Sequence Stratigraphy of Clastic Reservoirs
Who Should Attend:
The material of this course should be of interest to exploration and development geologists, reservoir geologists, reservoir engineers, petrophysicists, log analysts, geophysicists and managers of all these disciplines.
The course provides attendees with knowledge and a thorough coverage of the basic and advanced principles, practices and applications of Clastic Sequence Stratigraphy. The lectures and practicals covered in this course should help earth scientists of all branches develop more sound models for the prediction of the presence, architecture, continuity and trend of the reservoir, and help managers make educated decisions when faced with proposals from their development and exploration geologists concerning such reservoir aspects. Similar knowledge is gained concerning source and seal rocks through principles discussed in the class. By the conclusion of the course it is expected that all participants should:
- At least have acquired working knowledge of basic principles and practices of clastic sequence stratigraphy.
- With individual wireline logs, and with help from sedimentological core descriptions, recognize facies tracts, parasequences and their stacking patterns.
- Correlate stratigraphic cross sections based on sound sequence stratigraphic practice. This in addition to utilizing sedimentological core descriptions, you should be able to recognize sequence boundaries, flooding surfaces and the various systems tracts. When correlating these entities from well to well a clear logical picture should emerge concerning the depositional history of the area concerned.
- Be able to breakdown a complex stratigraphy into its genetically packaged units. The sequences.
- Map the spatial distribution of the genetic units and understand their temporal succession.
- Predict distribution of source, seal and reservoir rocks from above maps.
- Understand the architecture and plumbing of the reservoir rocks from following sound concepts of sequence stratigraphy.
Basic Concepts & Controls
- Controls on Sedimentary Depositional Systems
- Accommodation Space
- Sediment Supply
- Sea-Level Change
- Transgression & Regressions
- Transgression & Ravinement
- Concept of Shoreline Trajectory
The Shallow Marine Depositional System
- Overview of Marine Depositional Systems
- Parasequences in the Shallow Marine Realm
- Parasequence Sets, Stacking Patterns and their Significance
Sequences: The Basic Model
- Lowstand Systems Tract
- Transgressive Systems Tract
- Highstand Systems Tract
- Falling Stage Systems Tract/Forced Regressive Systems Tract
Marine Sequence Stratigraphy: Advanced Concepts
- Modifications to the basic model
- Use of Biostratigraphy in sequence stratigraphy
- Glacial sequence stratigraphy
Driving Mechanisms, Sequence Hierarchy And Alternative Sequence Models
- Driving mechanisms for sea level changes
- Sequence hierarchy
- Alternative sequence stratigraphic models
The Non-Marine Depositional Systems
- River types and their deposits
- Floodplains and importance of soils
- Alluvial fans and playas
- Lacustrine systems
- Aeolian systems
Sequence Stratigraphy Of Marginal And Non-Marine Systems
- Base level and fluvial response to base level change
- Sequence boundaries and systems tracts in the non-marine
- Channel geometries and connectivity
- Parasequences in the non-marine
Sequence Stratigraphy In Tectonically Active Basins
- Foreland basins
- Extensional basins
- Growth faulted basins
Sequence Stratigraphy & Reservoir Modelling
Course Summary & Discussions
- Class meetings will consist of lecture style coverage of the basic principles and practices of the subject. This is followed by practicals consisting of correlation problem solving that require an adequate understanding of the principles covered in each of the subjects.
- The course manual contains the following:
- All necessary text and graphics to clearly cover all concepts and items seen in table of contents below.
- Most of the projected material in the course is duplicated in the manual for ease of note taking.
- Sets of material for use in exercises that follow major sections covered in the classroom.
- Photocopies of key published papers and a thorough list of literature on the subjects covered and key reading material.