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GEO 128

AVO & Inversion

COURSE SCHEDULE

Code Date Location price (€)*
GEO 128 8 - 12 Feb 2027 Online 3300
GEO 128 14 - 18 Jun 2027 Online 3300
GEO 128 11 - 15 Jan 2027 Oslo 4400
GEO 128 11 - 15 Oct 2027 Abu Dhabi 4400

COURSE OVERVIEW

Seismic AVO (Amplitude Versus Offset) describes how the amplitude of seismic reflections changes with increasing offset between the source and receivers and is more properly described as Amplitude Versus Angle of incidence (AVA). The reflection amplitudes change with angle of incidence due to contrasts in elastic rock properties and the type of fluids present in the pore space. The exact AVA for a plane wave incident on a plane interface is described by the Zoeppritz matrix equation. 

The main benefits of AVA are, therefore, identification of lithology, fluid saturation and anisotropy. It plays a significant role in supporting reservoir characterization. As the assumption of a single, isolated interface is often violated, more sophisticated approaches are needed and will be discussed.
Various inversion methods exist, from simple to very sophisticated. Among them, the use of AVA attribute inversion will be discussed.
Use of Machine Learning applications will be an important part of the course. Exercises and quizzes will enhance the learning.

COURSE OUTLINE

5 days
Day 1:

o Geophysical Methods,

o Seismic: Workflow, Seismic for AVA

o Rock Physics

o Effective Media

Day 2:

o Lithology & Fluid Prediction

o Gassmann Fluid Replacement

o Inhomogeneity & Anisotropy

o AVA Zoeppritz

o Tuning Effects

Day 3:

o EI, EEI, EPI, Lambda-Mu-Rho

o AVA (ΔRPP, ΔRSS)

o AVA Rps

o VNMO-azi, AVAz Fractures,

o AVA VTI-, HTI-, Ortho-Anisotropy

Day 4:

o Hydrocarbon Indicators

o Inversion

o ML AVA Tutorial

o AVA Inversion

Day 5:

o Machine Learning

o ML Regression

o Porosity prediction from seismic

o Use of ChatGPT

INSTRUCTOR

Instructor Profile

The instructor earned a PhD from Utrecht University with a dissertation titled “Full Wave Theory and the Structure of the Lower Mantle.” He subsequently joined Shell Research, where he developed integrated methods to predict lithology and pore-fluid properties using seismic, petrophysical, and geological data. He later moved to Shell in London, interpreting seismic data from the Central North Sea Graben. As part of a Quantitative Interpretation initiative, he played a key role in managing, processing, and interpreting Well Seismic Profiling (WSP) data. He also led a team responsible for developing 3D interpretation methodologies based on multi-attribute statistical analysis and pattern recognition techniques. He later became Head of Geophysics at the Shell Learning Centre while simultaneously serving as a part-time Professor of Applied Geophysics at Utrecht University. Between 2001 and 2005, he focused on the development and application of potential field methods (gravity and magnetics) for hydrocarbon exploration. From 2008 to 2013, he served as a Visiting Professor at the German Technical University in Muscat. In the later phase of his career, he became a leading advocate for electromagnetic (EM) methods, contributing to the design, acquisition, processing, and interpretation of Marine Controlled Source Electromagnetic (CSEM) surveys.

FAQ

DESIGNED FOR

The course is designed for geophysicists involved in the design of a seismic survey (acquisition & processing) for AVA or asset team members specifying the requirements in view of reservoir characterization.

LEARNING OBJECTIVES

The course's primary learning objectives are: 

o The reflection of a plane wave at a single isolated interface.

o The various linearization options using different elastic parameterization

o The inclusion of fractures in the expressions

o The inclusion of AVA attributes in AVA inversion

o Use of Machine Learning in AVA applications

REGISTER

Registration is now OPEN!

Ph.D. students, group and early bird registrants are eligible to DISCOUNT!

For more details and registration please send email to: register@petro-teach.com

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