EAGE Short Course 3 A Guided Tour of Seismic Processing of Multiples; Concepts, Applications, Trends
Monday
2 June 2025
Time
8:30 - 17:30
CPD Points
5
Instructor
Dr. Clément Kostov
Independent Consultant
Course Overview
This course provides a broad overview of aspects of seismic data processing related to multiples in the seismic data. The course is structured in ten sections; we’ll start with definitions and examples of multiples, then discuss the roles of multiples in velocity model building and imaging workflows, then dive deep into prediction and adaptive subtraction methods for free-surface and internal multiples. In the final sections we’ll discuss published case studies (land and marine surveys from different geological environments), historical developments, emerging technology trends.
Course Objectives
- Select the right type of microseismic monitoring array to meet the goals that need to be monitored
- Design an optimal array for passive seismic (surface or downhole) monitoring, estimate in it uncertainties of locations for microseismic events
- Calibrate velocity model
- Mitigate hazards associated with induced seismicity by fluid injection
- Determine if the seismicity in the vicinity of an oilfield is likely related to injection or extraction of fluids.
Course Outline
First session:
1. Examples of multiples in seismic data, definitions of multiples, numerical modeling, synthetics datasets.
2. Multiple scattering at different scales in acoustic experiments (VSP, sonic, sea-bed profiling, crosswell, sonic). Using VSP and sonic data to gain understanding of multiples in surface seismic data.
3. Multiples in model building and imaging seismic data processing workflows. Multiples as noise or as signal.
4. Prediction methods for free-surface multiples and analysis of their properties; data-driven and model-based approaches.
5. Adaptive subtractions and results assessment
Second session:
6. Signal processing transforms and their applications to multiples
7. Up-down deconvolution and inversion methods for sea-bed and streamer data 8. Prediction methods for internal multiples; perspectives from Marchenko and Inverse Scattering Series theories.
9. Case study examples: deep-water marine, shallow-water marine, land (based on published case studies).
10. Wrap-up: historical developments, trends, emerging technologies.
For each of the ten topics above, there will be 20 min allocated, for a short presentation and time for questions and discussion. A handout and a reading list for each topic will be part of the material distributed before the class.
Participants’ Profile
The course is designed for geoscientists who work with or have an interest in surface seismic data and wish to gain a deeper understanding of the technology related to multiples in seismic data.
Prerequisites
Basic knowledge of surface seismic surveys and their acquisition, processing, and applications.
| Time | Activity |
|---|---|
| 08:00 | Departure from conference center Messe Wien |
| 09:00 – 09:20 | Safety introduction ITC |
| 09:20 – 10:50 | ITC / TECH Center & Lab |
| 10:50 – 11:00 | Group exchange |
| 11:00 – 12:30 | ITC / TECH Center & Lab |
| 12:30 – 13:30 | Lunch at the ITC event area |
| 14:30 | Arrival back at conference center Messe Wien |
