Diffraction imaging of vertical fractures and karst with full-resolution 3D GPR, cassis quarry, France

M. Grasmueck, M. Coll, G. P. Eberli, K. Pomar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Vertical fractures with openings of less than a centimeter and irregular karst cause abundant diffractions in Ground Penetrating Radar (GPR) records. Conventional GPR data acquired with half wavelength trace spacing are uninterpretable as they are dominated by spatially undersampled scattered energy. To evaluate the potential of high-density 3D GPR diffraction imaging a 200 MHz survey with less than quarter wave length grid spacing (5 cm × 10 cm) was acquired at a fractured and karstified limestone quarry in southern France. After 3D migration processing diffraction apices line up in vertical fracture planes and cluster in locations of karstic dissolution features. Such high resolution 3D GPR imaging offers an unprecedented internal view of a complex fractured carbonate reservoir model analogue. As the nature of reflection seismic data is very similar to GPR, similar improvements in imaging of fractures and features at the resolution limit can also be expected from high density seismic diffraction imaging

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010
PublisherSociety of Petroleum Engineers
Pages2043-2047
Number of pages5
ISBN (Print)9781617386671
StatePublished - Jan 1 2010

Publication series

Name72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010
Volume3

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology
  • Geophysics
  • Geotechnical Engineering and Engineering Geology

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    Grasmueck, M., Coll, M., Eberli, G. P., & Pomar, K. (2010). Diffraction imaging of vertical fractures and karst with full-resolution 3D GPR, cassis quarry, France. In Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010 (pp. 2043-2047). (72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010; Vol. 3). Society of Petroleum Engineers.