TY - JOUR
T1 - Target-Oriented Inversion of Time-Lapse Seismic Waveform Data
AU - Huang , Xingguo
AU - Jakobsen , Morten
AU - Solberg Eikrem , Kjersti
AU - Nævdal , Geir
JO - Communications in Computational Physics
VL - 1
SP - 249
EP - 275
PY - 2020
DA - 2020/05
SN - 28
DO - http://doi.org/10.4208/cicp.OA-2018-0143
UR - https://global-sci.org/intro/article_detail/cicp/16836.html
KW - Waveform inversion, time-lapse seismic, seismic inverse scattering, target-oriented inversion, Gaussian beam based Green's function.
AB - <p style="text-align: justify;">Full waveform inversion of time-lapse seismic data can be used as a means
of estimating the reservoir changes due to the production. Since the repeated computations for the monitor surveys lead to a large computational cost, time-lapse full waveform inversion is still considered to be a challenging task. To address this problem,
we present an efficient target-oriented inversion scheme for time-lapse seismic data
using an integral equation formulation with Gaussian beam based Green&#39;s function
approach. The proposed time-lapse approach allows one to perform a local inversion
within a small region of interest (e.g. a reservoir under production) for the monitor survey. We have verified that the T-matrix approach is indeed naturally target-oriented,
which was mentioned by Jakobsen and Ursin [24] and allows one to reduce the computational cost of time-lapse inversion by focusing the inversion on the target-area only.
This method is based on a new version of the distorted Born iterative T-matrix inverse
scattering method. The Gaussian beam and T-matrix are used in this approach to perform the wavefield computation for the time-lapse inversion in the baseline model
from the survey surface to the target region. We have provided target-oriented inversion results of the synthetic time-lapse waveform data, which shows that the proposed
scheme reduces the computational cost significantly.</p>