Integrated inversion of seismic and mCSEM data for the estimation of petro-physical parameters
- Authors
- Jeong, Soocheol; Byun, Joong moo; Seol, Soon Jee; Yi, Myeong-Jong; Park, Gyesoon
- Issue Date
- Oct-2016
- Publisher
- Society of Exploration Geophysicists
- Citation
- SEG Technical Program Expanded Abstracts, v.35, pp.912 - 916
- Indexed
- SCOPUS
- Journal Title
- SEG Technical Program Expanded Abstracts
- Volume
- 35
- Start Page
- 912
- End Page
- 916
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/153818
- DOI
- 10.1190/segam2016-13945384.1
- ISSN
- 1052-3812
- Abstract
- Petro-physical parameters, such as porosity and fluid (water, oil, and/or gas) saturation, which provide useful information for reservoir characterization, can be estimated by a rock physics model (RPM) using seismic velocity and electrical resistivity from geophysical surveys. In this study, we have developed an effective integrated inversion of seismic and marine controlled-source electromagnetic (mCSEM) data for the accurate estimation of petro-physical parameters. First, to improve the resolution of the resistivity images from mCSEM inversion, we introduce a seismic-constrained mCSEM inversion using a cross-gradient constraint between seismic velocity obtained by seismic full-waveform inversion (FWI) and resistivity. Next, to reliably estimate the petro-physical parameters from the seismic and mCSEM inversion results, we suggest an integrated estimation approach which applies the grid-search method to the RPM. In numerical experiments with SEAM phase I model containing a salt-dome and several oil reservoirs, we can reliably estimate porosity and fluid saturation of upper reservoirs.
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