Advanced Imaging Solutions
We approach all depth-imaging challenges by looking for solutions. From initial exploration to reservoir monitoring, our experts utilize advanced prestack depth migration algorithms that enable us to tailor our approach to the specific requirements of each dataset and each project. Whatever the complexity of the subsurface, we aim to deliver the clearest subsurface image.
PGS offers a full suite of imaging algorithms ranging from ray-based Kirchhoff and Beam migrations to wave equation based migrations such as one-way Wave Equation (WEM) and Reverse Time Migration (RTM).
- All of our algorithms are amplitude preserving and Q-enabled and work with a range of survey geometries from narrow azimuth (NAZ) to the most advanced full azimuth (FAZ) surveys.
- Our imaging portfolio is equipped to handle velocity models with anisotropy up to tilted orthorhombic symmetry.
- Anisotropy and Q are handled consistently in our model building and imaging tools, ensuring the delivery of accurate images.
A unique output from our portfolio of PSDM algorithms is their ability to supply densely sampled 3D true amplitude azimuth-sectored angle gathers. This comes in addition to our ability to output more conventional offset gathers.
PGS TA3GS (True Amplitude Azimuth-sectored Angle Gathers) is a highly-effective workflow for image optimization and enhancement based on the azimuth/angle-gathers. The workflow allows for automated data selection and conditioning as the image is constructed, offering unparalleled control of what data to include in the image and what do discard. This helps to improve the image quality in the most complex and challenging areas.
To tackle the most demanding imaging problems we are able to combine TA3GS with our implementation of RTM. PGS benefits from a proprietary use of an Inverse Scattering Imaging Condition (ISIC) which suppresses migration artifacts and delivers cleaner gathers for velocity model building and image enhancements.