3D ray tracing using a modified shortest-path method

C Bai, S Greenhalgh, B Zhou - Geophysics, 2007 - library.seg.org
We present an accurate 3D ray-tracing algorithm based on a modified (more flexible and
economical) shortest-path method (SPM). Unlike the regular SPM in the 3D case, which …

Microseismic joint location and anisotropic velocity inversion for hydraulic fracturing in a tight Bakken reservoir

J Li, C Li, SA Morton, T Dohmen, K Katahara… - Geophysics, 2014 - library.seg.org
To improve the accuracy of microseismic event locations, we developed a new inversion
method with double-difference constraints for determining the hypocenters and the …

Seismic complex ray tracing in 2D/3D viscoelastic anisotropic media by a modified shortest-path method

XW Li, B Zhou, CY Bai, JL Wu - Geophysics, 2020 - library.seg.org
In a viscoelastic anisotropic medium, velocity anisotropy and wave energy attenuation occur
and are often observed in seismic data applications. Numerical investigation of seismic …

Nonlinear traveltime inversion scheme for crosshole seismic tomography in tilted transversely isotropic media

B Zhou, S Greenhalgh, A Green - Geophysics, 2008 - library.seg.org
Crosshole seismic tomography often is applied to image the velocity structure of an interwell
medium. If the rocks are anisotropic, the tomographic technique must be adapted to the …

Analytic formula for the group velocity and its derivatives with respect to elastic moduli for a general anisotropic medium

D Wang, CY Bai, XW Li, J Hu - Geophysics, 2023 - library.seg.org
Studying the anisotropy of seismic wave velocity can provide a theoretical basis for
understanding the characteristics of seismic wave propagation in anisotropic media, such as …

Eigenrays in 3D heterogeneous anisotropic media, Part I: Kinematics

Z Koren, I Ravve - Geophysical Prospecting, 2021 - earthdoc.org
We present a new ray bending approach, referred to as the Eigenray method, for solving two‐
point boundary‐value kinematic and dynamic ray tracing problems in 3D smooth …

Traveltime calculations for qP, qSV, and qSH waves in two‐dimensional tilted transversely isotropic media

G Huang, S Luo, J Deng… - Journal of Geophysical …, 2020 - Wiley Online Library
This paper presents a fast swee** method (FSM) to calculate the first‐arrival traveltimes of
the qP, qSV, and qSH waves in two‐dimensional (2D) transversely isotropic media, whose …

Task-parallel implementation of 3D shortest path raytracing for geophysical applications

B Giroux, B Larouche - Computers & geosciences, 2013 - Elsevier
This paper discusses two variants of the shortest path method and their parallel
implementation on a shared-memory system. One variant is designed to perform raytracing …

Hybrid fast swee** methods for anisotropic eikonal equation in two-dimensional tilted transversely isotropic media

G Huang, S Luo - Journal of Scientific Computing, 2020 - Springer
We present hybrid fast swee** methods for computing first-arrival traveltime of the qP, qSV
and qSH waves in two-dimensional tilted transversely isotropic media, based on solving the …

Calculation of slowness vectors from ray directions for qP-, qSV-, and qSH-waves in tilted transversely isotropic media

L Zhang, B Zhou - Geophysics, 2018 - pubs.geoscienceworld.org
Kinematic ray tracing is an effective way to simulate the seismic wave propagation in
isotropic and anisotropic media. It is essential to know the ray velocity when tracing seismic …