issued 2004
dc.identifier.uri http://hdl.handle.net/1721.1/68617
dc.description.abstract From polarization analysis on a covariance matrix, a method of S-wave splitting analysis is developed, which processes 3-component recordings simultaneously, rather than just 2 horizontal components as done traditionally. Thus not only orientation, but also dip information of fractures can be resolved. The synthetic test results show that this method is stable even for noise levels as high as 100% (S/N=1). If time window sizes are larger than roughly twice the time delay between the fast and slow S waves, the results are always reasonable even with noise levels up to 50%.The method is applied to 12 microseismic events recorded from a producing reservoir. The preliminary results suggest that stress-aligned fractures strike in NE-SW direction in the reservoir. The dips of the fractures are primarily vertical. The time difference between the fast and slow shear waves is about several tens of milliseconds per kilometer. en_US
dc.description.sponsorship United States. Dept. of Energy (grant DE.FC03-015F22398) en_US
dc.description.sponsorship Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;2004-06
dc.title S-wave Splitting Analysis: Covariance Matrix Method and Preliminary Application en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Li, Xu
dc.contributor.mitauthor Sze, Edmond
dc.contributor.mitauthor Burns, Daniel R.
dc.contributor.mitauthor Toksoz, M. Nafi
dspace.orderedauthors Li, Xu; Sze, Edmond; Burns, Daniel R.; Toksoz, M. Nafi en_US


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