Title:  Model reduction approaches for geophysical oil exploration

Speaker:  Mikhail Zaslavsky

Affiliation:  Schlumberger
 

Abstract: 
We develop accurate and fast Reduced Order Models (ROM) of large scale 3D 
electromagnetic (EM) problems for the following purposes:
a. multi-frequency forward problems
b. single frequency inverse problems

The constructed ROMs represent single or multivariate rational interpolations 
of the full scale models using global information in an optimal way. Depending 
on the objective our ROM, this allows to model effectively EM fields for 
multiple frequencies, time and conductivity distributions.

We demonstrate the efficiency of the developed approach on examples of forward 
and inverse problems of deep EM (cross-well and controlled-source EM).