TY - GEN
T1 - COMBINATION OF COMPRESSIONAL AND SHEAR ATTENUATIONS TO INVESTIGATE A CARBONATE RESERVOIR
AU - Bouchaala, F.
AU - Ali, M. Y.
AU - Matsushima, J.
N1 - Publisher Copyright:
Copyright© (2021) by the European Association of Geoscientists & Engineers (EAGE) All rights reserved.
PY - 2021
Y1 - 2021
N2 - Combining seismic attenuations of P and S waves may be an efficient tool for reservoir characterization. However, extraction of S waves is challenging especially in carbonate reservoirs known by their high heterogeneity and their complex texture. To overcome such challenge, we carefully processed three component VSP data before a proper extraction of S downgoing waves. The high scattering magnitudes is in agreement with high heterogeneous nature of carbonate rocks. The attenuation show a good sensitivity to the presence of the oil and helps for the distinction between reservoir and dense zones. Such distinction is possible because of the difference in attenuation mechanisms in both zones. Contrary to fully saturated sandstones, compressional to shear attenuation ratio in the fully saturated reservoir zone is higher than one. This is because physical models describing attenuation in partial and fully sandstones are too simple for carbonate rocks.
AB - Combining seismic attenuations of P and S waves may be an efficient tool for reservoir characterization. However, extraction of S waves is challenging especially in carbonate reservoirs known by their high heterogeneity and their complex texture. To overcome such challenge, we carefully processed three component VSP data before a proper extraction of S downgoing waves. The high scattering magnitudes is in agreement with high heterogeneous nature of carbonate rocks. The attenuation show a good sensitivity to the presence of the oil and helps for the distinction between reservoir and dense zones. Such distinction is possible because of the difference in attenuation mechanisms in both zones. Contrary to fully saturated sandstones, compressional to shear attenuation ratio in the fully saturated reservoir zone is higher than one. This is because physical models describing attenuation in partial and fully sandstones are too simple for carbonate rocks.
UR - http://www.scopus.com/inward/record.url?scp=85127779606&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85127779606
T3 - 82nd EAGE Conference and Exhibition 2021
SP - 4648
EP - 4652
BT - 82nd EAGE Conference and Exhibition 2021
T2 - 82nd EAGE Conference and Exhibition 2021
Y2 - 18 October 2021 through 21 October 2021
ER -