Full-waveform inversion of cross-hole GPR data collected in a strongly heterogeneous chalk reservoir analogue with sharp permittivity and conductivity contrasts

TY - GEN

T1 - Full-waveform inversion of cross-hole GPR data collected in a strongly heterogeneous chalk reservoir analogue with sharp permittivity and conductivity contrasts

AU - Keskinen, Johanna

AU - Zibar, Majken Caroline Looms

AU - Moreau, Julien

AU - Nielsen, Lars

AU - Stemmerik, Lars

AU - Klotzsche, Anja

AU - van der Kruk, Jan

AU - Holliger, Klaus

PY - 2014

Y1 - 2014

N2 - Chalk sediments form an important reservoir for groundwater onshore and for hydrocarbons in the Danish sector of the North Sea. Cross-hole Ground-penetrating radar (GPR) tomography is an efficient method to investigate subtle porosity variations in the chalk. Traditional ray-based inversion techniques provide models that are overly smooth and have relatively low resolution. We present preliminary results from full-waveform inversion of data collected in strongly heterogeneous chalk. The resolution of the tomograms has improved significantly compared to models obtained from travel-time tomography. The new models also reflect the variability seen in 1D drill core analysis. The results indicate that fullwaveform inversion is a well-suited inversion technique for high-resolution time-lapse-based flow characterization.

AB - Chalk sediments form an important reservoir for groundwater onshore and for hydrocarbons in the Danish sector of the North Sea. Cross-hole Ground-penetrating radar (GPR) tomography is an efficient method to investigate subtle porosity variations in the chalk. Traditional ray-based inversion techniques provide models that are overly smooth and have relatively low resolution. We present preliminary results from full-waveform inversion of data collected in strongly heterogeneous chalk. The resolution of the tomograms has improved significantly compared to models obtained from travel-time tomography. The new models also reflect the variability seen in 1D drill core analysis. The results indicate that fullwaveform inversion is a well-suited inversion technique for high-resolution time-lapse-based flow characterization.

U2 - 10.1190/segam2014-1199.1

DO - 10.1190/segam2014-1199.1

M3 - Article in proceedings

T3 - S E G Technical Program Expanded Abstracts (Online)

SP - 960

EP - 965

BT - SEG Technical Program Expanded Abstracts

PB - Society of Exploration Geophysicists (SEG)

ER -