Time to Depth Conversion: The Geostatistical Approach
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Price: Euros 1650/participant
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Objective
This course provides a sound understanding of geostatistical solutions to time-to-depth conversion issues. You will learn how to make the best use of all the available information (wells and seismic).
Key features
Exploratory data analysis focused on correlation between wells and seismic (TVD, TWT and velocities). Pros and cons of collocated cokriging and kriging with external drift. 3D seismic data processing including filtering techniques.
Who should attend
Geologists and geophysicists involved in data interpretation and mapping of surfaces limiting the reservoirs. A basic understanding of geostatistics is required (variograms & kriging).
Course content
- Recalls on the basic geostatistics: exploratory data analysis, variography, kriging.
- The problematic of time to depth conversion: time interpretation, evaluation of the information on velocities and standard models.
- Multivariate geostatistical models: cross variograms, cokriging.
- Analysis of the correlation between TVD-TWT and velocities.
- Presentation of the 2 main methods for mixing wells and seismic data:
- Collocated cokriging: particular case of the Markov assumption.
- Non stationary model: kriging with external drift.
- 3D seismic data processing: calibration of velocity from stacking velocity cube.
Half of the course is dedicated to practical computer exercises using Isatis in order to reinforce the previously presented theoretical notions.
This course may be scheduled for another date and/or location. Tailored courses may also be organized on client demand. Please contact your sales representative to request more information.
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