We develop an automated passive source detection procedure based on the Generalized Discrete Radon Transform (GDRT).The latter extends discrete slant-stack data transformations and the decoupled Prestack Depth Migration (PreSDM) algorithm used in scalar and vector seismic processing. It is implemented as weighted summation of deconvolved trace samples along a set of prescribed traveltime surfaces. This summation is performed with decoupled migration amplitude weights that minimize cross-talk between modes and suppress aliasing artefacts during the imaging process. Instantaneous prestack dip attributes define initial ray directions towards unknown source locations. Input data represent multicomponent micro-seismic recordings as well as the background isotropic or anisotropic velocity model. The procedure shows source points explicitly by high amplitudes within the Rayleigh''s limit of resolution. Application to imaging hydraulic fractures is considered. Results show that the method resolves point source objects better than conventional coupled Kirchhoff PreSDM.
Skip Nav Destination
The Generalized Discrete Radon Transform Applied to Passive Source Decoupled P/S Imaging
Paper presented at the 2005 SEG Annual Meeting, Houston, Texas, November 2005.
Paper Number: SEG-2005-1284
Published: November 06 2005
Droujinine, Alexander, and Elmar Rothert. "The Generalized Discrete Radon Transform Applied to Passive Source Decoupled P/S Imaging." Paper presented at the 2005 SEG Annual Meeting, Houston, Texas, November 2005.
Download citation file:
Don't already have an account? Register