High-resolution reservoir characterization by 2-D model-driven seismic Bayesian inversion: An example from a Tertiary deltaic clinoform system in the North Sea

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Abstract

In order to retrieve a high-resolution reservoir model from seismic and well data, an approach was developed based on an a priori layered model from well data, specifically the acoustic impedances derived from the sonic and density logs. The procedure consists of using a forward model of the well data as a priori information that is then iteratively matched with the seismic data using a Bayesian inversion process. The inversion is then extended to 2D, whereby the extrapolation is guided by a simple geometric envelope described with a small number of parameters. It is tested on a seismic data set containing a deltaic clinoform in the North Sea, whereby the clinoform geometry is parameterized by a sigmoid and used as prior information. In the subsequent optimization the clinoform geometry is further refined with a limited number of local knots to improve the match with the seismic data. This low-parameterization inversion approach thus uses geological shapes and well constraints to obtain a subsurface model than can have a substantially higher resolution than the seismic wavelength.
Original languageEnglish
Title of host publication78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Editors s.n.
Place of PublicationTulsa, OK, USA
PublisherSociety of Exploration Geophysicists
Pages1880-1884
Number of pages5
ISBN (Print)9781605607856
DOIs
Publication statusPublished - 2008
EventSEG International Exposition and 78th Annnual Meeting, Las Vegas, Nevada, USA - Tulsa, OK, USA
Duration: 9 Nov 200814 Nov 2008

Publication series

Name
PublisherSEG

Conference

ConferenceSEG International Exposition and 78th Annnual Meeting, Las Vegas, Nevada, USA
Period9/11/0814/11/08

Keywords

  • 2D
  • Algorithm
  • Inversion
  • Reservoir characterization
  • Resolution

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    Tetyukhina, D., Luthi, S. M., van Vliet, L. J., & Wapenaar, K. (2008). High-resolution reservoir characterization by 2-D model-driven seismic Bayesian inversion: An example from a Tertiary deltaic clinoform system in the North Sea. In s.n. (Ed.), 78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 (pp. 1880-1884). Society of Exploration Geophysicists. https://doi.org/10.1190/1.3059266