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Estimation of Imageable Dip Range of Target Structures in Interferometric Salt Flank Imaging with Limited IlluminationNormal access

Authors: A. Loureiro, J. van der Neut, D. Alves, J. Carvalho, A. Afilhado, D. Draganov, L. Matias and T. Martins
Event name: 74th EAGE Conference and Exhibition incorporating EUROPEC 2012
Session: Seismic Interferometry
Publication date: 04 June 2012
DOI: 10.3997/2214-4609.20148750
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 365.48Kb )
Price: € 20

Summary:
When applying seismic interferometry to image sub-vertical salt flanks or structures with large dips from vertical or deviated wells, we are often confronted with poor target illumination. Strong directional-illumination footprints caused by non-ideal placement of sources at the surface degrade the interferometric image quality and may prevent the retrieval of particular dips in the image. The effect of the well's orientation on the interferometric image is investigated. Moreover, a method is presented to estimate the imageable dips in an interferometric image, which can be used to design a more favorable shooting geometry and to gain additional knowledge about the target structures.


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