Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
Fracture-direction estimation by QVOA analysis : Validation by physical modeling. / Chichinina, Tatiana; Kazatchenko, Elena; Sabinin, Vladimir; Popov, Dmitry; Polovkov, Viacheslav; Wei, Jianxin; Ding, Pinbo.
SEG International Exposition and Annual Meeting 2019. Society of Exploration Geophysicists, 2019. стр. 378-383 (SEG Technical Program Expanded Abstracts).Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
}
TY - GEN
T1 - Fracture-direction estimation by QVOA analysis
T2 - Society of Exploration Geophysicists International Exposition and 89th Annual Meeting, SEG 2019
AU - Chichinina, Tatiana
AU - Kazatchenko, Elena
AU - Sabinin, Vladimir
AU - Popov, Dmitry
AU - Polovkov, Viacheslav
AU - Wei, Jianxin
AU - Ding, Pinbo
N1 - Publisher Copyright: © 2019 SEG
PY - 2019/8/10
Y1 - 2019/8/10
N2 - We study anisotropy of P-wave attenuation that is Q-anisotropy, and develop an approach named QVOA (seismic quality factor Q versus offset and azimuth) to estimate the fracture-strike direction identified by the azimuth ϕ0. We derive QVOA formula Q-1(θ, ϕ) for the P-wave attenuation Q-1 as a function of the polar angle θ and azimuth ϕ, and test Q-1(θ,ϕ) using physical modeling data. Our testing consists of fitting a function Q-1(θ, ϕ) to the data from the physical modeling, using the method of least squares. The QVOA-formula gives the most accurate estimation of the direction ϕ0 of the HTI-symmetry axis in comparison with other approximation formula. The values of velocity and attenuation are, in some sense, reciprocals of each other: the attenuation is greatest in the direction of the HTI-symmetry axis ϕ0=0°, where the velocity is least, and vice versa at the orthogonal direction ϕ=90°, which is the fracture-strike direction. That is, the azimuth of the minimal attenuation ϕ=90° coincides with the direction of the fracture strike (ϕ=90°), where the velocity is maximal.
AB - We study anisotropy of P-wave attenuation that is Q-anisotropy, and develop an approach named QVOA (seismic quality factor Q versus offset and azimuth) to estimate the fracture-strike direction identified by the azimuth ϕ0. We derive QVOA formula Q-1(θ, ϕ) for the P-wave attenuation Q-1 as a function of the polar angle θ and azimuth ϕ, and test Q-1(θ,ϕ) using physical modeling data. Our testing consists of fitting a function Q-1(θ, ϕ) to the data from the physical modeling, using the method of least squares. The QVOA-formula gives the most accurate estimation of the direction ϕ0 of the HTI-symmetry axis in comparison with other approximation formula. The values of velocity and attenuation are, in some sense, reciprocals of each other: the attenuation is greatest in the direction of the HTI-symmetry axis ϕ0=0°, where the velocity is least, and vice versa at the orthogonal direction ϕ=90°, which is the fracture-strike direction. That is, the azimuth of the minimal attenuation ϕ=90° coincides with the direction of the fracture strike (ϕ=90°), where the velocity is maximal.
KW - anisotropy, azimuth
KW - azimuth
KW - attenuation
KW - fractures
UR - http://www.scopus.com/inward/record.url?scp=85121856192&partnerID=8YFLogxK
U2 - 10.1190/segam2019-3214462.1
DO - 10.1190/segam2019-3214462.1
M3 - Conference contribution
AN - SCOPUS:85121856192
T3 - SEG Technical Program Expanded Abstracts
SP - 378
EP - 383
BT - SEG International Exposition and Annual Meeting 2019
PB - Society of Exploration Geophysicists
Y2 - 15 September 2019 through 20 September 2019
ER -
ID: 52355400