A decoupled fracture-and stress-induced PP-wave reflection coefficient approximation for azimuthal seismic inversion in stressed horizontal transversely isotropic …
X Pan, Z Zhao - Surveys in Geophysics, 2024 - Springer
Stress-induced seismic anisotropy is usually difficult to be separated or decoupled from
intrinsic or fracture-induced anisotropy in the subsurface. To distinguish the effects of …
intrinsic or fracture-induced anisotropy in the subsurface. To distinguish the effects of …
Model parameterization and PP-wave amplitude versus angle and azimuth (AVAZ) direct inversion for fracture quasi-weaknesses in weakly anisotropic elastic media
X Pan, G Zhang - Surveys in Geophysics, 2018 - Springer
Homogeneous isotropic or vertically transverse isotropic rocks containing a single set of
aligned, vertical fractures exhibits an effective long-wavelength horizontally transverse …
aligned, vertical fractures exhibits an effective long-wavelength horizontally transverse …
Azimuthal Fourier coefficient inversion for horizontal and vertical fracture characterization in weakly orthorhombic media
G Zhang, L Li, X Pan, H Li, J Liu, L Han - Geophysics, 2020 - library.seg.org
Horizontally and vertically aligned fractures (joints) permeated in an isotropic background
can give rise to a long-wavelength equivalent orthorhombic medium, which is common for …
can give rise to a long-wavelength equivalent orthorhombic medium, which is common for …
Seismic characterization of fractured reservoirs with elastic impedance difference versus angle and azimuth: A low-frequency poroelasticity perspective
ABSTRACT PP-wave azimuthal elastic impedance (EI) data inverted from azimuthal
prestack seismic reflection data can be theoretically and practically used for fluid-and …
prestack seismic reflection data can be theoretically and practically used for fluid-and …
Azimuthal amplitude variation with offset parameterization and inversion for fracture weaknesses in tilted transversely isotropic media
X Pan, L Li, S Zhou, G Zhang, J Liu - Geophysics, 2021 - library.seg.org
The characterization of fracture-induced tilted transverse isotropy (TTI) seems to be more
suitable to actual scenarios of geophysical exploration for fractured reservoirs. Fracture …
suitable to actual scenarios of geophysical exploration for fractured reservoirs. Fracture …
Fracture detection and fluid identification based on anisotropic Gassmann equation and linear-slip model
X Pan, G Zhang - Geophysics, 2019 - library.seg.org
Detection of fracture and fluid properties from subsurface azimuthal seismic data improves
our abilities to characterize the saturated porous reservoirs with aligned fractures. Motivated …
our abilities to characterize the saturated porous reservoirs with aligned fractures. Motivated …
Estimation of in situ stresses from PP-wave azimuthal seismic data in fracture-induced anisotropic media
Horizontally transverse isotropy (HTI) induced by vertical or subvertical aligned fractures is
common for unconventional fractured porous shale oil or gas reservoirs. Compared with the …
common for unconventional fractured porous shale oil or gas reservoirs. Compared with the …
Seismic characterization of naturally fractured reservoirs with monoclinic symmetry induced by horizontal and tilted fractures from amplitude variation with offset and …
Geological and geophysical data acquired from naturally fractured hydrocarbon reservoirs
usually exhibit the presence of multiple sets of fractures. Two different nonorthorhombic sets …
usually exhibit the presence of multiple sets of fractures. Two different nonorthorhombic sets …
Fluid discrimination based on inclusion-based method for tight sandstone reservoirs
P Wang, Y Cui, J Liu - Surveys in Geophysics, 2022 - Springer
Fluid discrimination is challenging for reservoir prediction, especially for tight sandstones
with special petrophysical properties. In this paper, we first review the effective medium …
with special petrophysical properties. In this paper, we first review the effective medium …
Estimating effective stress parameter and fracture parameters in shale-gas fractured reservoirs using azimuthal Fourier coefficients
L Li, G Zhang, X Pan, J Liu - Surveys in Geophysics, 2021 - Springer
Economic gas production from unconventional shale-gas reservoirs requires hydraulic
fracturing to reconnect and open existing fractures which are lower than the actual fracture …
fracturing to reconnect and open existing fractures which are lower than the actual fracture …