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Processing and Interpretation of Illinois Basin Seismic Reflection Data

Gigandet, Katherine M.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1401309913

Abstract Details

2014, Master of Science (MS), Wright State University, Earth and Environmental Sciences.
An anonymous oil company released 2D dynamite reflection data from the Illinois basin to be reprocessed and interpreted by Wright State University. The aim of the project is to exhaustively apply different seismic processing methods to the data to determine if any improvement in the imaging and interpretation may be accomplished. The data interpretation procedure convolved extracted wavelets from the final migrated section with reflectivity calculated from well log data provided. Once major formation tops were identified attribute analysis was applied to locate potential oil volumes of interest. The raw shot records from this impulse data are dominated by guided (refracted) waves. A large number of shot records show a stationary seismic source generating coherent noise at the same receiver locations throughout the survey. Rather than simply edit the affected traces I investigated methods to filter this source of noise to maintain the fold of coverage. This investigation found that several FK filters combined with iterative application of residual statics and velocity analysis was very effective in removing both the guided waves and the stationary-source waves on the raw shot records, resulting in improvement of the imaging. Radon filtering was attempted to reduce multiples and for future marine studies. Two well logs were successful in creating synthetic seismic traces within the area of the data allowing a comparison to the migrated section and identification of the bottom of New Albany, top of Maquoketa, top of Trenton and the top of the Knox unit. AVO volume analysis of intercept and gradient revealed a type 1 anomaly at the Trenton since it has high impedance. An anomaly of interest is seen below the Trenton of unknown origin with the same characteristics. It was concluded the seismic processing provided an interpreted stack despite the noise present and a meaningful AVO attribute analysis could be performed.
Doyle Watts, Ph.D. (Committee Chair)
Ernest Hauser, Ph.D. (Committee Member)
David Dominic, Ph.D. (Committee Member)
100 p.
Earth; Energy; Environmental Geology; Environmental Science; Geological; Geology; Geophysical; Geophysics
energy; earth; environmental geology; environmental science; geological; geology; geophysical; geophysics

Recommended Citations

Citations

  • Gigandet, K. M. (2014). Processing and Interpretation of Illinois Basin Seismic Reflection Data [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401309913

    APA Style (7th edition)

  • Gigandet, Katherine. Processing and Interpretation of Illinois Basin Seismic Reflection Data. 2014. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1401309913.

    MLA Style (8th edition)

  • Gigandet, Katherine. "Processing and Interpretation of Illinois Basin Seismic Reflection Data." Master's thesis, Wright State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401309913

    Chicago Manual of Style (17th edition)

wright1401309913
1,498
© 2014, some rights reserved.Creative Commons License Processing and Interpretation of Illinois Basin Seismic Reflection Data by Katherine M. Gigandet is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.