TY  - CONF
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051958062&doi=10.4043%2f26627-ms&partnerID=40&md5=363c38da6d390aec1767249b8da08362
A1  - Alashloo, S.Y.M.
A1  - Ghosh, D.
A1  - Bashir, Y.
N1  - cited By 0; Conference of Offshore Technology Conference Asia 2016, OTCA 2016 ; Conference Date: 22 March 2016 Through 25 March 2016; Conference Code:138191
ID  - scholars7293
EP  - 333
N2  - Sedimentary layers in the Earth's subsurface result in seismic anisotropy which makes the wave velocity dependent to the propagation angle. This phenomenon causes complexities and errors in seismic imaging such as mispositioning of migrated events. One of the challenging issues in seismic imaging is the computation of seismic wave traveltime from source to receiver via the reflection point. A powerful method to compute traveltime is applying finite difference to solve the eikonal equation. In this study, we employ a fast marching eikonal solver in isotropic and VTI concept to obtain the seismic traveltime required for Kirchhoff depth migration algorithm. Rather than using elliptical eikonal equation which is commonly used in industry, we consider an anelliptic approximation since it is more realistic and accurate. Comparing the contours of isotropic and VTI traveltimes demonstrates a considerable lateral difference of wavefronts for both conditions. After Kirchhoff imaging, results show that the VTI imaging algorithm generates images with higher resolution than the isotropic one specifically in deeper parts where reflectors are more continuous and their patterns are more clear and traceable. © 2016, Offshore Technology Conference
SN  - 9781510830721
Y1  - 2016///
TI  - Application of VTI fast marching eikonal solver to improve seismic imaging
KW  - Differential equations; Geometrical optics; Offshore oil well production; Seismology; Wave propagation
KW  -  Eikonal equation; Higher resolution; Imaging algorithm; Kirchhoff depth migration; Propagation angle; Reflection points; Sedimentary layers; Seismic anisotropy
KW  -  Offshore technology
SP  - 328
PB  - Offshore Technology Conference
AV  - none
ER  -