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 …

Anisotropy is ubiquitous in the Earth's crust, which causes the elastic characteristics of
seismic waves to change with direction. The study of seismic wave anisotropy is of great …

在讨论地震波传播理论时, 大部分情况下是把地震波看作弹性波. 事实上, 地下介质是非完全弹性
介质, 这使得传统的均匀, 完全弹性介质理论受到了严重挑战. 地震波在裂隙岩石中传播受裂隙 …

Layered rocks (LR) are composed of intact rock matrix (IRM) and various oriented rough
weakness planes (eg, fractures, bedding planes, and foliations). New microcracks can also …

ABSTRACT PP-wave azimuthal elastic impedance (EI) data inverted from azimuthal
prestack seismic reflection data can be theoretically and practically used for fluid-and …

Seismic anisotropy is an important attribute for fracture detection and characterization. If
fracture size is comparable to the wavelength or fluid diffusion length, the P wave anisotropy …

The anisotropic fracture mechanical behavior of layered rocks is an important issue in
hydraulic fracturing and other subsurface engineering applications. However, current …

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 …

At present, approaches based on the AVAaz (P-wave amplitude versus the incident angle
and azimuth) inversion are highly pivotal for estimating fracture parameters (namely fracture …

Dense small-sized and high-angle fractures are commonly developed in unconventional
reservoirs, such as tight sandstone and shale reservoirs. These fractures play a positive role …