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Bayesian linearized AVO inversion

A new linearized AVO inversion technique is developed in a Bayesian framework. The objective is to obtain posterior distributions for P‐wave velocity, S‐wave velocity, and density. Distributions for… Expand

Bayesian lithology/fluid prediction and simulation on the basis of a Markov-chain prior model

- A. Larsen, M. Ulvmoen, H. Omre, A. Buland
- Geology
- 5 September 2006

A technique for lithology/fluid (LF) prediction and simulation from prestack seismic data is developed in a Bayesian framework. The objective is to determine the LF classes along 1D profiles through… Expand

Rapid spatially coupled AVO inversion in the Fourier domain

- A. Buland, O. Kolbjørnsen, H. Omre
- Mathematics
- 29 May 2003

Spatial coupling of the model parameters in an inversion problem provides lateral consistency and robust solutions. We have defined the inversion problem in a Bayesian framework, where the solution… Expand

Joint AVO inversion, wavelet estimation and noise-level estimation using a spatially coupled hierarchical Bayesian model

The main objective of the AVO inversion is to obtain posterior distributions for P-wave velocity, S-wave velocity and density from specified prior distributions, seismic data and well-log data. The… Expand

Bayesian lithology and fluid prediction from seismic prestack data

- A. Buland, O. Kolbjørnsen, R. Hauge, Ø. Skjæveland, K. Duffaut
- Geology
- 1 May 2008

A fast Bayesian inversion method for 3D lithology and fluid prediction from prestack seismic data, and a corresponding feasibility analysis were developed and tested on a real data set. The objective… Expand

Improved resolution in Bayesian lithology/fluid inversion from prestack seismic data and well observations: Part 2 — Real case study

- M. Ulvmoen, H. Omre, A. Buland
- Geology
- 1 April 2010

We have performed lithology/fluid inversion based on prestack seismic data and well observations from a gas reservoir offshore Norway. The prior profile Markov random field model captures horizontal… Expand

Bayesian wavelet estimation from seismic and well data

A Bayesian method for wavelet estimation from seismic and well data is developed. The method works both on stacked data and on prestack data in form of angle gathers. The seismic forward model is… Expand

Rapid Spatially Coupled AVO Inversion

- A. Buland, O. Kolbjørnsen, H. Omre
- Geology
- 2003

The Bayesian methodology yields a natural framework for many geophysical inverse problem, see e.g. (Tarantola and Valette, 1982; Tarantola, 1987; Duijndam, 1988a; Duijndam, 1988b). The solution of a… Expand

Bayesian time-lapse inversion

- A. Buland, Y. E. Ouair
- Geology
- 24 May 2006

A new, fast inversion approach for time-lapse seismic data is developed where the uncertainty of the inversion results is an integral part of the solution. The inversion method estimates changes in… Expand

Amplitude analysis with an optimal model-based linear AVO approximation: Part II — Field data example

AVO analysis can be conducted by estimating amplitude variation with offset (AVO) attributes from seismic prestack data and by characterizing the measured amplitude responses by the position of their… Expand

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