AI solutions as a base for Geohazards, Lithology and pore pressure prediction
High-resolution geohazard, pore pressure, lithology and porosity studies are provided in cooperation with ModelGeo.
Seismic velocity is an attractive parameter for geohazard interpretation, pore pressure analysis, play and prospect evaluations, and other geological studies, but ordinary seismic processing velocities often do not have a good enough resolution. We adapt a dynamic time warping algorithm to estimate geologically reasonable high-resolution velocities from average-quality seismic data that can be used for geohazard analysis based on 3D seismic data. To predict free gas and/or excess pore water pressure in thin shallow layers, we use velocity inversion. It is a method for simultaneous inversion of velocity data to geological attributes.
- V.Kalashnikova, I.Meisingset, R.Øverås and D.Krasova. High-resolution seismic velocity field estimation techniques and their application to geohazard, lithology and porosity prediction”, Near Surface Geophysics, 2020. Early View. https://doi.org/10.1002/nsg.12083
-V.Kalashnikova, R.Øverås, I.Meisingset, D.Krasova and A. Butt. High Resolution Velocity Attribute for Reservoirs, Lithology and Pore Pressure Prediction. Extended Abstract. GeoConvention 2018, Calgary May 7-11.
- R.Øverås, V.Kalashnikova, S.Guidard (PSS-Geo AS), I.Meisingset (First Geo AS). Construction Technique of High Resolution Velocity Field - New Attribute for Seismic Interpretation. The First EAGE/PESGB Workshop on Velocities in London, UK, Feb 22-23, 2018
Pore pressure and lithology are computed in cooperation with ModelGeo.