Journal : Acta Geophysica
Article : Numerical support of laboratory experiments: Attenuation and velocity estimations

Authors :
Saenger, E.
ETH Zurich Geological Institute, Zurich, Switzerland,,
Madonna, C.
ETH Zurich Geological Institute, Zurich, Switzerland,
Almqvist, B.
ETH Zurich Geological Institute, Zurich, Switzerland,
Abstract : We show that numerical support of laboratory experiments can significantly increase the understanding and simplify the interpretation of the obtained laboratory results. First we perform simulations of the Seismic Wave Attenuation Module to measure seismic attenuation of reservoir rocks. Our findings confirm the accuracy of this system. However, precision can be further improved by optimizing the sensor positions. Second, we model wave propagation for an ultrasonic pulse transmission experiment used to determine pressure- and temperature-dependent seismic velocities in the rock. Multiple waves are identified in our computer experiment, including bar waves. The metal jacket that houses the sample assembly needs to be taken into account for a proper estimation of the ultrasonic velocities. This influence is frequency-dependent.

Keywords : modelowanie numeryczne, prędkości ultradźwiękowe, tłumienie sejsmiczne, numerical modelling, ultrasonic velocities, seismic attenuation,
Publishing house : Instytut Geofizyki PAN
Publication date : 2014
Number : Vol. 62, no. 1
Page : 1 – 11

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Qute : Saenger, E. ,Madonna, C. ,Almqvist, B. ,Almqvist, B. , Numerical support of laboratory experiments: Attenuation and velocity estimations. Acta Geophysica Vol. 62, no. 1/2014