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Showing 1 to 7 of 7 for “"Migration velocity analysis"”.
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Kirchhoff Common Offset Migration Velocity Analysis via Differential Semblance
… and fast approach to obtain an accurate velocity model for seismic imaging. An accurate velocity model is prerequisite for obtaining the image that represents the true underground geological structure: major evidence to explore for potential reservoirs and indicate hydrocarbons. This …
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Joint migration velocity analysis of PP- and PS-waves for VTI media
… PP-waves with mode-converted PS reflections in migration velocity analysis can help build more accurate VTI velocity models. To avoid problems caused by the moveout asymmetry of PS-waves and take advantage of efficient MVA algorithms designed for pure modes, I suggest to generate pure …
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Theory and application of source independent full wavefield elastic converted phase seismic imaging and velocity analysis
… source of uncertainty in seismic imaging and velocity analysis applications. In this thesis, we develop source-independent methods for seismic imaging, seismic trace interpolation and velocity analysis using the interference between pure (PP and SS) and converted-phase (PS and SP) waves. For …
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Building Velocity Models for Steep-Dip Prestack Depth Migration through First Arrival Traveltime Tomography
… appropriate data acquisition, prestack depth migration, and an excellent seismic velocity model. Poststack time migrated seismic images, normal moveout velocity analysis, well logs, and other geologic information are used to build the velocity model. In regions of interest outside of …
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Derivation of Acoustic and Physical Properties from High-Resolution Seismic Reflection Data
… of the in situ seismic quality factor (Q) and velocity, within the uppermost 100 m of unconsolidated marine sediments. This was achieved using a single channel Chirp sonar (1.5-13.0 kHz) and a Boomer sonar (0.2-4.0 kHz) towed with a multi-channel streamer that provides offsets up to 80 m. These …
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Efficient seismic imaging with the double plane wave data
… goal for exploration geophysicists. Reverse time migration (RTM), which solves the two-way wave equation, can resolve all wavefield propagation phenomena. In geologically complex regions, RTM has been proven to outperform other imaging methods in correctly revealing the subsurface structures. …
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GPR data processing for reinforced concrete bridge decks
… human visual inspections during the iterative migration process for the estimation of the velocity/dielectric permittivity distribution from GPR data. Second, F-K filtering with dip relaxation is proposed for interference removal that is important for both imaging and the performance of …