Tomographic imaging of a carbonate core using different ultrasonic seismic sources at the laboratory scale: Piezoelectric versus point-like pulsed-laser

Autor: Stéphane Garambois, Clarisse Bordes, Jean Virieux, Julien Diaz, Chengyi Shen, Daniel Brito
Rok vydání: 2021
Předmět:
Zdroj: First International Meeting for Applied Geoscience & Energy Expanded Abstracts.
Popis: Carbonate rocks are of particular interest in exploration geophysics due to the prosperity of carbonate reservoirs in oil & gas industry. Such rocks are generally heterogeneous, anisotropic, porous and fractured, with complicated sedimentary compositions. Imaging their petrophysical properties can therefore be challenging with classical techniques. We propose here to proceed to the V p seismic tomographic imaging of a circular section of a carbonate core of diameter 10.7 cm based on the first arrival travel times of seismic waves. A point-like pulsed-laser and a piezoelectric transducer are alternatively used as seismic sources and a laser vibrometer records the travelling waves at the periphery of the carbonate core. V p images obtained with both sources are then analyzed and compared to an X-ray CT-scan tomography.
Databáze: OpenAIRE