GEOTOMO.GEOTHRUST.2023
GeoThrust has been designed with a workflow architecture to obtain an accurate earth model and earth image in time and in depth from data recorded with irregular geometry in areas with rough topography, complex near-surface, and complex subsurface, with uncompromisingly high technical specifications for data analysis and quality control, but easy to learn and easy to use.

Distinctively Unique Features

• The near-surface model is estimated by nonlinear tomography applied to first-arrival times that accounts for topography and resolves lateral and vertical velocity variations.
• Aside from statics corrections, the corrections for the near-surface are performed by wavefield datuming --- an essential requirement for imaging from irregular topography.
• GeoThrust performs subsurface velocity estimation, modeling and imaging from topography, not from a flat datum, based on rms and interval velocities estimated at reflector positions, not at reflection positions.
• The system provides the analyst with powerful interactive tools to perform quality control of geometry and for appropriate specification of signal processing parameters, and image-based picking rms and interval velocities using four different strategies.
• The system is based on a workflow architecture that manages the project for the analyst and allows the analyst to focus on the geological and geophysical aspects of the project.

 

Anisotropic Time Imaging (PSTM)

• First Arrival Traveltime Tomography based near-surface statics
• Migration velocity, gradient, and anisotropic parameters scan along horizons
• Target –oriented multiple attenuation
• High-amplitude, random, coherent noise attenuation
• Kirchhoff / Wave Equation Migration from Topography
• Crooked-line Imaging

 

Anisotropic Depth Imaging (PSDM)

• First Arrival Tomography / FWI Near-surface Model
• Reflection* / Fast Beam Tomography* Subsurface Model
• Tomo-holistic Depth Image Model
• Kirchhoff / Wave Equation / RTM* / Gaussian Beam Migration*