Seismic Velocities and Depth Conversion - SVDC - In House Training
Course
In San Francisco (USA)
Description
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Type
Course
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Location
San francisco (USA)
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Start date
Different dates available
Seismic Velocities and Depth Conversion - In-house training by PetroSkillsThis course can be conducted on site at your location exclusively for your staff. 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. First all input velocity data must be quality controlled and a calibrated velocity model created. Then the model is used to convert time horizons and seismic time data to depth. Both pre-stack and post-stack migrated data are considered. Participants are introduced to some of the velocity problems encountered in depth-migrated data, now more widely available. Each section of the course is supported with in-class exercises. Each student is provided with a USB flash drive that contains the exercises and all needed data and software. The class requires the use of a windows PC laptop or workstation for every student or every two students. Each section of the course is supported with in-class exercises, included on a USB flash drive that contains the exercises and all needed data and software. As a foundation class, the instruction starts with the basics and proceeds to more complex topics. The student should have a basic understanding of geophysics such as offered in PetroSkills' Basic Geophysics course. Little advanced math (calculus) is used, but algebra and lots of diagrams are applied to explain the needed concepts. One personal computer is provided, at additional cost, for each two participants. Find out more
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Subjects
- Flash
- Geophysics
- Basic IT training
- Basic IT
- Basic
Course programme
This in-house training programme can be customised to meet your specific requirements. It typically covers:
- Velocity: definition and comparison of the many types of velocity including average, interval, RMS, stacking, migration, P-wave, and S-wave.
- Velocity 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
- Synthetic Seismograms: creation, upscaling, and tie to seismic
- Advanced synthetics including synthetic gather creation, Zoeppritz equations, AVA, and AVO
- Matching Synthetics or VSPs to seismic data
- Seismic Velocities: semblance, picking, multiples
- Migration and Migration Velocities: introduction to pre- and post-stack algorithms, tomography, and iterative velocity analysis
- Velocity Model Building: workflows to integrate stacking velocities, time/depth curves, well picks associated with seismic horizons (pseudo-velocities), and structure from horizons
- Time to Depth Conversions: vertical stretch, inverse raytracing, migration, and uncertainty.
- Introduction to Advanced Topics: forward modeling, pore pressure prediction, anisotropy, and geostatistics
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Additional information
Expenses
PetroSkills can bring the course to your site or to any convenient location you choose, helping you save time and reduce costs.
Seismic Velocities and Depth Conversion - SVDC - In House Training
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