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white papers

VertiShear's core technology was researched and developed over many years by Dr. Bob Hardage and his research team at The University of Texas' Bureau of Economic Geology in Austin, TX.

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Find below a sampling of different scientific papers and technology briefs that investigate the VertiShear Direct-S mode origins from the source, to the receivers, to the image processing techniques, and summary findings in some case studies.

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Currently, Dr. Hardage has been successful applying VertiShear's SV-P mode imaging to 11 different Oil & Gas Basins in North America.

2-page tech briefs
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P and SV Radiation Patterns Produced by Buried Explosives

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P and SV Radiation Patterns Produced by Vertical Vibrators

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Full-Mode Direct-S Illumination by Vertical and Horizontal Vibrators

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SV-P Imaging with P Sources

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Equivalence of SV-P and P-SV Images

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Examples of SV-P Images Made with P Sources

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Analyses of P-P Stacking Velocities Also Reveal SV-P Stacking Velocities

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SV-P Primary Reflections or P-P Interbed Multiples?

Full Whitepaper reports
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Generating Direct-S Modes with Simple, Low-Cost, Widely Available Seismic Sources

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SV-P: An Ignored Seismic Mode That Has Great Value for Interpreters

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S-S Imaging with Vertical-Force Sources

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Direct-S and Direct-P Modes Produced by Point Sources, Variable-Depth Shot Holes, Shot-Hole Arrays, and Vibrator Arrays

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Near-Field Effects on Direct-S Radiation Patterns

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Case History: SV-P Imaging of Wolfberry Unconventional Reservoirs

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Guidelines for Selecting Legacy P-Wave Data for SV-P Data Processing

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Processing Direct-S Data Produced by Vertical-Displacement Sources

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Extraction and Imaging of SV-P Reflections from Far-Offset VSP Data

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2-D Modeling of Direct-S & Direct-P

Part 1: Modeling Principles and Examples

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2-D Modeling of Direct-S & Direct-P

Part 2: P and S Radiation Patterns

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2-D Modeling of Direct-S & Direct-P

Part 3: Reflectivity Modeling Using Real Log Data

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