G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 1/28 (2006.01) G01V 1/48 (2006.01)
Patent
CA 2485761
Resonance scattering analysis of at least 3-component (3-C) VSP data detects heterogeneities in the proximity of a borehole. A method for seismic exploration of a pre-determined volume of the earth for assessing features of the volume using at least 3-C VSP data generated for the volume comprises: computing a resonance spectra indicating resonance scattering of the at least 3-C VSP data; and determining a lateral continuity of said features in accordance with the resonance spectra. Zero amplitude in a resonance spectrum indicates definite polarization of the direct pressure wave into the ray direction and very weak lateral heterogeneity along the path of the direct wave. High amplitudes in a resonance spectrum are observed if energy of the direct wave is observed on the horizontal components due to scattering at small-scale lateral heterogeneities near the receiver. Peak frequency provides information on the size and location of the scattering structure.
Bohlen Thomas
Milkereit Bernd
Bohlen Thomas
Milkereit Bernd
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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