Lunn Upstream Consultants with Hampshire Geoscience Ltd

Deepwater Seismic Interpretation Skills Course

"a course for interpreters given by interpreters"



The contents list for the manual is shown below. The course will cover this material and will be supplemented by a series of exercises. The key references for the course will be documented on the course CD.

CHAPTER 1 INTRODUCTION

CHAPTER 2 DEPOSITIONAL MODELS FOR DEEPWATER SYSTEMS

2.1 BASIN SETTING

2.1.1 Introduction
2.1.2 Basin Types
2.1.3 Controls on the development of deep marine clastic systems

- Hinterland type and climate
- Variations in clastic supply
- Entry point distribution
- Sea level variations
- Slope geometry
- Shelf geometry
- Mobile substrates
- Local tectonics
- Basin bathymetry
- Basin margin and geometry

2.1.4 Conclusions
2.1.5 References

2.2 SEQUENCE STRATIGRAPHRAPHY OF DEEP MARINE SYSTEMS

2.2.1 Introduction
2.2.2 Deep marine clastic development during lowstands
2.2.3 Deep marine clastic during highstands
2.2.4 Deep marine clastic during transgressions
2.2.5 Hierarchical sequence stratigraphy
2.2.6 Conclusions
2.2.7 References

2.3 INTRODUCTION TO THE STRATIGRAPHY OF DEEP MARINE CLASTICS

2.3.1 Introduction
2.3.2 Definitions
2.3.3 Classification Scheme
2.3.4 Depositional Elements
2.3.5 References

2.4 CHANNELS

2.4.1 Introduction
2.4.2 Channel Gallery
2.4.3 Channel Characteristics and Classification
2.4.4 Channel Fill Models
2.4.5 Hierarchical Channel Models
2.4.6 Reservoirs Characterisation
2.4.7. Post Depositional Modification of Channels
2.4.8 Hydrocarbon Habitat
2.4.9 Exploration Tools and Techniques
2.4.10 Recognition Criteria Checklist
2.4.11 Conclusions
2.4.12 References

2.5 OVERBANKS

2.5.1 Introduction
2.5.2 Description
2.5.3 Depositional Processes
2.5.4 Sequence Stratigraphic Setting
2.5.5 Hydrocarbon Habitat
2.5.6 Effect of Compaction on Overbank Deposits
2.5.7 Tools and Techniques
2.5.8 Recognition Criteria Checklist
2.5.9 References

2.6 TERMINAL LOBES

2.6.1 Introduction
2.6.2 Description
2.6.3 Seismic Expression
2.6.4 Reservoir Prediction
2.6.5 Hydrocarbon Habitat
2.6.6 Tools and Techniques
2.6.7 Recognition Criteria Checklist
2.6.8 References

CHAPTER 3 TOOLS & TECHNIQUES

3.1 - HORIZONTAL SECTIONS

3.1.1 Introduction
3.1.2 Time Slices
3.1.3 Horizon Slices
3.1.4 Proportional Slices
3.1.5 Datumed Horizon Slices
3.1.6 Stratal Slices
3.1.7 Conclusions
3.1.8 References

3.2 - INSTANTANEOUS & INTERVAL ATTRIBUTE EXTRACTIONS 

3.2.1 Introduction
3.2.2 Attribute Description

A) Instantaneous Attributes
B) Interval Attribute Extractions
- Interval definition
- Interval Attribute description

3.2.3 Applications
3.2.4 Conclusions
3.2.5 References

3.3 - SEISMIC FACIES ANALYSIS

3.3.1 Introduction
3.3.2 Seismic Facies Models
3.3.3 Amplitudes Extracted from 3D Seismic Data
3.3.4 Wavelet Analysis of Transitional Reflectors
3.3.5 Digital Facies Analysis
3.3.6 Conclusions
3.3.7 References

3.4 - 3D VISUALIZATION

3.4.1 Introduction
3.4.2 Workflows
3.4.3 Visualization & Volume Interpretation
3.4.4 Pitfalls
3.4.5 References

3.5 - FLATSPOT ENHANCEMENT

3.5.1 Introduction
3.5.2 Spatial Stacking
3.5.3 Optical Stacking
3.5.4 Edge Detection
3.5.4 References

CHAPTER 4 DIRECT HYDROCARBON DETECTION

4.1 - INTRODUCTION & HISTORICAL PERSPECTIVE

4.1.1 Introduction
4.1.2 Historical perspective
4.1.3 References

4.2 - BRIGHT SPOTS 

4.2.1 Synthetic Model
4.2.2 Bonga Case History
4.2.3 False Positives
4.2.4 Conclusions 
4.2.5 References

4.3 - DIM SPOTS 

4.3.1 Synthetic Model
4.3.2 McCulloch Field Case History
4.3.3 Roncador Field Case History
4.3.4 False Positives
4.3.5 Conclusions

4.4 - PHASE REVERSALS

4.4.1 Synthetic Model
4.4.2 Jotun & Heimdal Fields Case History
4.4.3 False Positives
4.4.4 Conclusions 
4.4.5 References

4.5 - AMPLITUDE CONFORMANCE WITH STRUCTURE

4.6 - FLAT SPOTS

4.6.1 Introduction
4.6.2 False Positives

- Low Saturation Gas
- Diagenetic Boundaries
- Channel Bases
- Others

4.6.3 Conclusions 
4.6.4 References

4.7 - AMPLITUDE VERSUS OFFSET

4.7.1 Introduction
4.7.2 Basic Theory
4.7.3 AVO Classes
4.7.4 Partial Stacks
4.7.5 AVO Cross Plotting
4.7.6 Single Interface Modelling
4.7.7 Conclusions
4.7.8 References

CHAPTER 5 - VOLUMETRIC ASSESSMENT

5.1: Introduction
5.2: Reservoir Envelope GRV
5.3: Depositional Elements GRV
5.4: Seismic derived Net Pay using AI
5.5: Seismic derived Net Pay using seismic attributes
5.6: Incremental Pay Thickness
5.7: Voxel Summation
5.8: Conclusions
5.9: References

CHAPTER 6 - DFI RISK MODIFICATION

6.1: Introduction
6.2: In Principle
6.3: In Practice
6.4: References