Integrated inversion of seismic and mCSEM data for the estimation of petro-physical parameters
- Title
- Integrated inversion of seismic and mCSEM data for the estimation of petro-physical parameters
- Author
- 변중무
- Keywords
- electromagnetic; inversion; velocity; electrical/resistivity
- Issue Date
- 2016-10
- Publisher
- Society of Exploration Geophysists
- Citation
- SEG Technical Program Expanded Abstracts 2016, Page. 912-916
- 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.
- URI
- https://library.seg.org/doi/10.1190/segam2016-13945384.1https://repository.hanyang.ac.kr/handle/20.500.11754/98806
- ISSN
- 1949-4645; 1052-3812
- DOI
- 10.1190/segam2016-13945384.1
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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