New technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imaging

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dc.contributor.advisorLawton, Don Caleb
dc.contributor.advisorPedersen, Per Kent
dc.contributor.advisorEaton, David William S.
dc.contributor.authorWeir, Ronald McKenzie
dc.contributor.committeememberSchmitt, Douglas R.
dc.contributor.committeememberOetelaar, Gerald
dc.date2020-11
dc.date.accessioned2020-05-07T20:19:28Z
dc.date.available2020-05-07T20:19:28Z
dc.date.issued2020-05-04
dc.description.abstractSeismic data, comprising both passively and actively recorded data, have long been used for resource evaluation and geohazard assessments. Unconventional resource extraction, such as Alberta’s Duvernay play, requires a multifaceted approach to optimize reservoir development and to mitigate geohazards such as induced seismicity. Frequently, hydraulic fracture stimulation programs do not go as planned; fractures occur out of zone, depart from the predicted models, and, in some cases, induce felt seismic events (induced by hydraulic fracturing operations). From the Fox Creek, Alberta study area are well log data, multicomponent seismic reflection data, and microseismic data recorded from a permanent near-surface passive recording array. For this study, an industry partner provided two multicomponent seismic reflection surveys, as well as two co-located passive microseismic surveys. The Microseismic Industry Consortium (MIC) supplied microseismic data from the Tony Creek dual microseismic experiment (ToC2ME); an anonymous industry contributor contributed a second passive survey. Technologies developed in this thesis enable more accurate positioning of microseismic hypocenters by incorporating seismic reflection data. Signal-processing techniques used in seismic reflection processing are employed in this thesis to enhance the detection quality and quality of induced seismic events. Structural interpretation provides a framework of vital information to map and understand the relationship between geological structure and induced seismic events. Constraints obtained from full-waveform inversion provide detailed information about the properties of the Duvernay Formation itself, such as brittle and ductile facies. Accurate microseismic hypocenter determination in the context of seismic analysis identifies which structural elements and reservoir facies control the direction and size of induced fractures and which faults may be responsible for induced seismicity. Hypocenters are accurately located and plotted in depth and are associated with faults mapped from the reflected seismic. This analysis highlights what geological conditions, faults, lithology, and structure are dominant factors with respect to hydraulic fracture propagation and induced seismicity. The results of this research will aid in the design of hydraulic fracture completion programs and geohazard (induced seismic event) mitigation.en_US
dc.identifier.citationWeir, R. M. (2020). New technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imaging (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/37804
dc.identifier.urihttp://hdl.handle.net/1880/112001
dc.language.isoengen_US
dc.publisher.facultyScienceen_US
dc.publisher.institutionUniversity of Calgaryen
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.en_US
dc.subjectseismicityen_US
dc.subjectunconventional reservoiren_US
dc.subjectDuvernay Formatinonen_US
dc.subjectseismic inversionen_US
dc.subjectmicroseismicen_US
dc.subjectfocal-timeen_US
dc.subjectseismic interpretationen_US
dc.subjectpetrophysicsen_US
dc.subjectstructural mappingen_US
dc.subjecttranscurrent faultingen_US
dc.subjectreservoir characterizationen_US
dc.subject.classificationEducation--Sciencesen_US
dc.titleNew technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imagingen_US
dc.typedoctoral thesisen_US
thesis.degree.disciplineGeoscienceen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameDoctor of Philosophy (PhD)en_US
ucalgary.item.requestcopytrueen_US
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