Stochastic Seismic Inversion (SSI)

Obtaining vertical resolution and non-uniqueness while integrating seismic data in reservoir modeling has always presented challenges in seismic processing workflows. The WesternGeco stochastic seismic inversion plug-in for Petrel software now brings this capability directly to the user’s desktop.

Features 

• Fully integrated with Petrel data, models, processes, workflow manager, and graphics
• Multiple realizations output directly into Petrel high-resolution complex corner point grids
• Choice of prestack inversion algorithms available for elastic rock properties: acoustic impedance, shear impedance, Vp/Vs, Poisson’s ratio, density
• Seismic modeling implementations based on alternative reflectivity versus incidence angle approximations including Aki-Richards, Fatti, Verm, and Hilterman
• Uses a probabilistic model for the spatial variations of elastic properties that includes variograms, trends, and property correlations which can be specified per reservoir zone

Applications

• Advanced reservoir characterization using integrated seismic and well data
• Geologic screening for the dynamic flow simulation
• Reservoir volumetrics, lithology, porosity, and fluid saturation uncertainties estimation