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Joint Inversion for Improved Sub-salt and Sub-basalt Imaging with Application to the More MarginNormal access

Authors: M. Jordan, J. Ebbing, M. Brönner, J. Kamm, Z. Du and P. Eliasson
Event name: 74th EAGE Conference and Exhibition incorporating EUROPEC 2012
Session: Sub-salt & Sub-basalt Imaging & Analysis
Publication date: 04 June 2012
DOI: 10.3997/2214-4609.20148154
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 953.58Kb )
Price: € 20

The simultaneous joint inversion of different geophysical datasets has proved to be a technique which results in better imaging in geologically complex areas like sub-salt and sub-basalt. Different approaches of joint inversion have been presented during recent years. We chose a structure based cross gradient approach (e.g. Gallardo and Meju, 2004) for the joint inversion of seismic and non-seismic methods, including gravity, magnetics and CSEM. The resulting models are consistent with all data sets, with each other and with structural and specific a priori information. We present our multi-parameter approach and examples of the application of the joint inversion method to synthetic data sets based on sections of the SEG salt and the Mre Margin.

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