EVALUATION OF ELASTIC IMPEDANCE ATTRIBUTES IN OFFSHORE HIGH ISLAND, GULF OF MEXICO

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dc.contributor.advisorStewart, Robert R.
dc.contributor.committeeMemberHilterman, Fred J.
dc.contributor.committeeMemberChesnokov, Evgeni M.
dc.creatorAwosemo, Oladotun
dc.date.accessioned2012-06-27T18:09:34Z
dc.date.accessioned2012-06-27T18:09:43Z
dc.date.available2012-06-27T18:09:34Z
dc.date.available2012-06-27T18:09:43Z
dc.date.createdMay 2012
dc.date.issued2012-05
dc.date.updated2012-06-27T18:09:43Z
dc.description.abstractIn certain areas, seismic AVO alone is not sufficient for interpretative purposes. This necessitates the use of other seismic attributes. The High Island Field, a Tertiary basin in the Gulf of Mexico, has values of acoustic impedance for shale and gas-saturated sands that are approximately equal. Conventional 3-D seismic data has had limited success in detecting hydrocarbons in this area. Also, synthetic seismograms are difficult if not impossible to tie to seismic data. To solve these problems, I employed the elastic impedance and extended elastic impedance attributes. Results from this research show significant amplitude increase with offset for a gas-saturated reservoir as compared to brine-saturated reservoir. The elastic impedance volume derived from the far-angle stack delineates the reservoir better than the elastic impedance volume from the near-angle stack. With respect to reservoir characterization, the five seismic attributes (Vp/Vs, bulk modulus, shear modulus, Lamé, and shear impedance) generated from the extended elastic impedance inversion helped to determine the lithology and predict the pore-fluid type of the reservoir. In conclusion, the use of additional seismic attributes (elastic impedance and extended elastic impedance) helps to achieve a better reservoir characterization especially in a Class 2 environment.
dc.description.departmentEarth and Atmospheric Sciences, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/298
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectElastic impedance
dc.subject.lcshGeophysics
dc.titleEVALUATION OF ELASTIC IMPEDANCE ATTRIBUTES IN OFFSHORE HIGH ISLAND, GULF OF MEXICO
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentEarth and Atmospheric Sciences, Department of
thesis.degree.disciplineGeophysics
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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