In this paper we discuss the subsurface parameters that can be extracted from seismic by AV O inversion over a target interval. It is argued that, while people are very much used to invert for impedances (P and S), or combinations of impedances (e.g. Extended Elastic Impedance), the conventional AVO equations can be formulated directly in terms of bulk modulus and shear modulus, which are much more closely related to hydro-carbon saturation and porosity than impedances or velocities.

It is also demonstrated that linear AVO techniques, like the ones based on primary reflection coefficients, have their limitations, due to the fact that there is much more internal multiple scattering and mode conversion than one would usually expect. These problems can be solved by adopting a wave equation based inversion approach, where the non-linear character of the relationship between the data and the property representation to invert for, is fully honoured.

Examples are given that demonstrate the increased sensitivity of the bulk modulus to hydro-carbon saturation, over acoustic impedance.


Article metrics loading...

Loading full text...

Full text loading...


  1. Whitcombe, D.N., Conolly, P.A. and Reagan, R.L.
    [2002] Extended elastic impedance for fluid and lithology prediction. Geophysics, 67, 63–67
    [Google Scholar]
  2. Aki, K. and Richards, P.G.
    [2002] Quantitative Seismology, 2nd Edition. University Science Books.
    [Google Scholar]
  3. Gisolf, A. and van den Berg, P.M.
    [2010] Target-oriented non-linear inversion of seismic data. Proceedings of the 72nd EAGE Annual ConferenceBarcelona, P308, 2010.
    [Google Scholar]
  4. Gisolf, A. and Verschuur, D.J.
    [2010] The Principles of Quantitative Acoustical Imaging. EAGE Publications.
    [Google Scholar]
  5. Beller, M., Doulgeris, P., Gisolf, A., Haffinger, P.R, Huisin’t Veld, R., Wever, A.K.T.
    [2015] Resolving Carboniferous stacked channel sequences with a non-linear AVO technology. EAGE Madrid 2015.
    [Google Scholar]
  6. Haffinger, P.R, von Wussow, P., Doulgeris, P., Henke, C., Gisolf, A.
    [2015] Reservoir delineation by applying a non-linear AVO technique. EAGE Madrid 2015.
    [Google Scholar]

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error