Dynamic Time Warping and Dynamic Auto Correlation

Seismic velocities are valuable information that most of the time is not fully exploited in exploration work. We normally construct accurate velocity fields for seismic data processing, AVO gradients, depth conversions, imaging processing, and we use one of these fields, e.g. when translating seismic velocities to pore pressure. In more seldom cases, we use velocity for quantitative analysis like lithology (Hubred J.H. & Meisingset I., 2013) and fluid predictions, which are important for exploration.

 

We propose a High-Resolution Velocity estimation algorithm that can be used to predict possible reservoirs, lithology and geohazard situations.

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. https://onlinelibrary.wiley.com/doi/abs/10.1002/nsg.12083

 

Extended Abstract: 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

Visit GeoConvention 2018, Calgary May 7-11. Reads Extended Abstract, here: V. Kalashnikova, R.Øverås , I.Meisingset, D.Krasova and A. Butt. High Resolution Velocity Attribute for Reservoirs, Lithology and Pore Pressure Prediction.

​ "P-wave" estimation prior drilling

WARP, Proir drilling, HighRes, Velocity

HighRes Velocity by WARP and lithology and Geohazard prediction based on it

Geohazard prediction, overpressure, lithology

Advantage of High-Resolution interval velocities over seismic interval for seismic interpretation, particular for lithology prediction.

Lithology from velocity, WARP

Data courtesy TGS, Lithology prediction and geohazards - First Geo AS

 

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"P-wave" estimation prior drilling