Fully assessing a reservoir requires knowledge of many factors, such as porosity, permeability, pore pressure and fluid saturations. When carefully analyzed, well processed seismic data, combined with and calibrated by wireline logs and other borehole data, can go a long way in allowing these reservoir characteristics to be inferred on a field-wide scale. FSI was a pioneer in stratigraphic studies. The ‘AVO Atlas of the UK Continental Shelf’, released in the mid-1980's was an early landmark in the field.
FSI's services in the field of stratigraphic and interpretative processing are based upon a variety of technologies. Much of the software is proprietary, developed by FSI's R&D teams. Third-party solutions, such as the Jason Geoscience Workbench from Fugro-Jason, FSI's sister company in the Fugro Geoscience Division, and other industry-leading applications are available, to be used where beneficial.
FSI offers a variety of workflows where seismic amplitudes are used to derive petrophysical and other reservoir characteristics and properties. Study types include:
• AVO: Inferences from the variation of seismic amplitudes as a function of offset/angle
• Post-Stack Deterministic Inversion: Generation of AI volumes, and optional calibration to creation of lithotype datasets
• Pore Pressure Prediction: Estimation of formation pressures using seismic velocities via Eaton’s equation
• Scalar structural gradient: Determination of sub-surface dip and continuity
Recent offshore stratigraphic studies have been conducted in many areas - UK and Norwegian North Sea, West Africa, Greenland, Indonesia, India and Australia. FSI has also undertaken a wide variety of projects from onshore fields, including the UK, central and eastern Europe, India, South America and North, West & East Africa.