Seismic Acquisition and Processing - From Basics to Modern Concepts (GPH07)

Description

The acquisition and processing of seismic data is indispensable for any successful exploration and production project. It is essential to know what additional information a newly acquired or re-processed vintage seismic dataset can deliver to the interpreter or reservoir engineer. Nevertheless, many users of seismic data are unfamiliar with seismic design principles and data processing. Moreover various technological developments in recent years have led to complex and sometimes confusing terminology.
This course is intended to give you a sound understanding of the essentials of seismic acquisition and processing and shows how this understanding can help you in your day-to-day work.

Course Level: Foundation / Skill
Duration: 5 days
Instructor: Christian Stotter

Designed for you, if you are...

A geologist, geophysicist or petroleum engineer, who uses seismic data in daily work and who wants to know about the potential and limitations of seismic data depending on the used acquisition parameters and processing workflows
A geoscientist or manager involved in seismic acquisition and processing projects, as the acquired knowledge will help you in the tender process and operational phase of seismic acquisition and processing projects

How we build your confidence

Determination of basic seismic acquisition parameters using wave propagation principles and existing data will give attendees practical understanding of land and marine survey design
The effects of changing key survey parameters will be shown on real data and case studies
Basic processing concepts will be derived intuitively from signal processing and wave propagation principles
Attendees will get hands-on experience in seismic data processing on real data examples and state of the art seismic processing software
Benefits and pitfalls of modern imaging algorithms will be shown on case studies from different geologic environments
In a seismic tender exercise participants will define acquisition and processing parameters based on principles they have learned during the course

The benefits from attending

At the end of the course you will have a good understanding of the possibilities but also pitfalls and limitations of seismic data acquisition and processing projects. With that foundation you will feel confident to:

Evaluate basic survey parameters for seismic acquisition
Judge the relative importance of seismic acquisition parameters for specific geologic targets
Distinguish between different seismic acquisition proposals based on provided survey parameters
Perform basic QC and parameter evaluation for seismic processing projects
Evaluate a processing sequence for seismic data processing tenders
Better interact with experts in the fields of seismic acquisition and processing
Assure optimal use of financial resources

Topics

Overview and introduction
Elementary theoretical concepts
- Seismic wave propagation, reflection and transmission
- Approximate concepts: acoustic waves, rays and the convolutional model
Sampling and aliasing components of seismic acquisition projects
Target oriented seismic survey design - 2D and 3D surveys
Source and receiver parameters and configurations
Seismic acquisition timeline - from design to operations
Signal processing fundamentals
Pre-processing
- Seismic-navigation merge
- De-signature, zero phasing
- Noise removal - swell and de-spike
- Gain recovery
- Deconvolution
- Multiple removal - SRME
- Data regularisation and interpolation
- Velocity analysis, NMO and stack
Pre-stack time migration
Post-processing
Depth imaging and tomography
Novel acquisition and processing methods
- Wide azimuth survey geometries
- Simultaneous source acquisition
- COV processing
- Three components - aspects of ocean bottom processing
- Full wave form inversion concepts