Adaptive coupling strategy for simultaneous joint inversions that use petrophysical information as constraints

Björn Heincke, Marion Jegen, Max Moorkamp, Jin Chen, Richard W. Hobbs

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

17 Citationer (Scopus)

Abstrakt

Joint inversion strategies for geophysical data have become increasingly popular since they allow to combine complementary information from different data sets in an efficient way. Here, we present a non-linear joint inversion scheme, in which data from different methods are inverted separately and are joined through constrains accounting for parameter relationships. To avoid that the convergence behavior of the inversions is not profoundly disturbed by this coupling, the strengths of the constraints are re-adjusted at each iteration. In contrast to a joint inversion with a fixed parameter relationship, where data is inverted to one common model, this scheme requires no relative weighting of the data sets from different methods. Moreover, we observe that the adaption of the coupling strengths makes the convergence of the inversions much more robust. When we test our scheme with and without adaption on a synthetic 2-D model with seismic tomography, gravity and MT data, the final results with adaption were significantly closer to the true model. Finally, we observe that the adaptive scheme can to some extent handle models with structures for which the assumed parameter relationships are invalid.

OriginalsprogEngelsk
TitelSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
ForlagSociety of Exploration Geophysicists
Sider2805-2809
Antal sider5
ISBN (Trykt)9781617389801
DOI
StatusUdgivet - 2010
BegivenhedSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010 - Denver, USA
Varighed: 17 okt. 201022 okt. 2010

Publikationsserier

NavnSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010

Konference

KonferenceSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
Land/OmrådeUSA
ByDenver
Periode17/10/1022/10/10

Programområde

  • Programområde 3: Energiressourcer

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