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Oklahoma History Center

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    • 25 Feb 2019
    • 11:30 AM - 1:00 PM
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    Choosing the Best Attributes for Seismic Facies Discrimination

    Jie Qi

    The University of Oklahoma



    Abstract

    Interpreters face two main challenges in seismic facies analysis. The first challenge is to define, or “label”, the facies of interest. The second challenge is to select a suite of attributes that can differentiate a target facies from the background reflectivity. Accurately defining the 3D extent of a given seismic facies takes an understanding of geologic processes and the limits of seismic acquisition, processing, and imaging. The key objective in this presentation is to determine which seismic attributes can best differentiate one class of chaotic seismic facies from another using modern machine learning technology. Although our earlier approach based on 1D histograms provided a list of candidate attributes, it did not provide the optimum number or combination of attributes. To address this limitation, we conduct an exhaustive search whereby we represent the target and background training facies by high dimensional Gaussian Mixture Models for each potential attribute combination.

    We begin this presentation with a summary of those attributes we feel are candidates able to differentiate chaotic mass-transport deposits and salt diapirs from the more conformal, coherent background reflectors. The application begins with drawing polygons around the target and background facies to provide the labeled data. We then show how Gaussian Mixture Models can represent a disjoint histogram in high dimensional space.  After selecting the optimum number and combination of attributes, we perform an unsupervised generative topographic mapping classification. Each labeled facies provide a probability density function on the manifold that can be compared to the probability density function of each voxel, providing the likelihood that a given voxel is a member of each of the facies. Our first example is that of mapping chaotic seismic facies associated with the development of salt diapirs and minibasins. We repeat this workflow for our second example of karst collapse underlying a shale resource play from north Texas.

    Biography

    Jie Qi is a Post-doc research associate at the University of Oklahoma, working on machine learning-based seismic fault interpretation and facies analysis. In addition to technology development, Jie provides technical support and mentors students in the Attribute Assisted Seismic Processing & Interpretation (AASPI) consortium. Jie has created fault image enhancement and skeletonization workflows to accelerate faults interpretation as well as multiattribute classification workflows to establish 3D seismic facies models. More recently he has developed multiazimuth and multioffset coherence algorithms. Jie earned a M.S. from the University of Houston, and a Ph.D. from the University of Oklahoma.


    • 26 Mar 2019
    • 11:30 AM - 7:00 PM
    Registration is closed

    To Be Announced

    • 15 Apr 2019
    • 11:30 AM - 1:00 PM
    Registration is closed

    To Be Announced

    • 20 May 2019
    • 5:30 PM - 9:00 PM
    Registration is closed

    To Be Announced

Past events

28 Jan 2019 January Luncheon: Dr. Jyoti Behura
17 Dec 2018 GSOC Holiday Party
26 Nov 2018 November Technical Luncheon
22 Oct 2018 October Luncheon
18 Sep 2018 2018 GSOC Annual Golf Tournament
17 Sep 2018 SEG Honorary Lecture - September Luncheon
21 May 2018 2018 Annual Spouse and Awards Night
16 Apr 2018 April Technical Luncheon
20 Mar 2018 2018 Continuing Education and Shrimp Boil
26 Feb 2018 February Technical Luncheon
22 Jan 2018 January Technical Luncheon
18 Dec 2017 2017 Holiday Party
06 Nov 2017 SEG Honorary Lecturer Mirko van der Baan
24 Oct 2017 2017 GSOC Annual Golf Tournament
23 Oct 2017 October luncheon
18 Sep 2017 September luncheon: Dr. Mark Mack Sigma3
22 May 2017 2017 Annual Spouse and Awards Night
24 Apr 2017 April Seminar and Luncheon
21 Mar 2017 2017 Continuing Education and Shrimp Boil
27 Feb 2017 February Seminar and Luncheon
23 Jan 2017 January Seminar and Luncheon
15 Dec 2016 2016 Holiday Party
24 Oct 2016 October Seminar and Luncheon
13 Sep 2016 2016 GSOC Annual Golf Tournament
12 Sep 2016 September Seminar and Luncheon
23 May 2016 Annual Spouse and Awards Night
09 May 2016 Continuing Education and Shrimp Boil
11 Apr 2016 SEG Distinguished Lecturer Joe Dellinger
28 Mar 2016 March Seminar and Luncheon
22 Feb 2016 February Seminar: PSDM Case Study, Dr. Morgan Brown
25 Jan 2016 GSOC Seminar and Lunch Featuring Bob Hardage
14 Dec 2015 Holiday Party
16 Nov 2015 GSOC November Luncheon. Clint Barefoot, Eagleford Case Study
26 Oct 2015 GSOC October Luncheon. Paul Constance, Multicomponent Surface Seismic and VSP for Reservoir Characterization of the Mississippian
15 Sep 2015 GSOC Annual Golf Tournament
14 Sep 2015 GSOC September Luncheon. SEG Honorary Lecturer, Dan Whitmore
19 May 2015 Spouse and Awards Night
28 Apr 2015 Continuing Education and Shrimp Boil
16 Apr 2015 SEG Distinguished Lecturer Dr. Jean Virieux
23 Mar 2015 March Technical Seminar and Luncheon
01 Jun 1990 1990 Annual Meeting

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