Multi-component inversion from 3-D seismic data integrated with structural interpretation can give vital insights to maximize value from an unconventional play. Here we introduce a workflow which is used for characterizing the Duvernay play in western Canada; a low permeability unconventional reservoir, both in a structural and lithologic sense. This includes the determination of a time-depth relationship using synthetic seismograms, generation of seismic derived structural maps, and the determination of the inversion-based parameters of density and P (compressional) and S (shear) wave velocity. The model-based procedure includes poststack (acoustic) inversion, AVO prestack inversion, and joint PP-PS inversion. With these rock properties determined, calculations are made to determine Young’s Modulus, Poisson’s Ratio and brittleness. Faults are mapped based on time slices, isochrons and observable correlatable vertical displacements. Seismic-derived attributes, when combined with structural mapping, can highlight zones most favorable to hydraulic fracturing. The mapping of structural discontinuities can also lead to an understanding of zones of pre-existing weakness, and an understanding of induced seismicity risk.
Presentation Date: Monday, October 15, 2018
Start Time: 1:50:00 PM
Location: 213A (Anaheim Convention Center)
Presentation Type: Oral