Elastic Reverse-Time Migration Imaging Using Perforation Shots and Vertical Receiver Arrays

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dc.contributor.advisorStewart, Robert R.
dc.contributor.committeeMemberZheng, Yingcai
dc.contributor.committeeMemberPeterson, Steven
dc.creatorBrooks, Nicholas Andrew 1986-
dc.creator.orcid0000-0002-0746-2967
dc.date.accessioned2019-11-17T21:19:15Z
dc.date.available2019-11-17T21:19:15Z
dc.date.createdDecember 2016
dc.date.issued2016-12
dc.date.submittedDecember 2016
dc.date.updated2019-11-17T21:19:15Z
dc.description.abstractRecent innovations in hydraulic-fracture stimulation have increased the prevalence of borehole seismic monitoring of microseisms. This research investigates elastic-wave propagation as it pertains to seismic sources within the local borehole vicinity and the utility of elastic-wave finite-difference solutions as a means to model elastic-wave propagation and as a kernel component in a reverse-time migration imaging condition. A 2-D fourth order spatially accurate finite-difference solution to the elastic-wave equation is implemented to model wave propagation in elastic media resulting from a variety of focal-mechanism types and orientations. This algorithm’s simulated wavefield is compared to that of a preexisting finite-difference solution implementation in seismic Unix’s suea2df and an approximate analytic solution to the elastic-wave equation. A modified elastic reverse-time migration imaging condition is presented and tested on synthetic data propagated through a single-diffractor, two horizontal interfaces, and a subset of the Marmousi 2 model. Each test case simulates common acquisition geometries encountered in a perforation shot monitoring in an unconventional well and is demonstrated to be a potentially feasible imaging technique for near borehole subsurface structure. Imaging quality is then demonstrated to be dependent on acquisition geometry as described by the Nyquist sampling theorem. The reverse-time migration algorithm is then invoked on a dataset acquired from a vertically oriented receiver array by Hess Oil Co. from perforation shots in the En-Person 3H well.
dc.description.departmentEarth and Atmospheric Sciences, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10657/5435
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.subjectGeophysics
dc.subjectReverse time migration (RTM)
dc.subjectPerforation shot
dc.subjectImaging
dc.subjectElastic wave
dc.subjectElastic
dc.subjectFinite difference
dc.subjectStaggered grid
dc.subjectStress velocity
dc.subjectUnconventional wells
dc.subjectLateral well
dc.subjectBakken
dc.subjectVertical seismic profile (VSP)
dc.subjectSeismic
dc.subjectSeismology
dc.titleElastic Reverse-Time Migration Imaging Using Perforation Shots and Vertical Receiver Arrays
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentEarth and Atmospheric Sciences
thesis.degree.disciplineGeophysics
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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