Depth imaging with reflection statics derived from model-based moveout

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dc.contributor.advisorInnanen, Kristopher A.
dc.contributor.authorEllison, Dennis Kent
dc.contributor.committeememberLines, Laurence R.
dc.contributor.committeememberKarchewski, Brandon
dc.date2019-06
dc.date.accessioned2018-10-16T15:16:55Z
dc.date.available2018-10-16T15:16:55Z
dc.date.issued2018-10-15
dc.description.abstractIn land reflection seismic data analysis, reflection static corrections are analytical solutions for resolving timing differences between measured and theoretical arrival times of seismic waves. These static corrections can make a substantial difference in the absence of detailed near-surface information and are dependent on assumptions associated with the normal moveout (NMO) theory. NMO is an analytical solution based on the assumption that the moveout in seismic data can be approximated by an hyperbola. This assumption is valid when the moveout pattern is near-hyperbolic but fails when it is not. Scenarios where moveout is not hyperbolic, include situations: when the topography is not flat; when strong lateral velocity variations are present; when there are strong variations in velocity magnitudes and seismic weathering thickness across the data. A moveout velocity field can be created using ray-traced travel-times from the velocity model instead of NMO. These travel-times are calculated from each source and receiver and can be applied to the respective traces at the corresponding offset. This model-based moveout (MMO) correction is coupled to depth migration and allows for asymmetric non-hyperbolic moveout commonly associated with strong lateral velocity variations in the subsurface. These MMO derived static corrections can render sharper depth migrated images and lead to stronger geologic representation of the depth imaging velocity model.en_US
dc.identifier.citationEllison, D. K. (2018). Depth imaging with reflection statics derived from model-based moveout (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/33208en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/33208
dc.identifier.urihttp://hdl.handle.net/1880/108886
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.facultyScience
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectGeophysics
dc.subjectDepth Imaging
dc.subjectMoveout
dc.subjectSeismic Processing
dc.subject.classificationEducation--Sciencesen_US
dc.titleDepth imaging with reflection statics derived from model-based moveout
dc.typemaster thesis
thesis.degree.disciplineGeoscience
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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