Velocities for Depth Conversion and Imaging Course

تفاصيل الدوره

Velocities for Depth Conversion and Imaging Course

Duration : 5 Days / 20 Hours

Locations : Cairo - Egypt

Available ONLINE via Google Meet

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محاور الدوره

Course details

Seismic data is acquired in time - the time taken for the sound to travel from the source to reflectors and to return to receivers. However, wells are drilled in depth, not time. Variations in velocity can distort the depth, size, and shape of possible reservoirs. Therefore, conversion from time to depth is needed for a clear picture of the prospect and the risks involved. This course will teach you how to use velocity information and structural inputs to build a consistent velocity model and/or calibrate ones that have been created during seismic data processing.

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Course Objectives

How To:

Understand the various types of velocities, their calculation, and the validity of their interpolation and extrapolation

Compare, quality control, smooth, and combine the various velocity types into an integrated velocity model

Validate model quality by examining the changes in velocity needed to tie the seismic

Use the model to convert horizons, faults, and seismic data from time to depth

Understand at an introductory level, how velocity models are used for other studies such as forward modeling and pore-pressure prediction

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Course Outline:

1Velocity: definition and comparison of the many types of velocity including average, interval, RMS, stacking, migration, P-wave, and S-wave

2Velocity Inputs: accuracy and regional extent of each, including check shots, VSPs, sonic logs, time/depth functions, well picks and pseudo velocities, seismic velocities, and horizons for structural control

3Synthetic Seismograms: creation, upscaling, and tie to seismic data. Advanced synthetics including synthetic gather creation, Zoeppritz equations, AVA, and AVO

4Matching Synthetics to Seismic: calibrating the seismic data to the well data

5Seismic Velocities: semblance analysis, velocity picking, multiples, and how seismic velocities differ from well velocities

6Migration and Migration Velocities: introduction to pre- and post-stack algorithms, tomography, and iterative velocity analysis

7Velocity Model Building: workflows to integrate stacking velocities, time/depth curves, well picks associated with seismic horizons (pseudo-velocities), and structure from horizons

8Time-to-Depth Conversions: vertical stretch, inverse raytracing, migration, and uncertainty

9Introduction to Advanced Topics: anisotropy, pore-pressure prediction, geostatistics, and forward modeling

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Who should attend?

Early-career geoscientists and engineers, especially seismic interpreters.

anyone who needs to understand the basic theory and procedures for creating velocity models and converting seismic data from time to depth.

This is a foundation level course. It is neither designed nor paced for the experienced velocity modeler or processor.

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Please fill out the following application

https://bit.ly/3VpAHKh

for more information:

00201068756865

Email: itcgroup.training.con@gmail.com or info@itcgroup.org