In the oil and gas industry, several data sources contribute to building Earth models. To deliver consistent and fully integrated solutions, these disparate models must be internally consistent and integrally linked as they are representations of the properties of the earth at spatially variant scales. So, to build models using measurements from different disciplines, the process must integrate these data to result in a unified Earth model – the multidisciplinary WesternGeco GeoSolutions approach therefore seeks to drive consistency between all models, regardless of their scale.
For example, with Earth modeling for depth imaging, factoring in anisotropy is now accepted as an absolute requirement – not just vertical transverse isotropy (VTI), but increasingly tilted transverse isotropy (TTI). WesternGeco GeoSolutions, in concert with Petrel software, has developed workflows to build and verify TTI models rapidly and accurately. Additionally, as requirements for prospect determination become increasingly stringent, understanding and quantifying the inherent uncertainty of a given seismic dataset is paramount to the risk assessment process: our uncertainty analysis workflows deliver multiple realizations of Earth models that would flatten the seismic gathers, but correct positioning would only likely be realized with the model yielding the minimum uncertainty.
WesternGeco GeoSolutions is uniquely positioned to integrate the full spectrum of basin-to-pore measurements thanks to our multidisciplinary capability that encompasses the various workflows, technologies, and expertise resident within the organization.
Some of the disciplines that can be involved in a WesternGeco GeoSolutions unified Earth model.
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