Compagnie Generale De Geophysique

Marathon Oil Company

Pierre Lanfranchi

Didier Lecerf

Yves Lafet

Raphael Bornard

Jeffry G Hamman

Donald H Caldwell

Thierry Coléou

Erika Angerer

Thierry Crozat

Bernard Deschizeaux

Amélie Rodrigue Molle

Fabien Allo

Method of processing seismic data corresponding to acquisitions carried out in a medium exhibiting azimuthal anisotropy, characterized in that for two sets of data corresponding, for one and the same seismic variable and for one and the same ground zone, to at least two different source/azimuth receiver pair sectors, an average between the data which correspond to the azimuth considered and data which correspond, for the same variable and the same ground zone, to a perpendicular azimuth sector is determined for each of the azimuths considered, and in that an estimate of the part common to the two sets thus obtained of averaged data is determined.

Method for processing seismic data corresponding to acquisitions from a medium with azimuthal anisotropy

A method is provided for predicting a value of a designated rock or fluid property in a subterranean geologic volume. A first predicted value of the designated rock or fluid property is also assigned to a volume of a multi-dimensional, multi-scale model. A first predicted value of seismic response for the model volume is calculated from a response model using the first predicted value of the designated rock or fluid property, wherein the response model is responsive to changes in predicted values of the designated rock or fluid property. A synthetic trace is generated and iteratively compared to the corresponding trace obtained from one or more sets of actual seismic data to determine a difference while consistency is maintained between the types, scales and dimensions of values and data. The first predicted value of the designated rock or fluid property is adjusted in response to the difference to create a second predicted value of the designated rock or fluid property, wherein the second predicted value generally reduces the difference.

Method for predicting quantitative values of a rock or fluid property in a reservoir using seismic data

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Brentford, United Kingdom

Pierre Lanfranchi