Abstract
The fine characterization of channel sand body is a complex system engineering. The longitudinal superposition relationship of channel is complex, the sandstone thickness is thin, and the lateral changes of lithology and physical properties are obvious. It is necessary to carry out the research on the integration of processing and interpretation and seismic geology. The key technologies of seismic high-resolution pre stack and post stack inversion of medium and shallow channel sand bodies with “improved HHT point spectrum whitening” and “weak sidelobe wavelet structure” as the core and “azimuth well control inversion modeling” and “Cauchy regularization high-resolution inversion” as the core have been formed through experimental research.
Highlights
The poor imaging, low resolution and low signal-to-noise ratio of existing seismic data in middle and shallow layers make it impossible to effectively resolve the thin-layer (510 m) channel sand deposited in the river phase in middle and shallow layers, low coincidence rate predicted by reservoir inversion and paradoxically prominent well shock
Pilot investigations were conducted to form the key techniques for high-resolution imaging of meso shallow channel sand body earthquakes with cores of " improved HHT point spectrum albinism " and " weak paravalved daughter wave construction ", and for highresolution pre stack and post stack inversions with cores of " azimuthal well controlled Inversion Modeling " and ""Corsi regularized high-resolution inversion "[1]
2.1 Improved HHT point spectrum whitening technology Key technologies HHT point spectrum whitening technology is the key technology of post stack high-resolution processing
Summary
The poor imaging, low resolution and low signal-to-noise ratio of existing seismic data in middle and shallow layers make it impossible to effectively resolve the thin-layer (510 m) channel sand deposited in the river phase in middle and shallow layers, low coincidence rate predicted by reservoir inversion and paradoxically prominent well shock. Pilot investigations were conducted to form the key techniques for high-resolution imaging of meso shallow channel sand body earthquakes with cores of " improved HHT point spectrum albinism " and " weak paravalved daughter wave construction ", and for highresolution pre stack and post stack inversions with cores of " azimuthal well controlled Inversion Modeling " and ""Corsi regularized high-resolution inversion "[1]
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