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Detection of Open Fractures with Vertical Seismic Profiling

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dc.contributor.author Beydoun, W. B.
dc.contributor.author Cheng, C. H.
dc.contributor.author Toksoz, M. N.
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.date.accessioned 2012-11-27T19:35:45Z
dc.date.available 2012-11-27T19:35:45Z
dc.date.issued 1984-01-01
dc.identifier.uri http://hdl.handle.net/1721.1/75038
dc.description.abstract In Vertical Seismic Profiling surveys tube waves are generated by compressional waves impinging on subsurface fractures or permeable zones. The problem of generation of these waves by a non-normal incident P wave for an inclined borehole intersecting a tilted parallel wall fracture is formulated theoretically. The amplitude of tube waves depends on the permeability, the length of the fracture, and on the frequency. The relative effects of these parameters are studied individually. The problem is also formulated for a thin oblate ellipsoidal (penny-shaped) fracture. The results for the two fracture models are compared and contrasted. Field data from Tyngsboro, Massachusetts are shown for open fractures in granite. From tube wave amplitudes normalized to P wave amplitudes, calculated permeabilities are on the order of one hundred millidarcys. en_US
dc.description.sponsorship Massachusetts Institute of Technology. Full Waveform Acoustic Logging Consortium en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;1984-11
dc.title Detection of Open Fractures with Vertical Seismic Profiling en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Beydoun, W. B.
dc.contributor.mitauthor Cheng, C. H.
dc.contributor.mitauthor Toksoz, M. N.
dspace.orderedauthors Beydoun, W. B.; Cheng, C. H.; Toksoz, M. N. en_US


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