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Seismic Data Conditioning for QI
The adage “garbage in garbage out” is computing slang for the idea that putting bad data into a program will give bad results. The concept applies equally well to quantitative amplitude interpretation and AVO inversion. Sharp Reflections’ PreStack Pro software has a rich array of algorithms allowing you to QC and enhance seismic data quality prior to quantitative interpretation (QI). Our software is powered by a modern High-Performance Computing (HPC) engine, and integrates QC, processing, and analysis in a single workflow. This interactive course will cover processing techniques to quickly improve the quality of your data, as well as the design and execution of multi-step processing workflows.
You will use a working field dataset to test and apply QC and processing algorithms. You will learn to apply targeted QCs or “health checks” to assess seismic noise levels and amplitude integrity, before and after data conditioning. At the end of the course, you should have a good understanding of how to flatten gathers, remove multiples and other noise as well as assess the AVA compliance of your data.
PreStack Pro is one of the industry’s fastest and most flexible post-migration gather conditioning toolkit, with over 40 individual processing filters. These processes are fully integrated together with the QI functionality of the software, so you can see the impact of your conditioning workflow on the final product in real time. The conditioning applies to conventional marine and land seismic data, to azimuthal and time-lapse (4D) seismic, which are covered by other courses.
See how much your data can be improved without going to expensive and time-consuming full reprocessing.
Course takeaways
On completion participants will be able to:
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- Generate and assess pre-stack synthetics as a tool to calibrate your processing
- Assess the quality of pre-stack and partial-stack seismic data
- Identify areas where noise damages the ability to perform amplitude analysis
- Flatten, denoise and balance gathers
- Understand, create and execute workflows as well as offline processing
- Measure the level of uplift in data quality following your conditioning sequence
Recent Training Testimonials
“This has been one of the best courses I ever attended!”
“Thank you for the course! Tons of great info, it will be very useful. I appreciate it.”
“Great video lectures and great course material. Will go through this again with my own data.”
“The virtual class was very productive for me.”
“Very knowledgeable instructors.”
Program:
Half Day 1
- A brief overview of PreStack Pro and the Johan Sverdrup field
- Pre-stack synthetic versus seismic
- Seismic QCs
- Seismic health checks
Half Day 2
- Commonly used conditioning workflows
- Gather flattening
- Impact on health checks
Half Day 3
- Coherent noise attenuation
- Impact on health checks
Half Day 4
- Random Noise Attenuation
- ECED / 3D EPS3D
- Spectral Balancing
- Impact on health checks
- Discussion
Prerequisites
Delegates should be familiar with basic PreStack Pro functionality and have a basic level of understanding of seismic data processing. Attendance of Sharp Reflections’ Introduction to Pre-Stack Data Analysis provides this, but it is not a requirement – our team of experts will be on hand to help. The course will be run online, so access to internet (recommended at least 15Mbs) and a large display are the only requirements. Participants will need to display a training manual, a Teams video session, and PreStack Pro software at the same time.
Hardware requirements
You don’t need a supercomputer to process the data sets. We will test your environment together beforehand – here’s what you will need:
- An up-to-date browser (eg Chrome, Safari, Firefox) with a stable internet connection (>15Mb/s)
- Ability to install HP Remote Graphics Software – download for free here for PC or here for MAC
- Ability to use Teams video-conference application
- A reasonable desktop/screen area (minimum 1920 x 1080), but to get the best experience we recommend two screens.
- Ability to display or print PDF guide to follow while working.
- Ability to view MP4-video files.
- A microphone and speaker or headphones.