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Acoustic Response of Thin Cylindrical Structures Piercing Horizontally Stratified MediaNormal access

Authors: I.A. Karpov and B. Arntsen
Event name: 79th EAGE Conference and Exhibition 2017
Session: Diffraction Modelling and Imaging
Publication date: 12 June 2017
DOI: 10.3997/2214-4609.201700862
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.5Mb )
Price: € 20

Summary:
We analyze response of vertical cylindrical structures embedded in horizontally stratified media. Both the cylinders and the host media are liquid. Diameter of the cylinders is less than or approximately equal to the dominating wavelength of the signal, which represents investigation of some boreholes and natural pipes using conventional seismic exploration. We model the data with the spectral element algorithm and benchmark the method against a precise semi-analytical solution. The results show that the spectral element algorithm is a reliable method for modelling such a structure and that even thin cylinders can produce strong scattered waves visible on the recording.


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