Velocity Model Building and Updating for Improved Imaging in Subsalt Areas

Alice Laaouissi, Technical Sales Advisor, presents a fully integrated workflow in a subsalt environment. Alice Laaouissi, Technical Sales Advisor, presents a fully integrated solution where interpretation, structural modeling in a sub-salt environment, velocity updating and model validation can be performed with no technical compromises, no loss of data and fewer iterations.



Topics Covered
  • Building geologically constrained velocity models, to reduce uncertainties in depth imaging
  • Integrated workflow, from interpretation to velocity model update, to reduce model cycle time
  • Model validation, to gain knowledge about the quality and the integrity of the depth seismic image
Drilling in the vicinity of salt body flanks without penetrating them is a real challenge in subsalt areas. From the final seismic image, the interpreter has the responsibility to provide a structural interpretation and to build the final velocity model in a time-efficient manner, to produce accurate depth interpretation. We overcome the structural interpretation challenges by offering a fully integrated solution where interpretation, structural modeling in a subsalt environment, velocity updating and model validation can be performed with no technical compromises, no loss of data and fewer iterations. We present an intuitive workflow that features interconnected cutting-edge solutions for the interpretation and modeling of complex subsalt structural models around multi-Z surfaces, the definition of geologically constrained velocity models, and finally, a velocity modeling update and validation using Paradigm’s state-of-the-art tomography and illumination techniques.

Featured technologies: SKUA®, GeoDepth®