A parallel finite-element approach to CSEM forward modeling problems

Puzyrev, Volodymyr; Koldan, J.; De La Puente, J.; Cela, J.

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Authors

Puzyrev, Volodymyr

Koldan, J.

De La Puente, J.

Cela, J.

Date

2013

Type

Conference Paper

Metadata

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Citation

Puzyrev, V. and Koldan, J. and De La Puente, J. and Cela, J. 2013. A parallel finite-element approach to CSEM forward modeling problems, in Proceedings of the 75th European Association of Geoscientists and Engineers Conference and Exhibition incorporating SPE EUROPEC 2013: Changing Frontiers, Jun 10-13 2013, pp. 1379-1383. London, UK: European Association of Geoscientists & Engineers (EAGE). pp. 1379-1383. European Association of Geoscientists & Engineers (EAGE).

Source Title

75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers

ISBN

9781629937915

School

Department of Applied Geology

URI

http://hdl.handle.net/20.500.11937/32499

Collection

Curtin Research Publications

Abstract

The marine controlled-source electromagnetic method is a standard geophysical exploration tool in the offshore environment. We present a nodal finite-element method for 3D electromagnetic forward modeling with potentials. A numerical example illustrates the agreement between our method and the results of other authors. A realistic synthetic test case shows the possibilities of the finite-element method in handling completely unstructured tetrahedral meshes that allow an accurate representation of geological and bathymetric complexity, as well as anisotropy and large conductivity contrasts. Due to the usage of parallel Krylov subspace solvers and efficient preconditioners the code displays very good convergence and scalability. This method will be the basis for large scale 3D electromagnetic inversion.