3D SEISMIC ATTRIBUTES
 
Location: London, UK.
 
Course Dates: March 25-29, 2019
 
Instructor: Prof. Jose Regueiro S., Ph.D., Colorado School of Mines / Geophysicist / Professor / Consultant / Instructor.
 
Who should attend:
This course is intended for geophysicists, geologists, and reservoir engineers, with some basic knowledge of the seismic reflection method.
 
 
 
Course Objective:
To describe the so-called Seismic Attributes, as well as their applications in the processes of 3D Seismic Data interpretation, emphasizing the utility of this type of information during the phases of exploration and/or reservoir characterization.
 
Duration: 24 hrs. (theory and examples) + 16 Hrs. workshop
 
Introduction
History and Classification of Seismic Attributes
Review of Basic Concepts of Seismic Wave Propagation
Brief Aspects of Seismic Data Acquisition and Processing
Color Display and 3D Visualization
Time Attributes
Amplitude Attributes
Complex Trace Attributes – Hilbert
Spectral Decomposition
Other Spectral Attributes
Geometrical - Structural Attributes
Seismic Fracture Analysis
"Seismic Energy" (detuning)
Textural Attributes
Multi-Attribute Facies Classification
Multi-Attribute Properties Estimation
 
 
Course benefits;
At the end of this course, the participants should we able to apply 3D Seismic Attribute Analysis, and extract from them important information, which should help in identifying structural, stratigraphic, and rock/fluid parameters associated with their reservoirs. They should be capable of making decisions concerning the use of the results, coming from these types of information, in the evaluation and prognosis of the reservoirs models under their responsibility.
 
3D SEISMIC ATTRIBUTES
 
DETAILED CONTENT (24 hrs.)
 
Introduction
History and Classification of Seismic Attributes
Definitions
Brief History of the Development
Attribute Classifications
Applications of Seismic Attributes
Review of Basic Concepts of Seismic Wave Propagation
Waves in Isotropic, Elastic Medium
Reflection of Seismic Waves
Zoepprits Equations
Normal Incidence vs Oblique Incidence
The Convolutional Model
Seismic Resolution
Seismic Velocities
Elastic vs Petrophysical Parameters
Brief Aspects of Seismic Data Acquisition and Processing
The CMP Method of Seismic Data Acquisition
Basic Processing Sequence
Data Conditioning
Amplitude Recovery
Noise Attenuation
Velocity Analysis
Statics
Multiple Attenuation
Predictive Deconvolution
Migration
Post-stack Filters
Color Display and 3D Visualization
The Meaning of the Data
Basic Seismic Data Displays
Color Models
RGB Color Model
Opacity and Transparency
Depth of Color
Color Scales
Time Attributes
Post Stack Transit Time
Time is NOT Depth
Pull Up - Pull Down Effect
Time Surface
Delta T – Isochore
Wedge Model Discussion - Interpretation
Amplitude Attributes
The meaning of Amplitudes
Polarity
Phase
Low vs High Impedance Reservoirs
Effects of Thickness on the Amplitudes – Tuning
Extracting Amplitude Information
Interval Attributes
Optical Stack – Transparency
Brief Discussion of AVO Concepts
Brief Discussion of Seismic Inversion
Complex Trace Attributes – Hilbert
Seismic Waves as Analytic Signal
The Meaning of Complex Attributes
Instantaneous Amplitude –Envelope
Instantaneous Phase
Instantaneous Frequency
Response Attributes
Suite of Instantaneous Attributes in OpendTect
Sweetness
Pseudo Relief
Spectral Decomposition
Introduction
Commonly Used Methods
Discreet Fourier Transform
Continuous Wavelet Transform
Some Applications
Stratigraphy - Thickness Variations
Energy Absorption
RGB Blending of SD DATA
Other Spectral Attributes
Dominant Frequency
Average Frequency
Median Frequency
Maximum Spectral Amplitude
Area Beyond Dominant Frequency
Frequency Slope Fall
Wavelet Energy Absorption
Geometrical - Structural Attributes
Introduction – Definition
Dip and Azimuth
Dip Scan - Dip Steering
Seismic Coherence
Similarity
Semblance
Curvature
Edge Detection
Seismic Fracture Analysis
Introduction
Role of Seismic in Fracture Reservoir Characterization
3D Seismic Interpretation of Faults
Seismic Anisotropy
Transverse Isotropy… VTI vs HTI
P waves Azimuthal Analysis
Shear Wave Splitting
Azimuthal AVO
"Seismic Energy" (detuning)
Seismic Energy Concept
Detuning 3D Seismic Data
Textural Attributes
Seismic Textures
Grey Level Co-occurrence Matrix
Energy
Entropy
Contrast
Homogeneity
Multi-Attribute Facies Classification
Fundamental Idea
Classification Techniques
Use of Cross plots as Classification Method
Seismic Facies - UVQ Classification
K-Means
Kohonen Self Organizing Maps
Unsupervised vs Supervised Methods
Meta Attributes
Multi-Attribute Properties Estimation
Estimation Techniques
Linear Regression
Multi-Linear Regression
Insight into Neural Networks
Probabilistic Solutions
 
WORKSHOP (16 hrs. – optional)
 
Duration: 5-day
 
Number of Participants: Max 20
 
Prerequisites: None