DHIs & AVO FOR NON GEOPHYSICISTS
Amplitude Anomalies, DHIs, AVO, Fluid Substitution Analysis for non-geophysicists
- Course Type
Classroom Course - Duration
4 days - Thematic
Geosciences - Location
- Country
ANYWHERE -
Satisfaction rate
Why should you attend?
The course will provide full understanding of AVO/AVA theory, methodology, advantages, limits and pitfalls, boosting the technical expertise of all geoscientists with non-geophysical background.
Interpreters and team leaders will achieve clear and complete vision of which is an amplitude anomaly, the most correct way to identify and de-risk DHIs on seismic, what is the AVO/AVA analysis, allowing effective early detection of seismic anomalies and improving cooperation with geophysicists.
Main Objectives:
- To improve geoscientists’ knowledge and understanding of seismic anomalies
- To identify potential DHIs and correctly de-risk them
- To explain how, when and why to run AVO/AVA qualitative analysis
- To share knowledge and experiences
Learning Approach:
Attendants will learn through live course, with hand-on practical exercises and a booklet.
They will run on their own or in pairs exercises on theory of seismic reflection, seismic polarity identification, Acoustic Impedance and Reflection Coefficient calculation, DHIs identification on seismic data, qualitative analysis of AVO parameters and Classes, Intercept vs Gradient cross plot generation etc. with the help and support of the teacher.
Results will be checked at the end of each day and shared among students, to facilitate knowledge sharing.
All documents are provided.
HSE requirements:
No specific requirement for this course that can take place in any meeting room with validated HSE characteristics, in your company premises or elsewhere.
Course Agenda:
Four to five days (28-35 hours) is the ideal time. The course can be shortened or lengthened according to the request.
Day 1:
- Fundamentals of seismic reflection
- Seismic velocities
- Acoustic impedance
- Reflection Coefficient
- The Poisson’s coefficient
- The Relationships among AI, Seismic velocities, Poisson’s ratio, Depth
- Exercises
Day 2:
- Reflection Amplitudes
- Direct Hydrocarbon Indicators (DHI)
- Identification and de-risking on seismic data
- Amplitude anomaly extraction and mapping
- DHIs Sum Up and Pitfalls
- Exercises
Day 3:
- AVO/AVA
- AVO Theory
- Practical Methodology
- The Gather Analysis
- AVO Classes
- Exercises
Day 4:
- Intercept (R0) and Gradient (G) cross plots
- Fluid substitution
- AVO/AVA Sum up, Checks and Pitfalls
- Exercises
Prerequisites
The course is addressed to all geoscientists with non specific geophysics background, like geologists, reservoir engineers and team/project leaders involved in exploration and development projects in which amplitude anomalies play a major role. This class will provide simple, clear and complete knowledge and understanding of seismic anomalies, Direct Hydrocarbon Indicators, AVO/AVA and Fluid Substitution, allowing to run early detection of possible targets on seismic data, to de-risk a prospect and to effectively cooperate with geophysicists and specialists in reservoir characterization and fluid detection techniques.
A number of exercises and examples based on real cases and direct work experience will implement the content of this course.
